The following days had a declaration of a High Risk of severe weather in a certain part of the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 according to the Storm Prediction Center

Storm Prediction Center

The Storm Prediction Center , located in Norman, Oklahoma, is tasked with forecasting the risk of severe thunderstorms and tornadoes in the contiguous United States. The agency issues convective outlooks, mesoscale discussions, and watches as a part of this process...

 (and its predecessor, the National Severe Storms Forecast Center).

Such indicates a forecast of an extreme severe weather event (in most cases, a major tornado outbreak). There are 88 known days since 1984 that such a declaration was issued. Busts indicate days that a severe weather outbreak was expected but never materialized, with little or no significant severe weather activity, or materialized well outside of the forecasted area. Limited details are available for days before the late 1990s, and it is probable that there were additional High Risk days with no online documentation, especially in the 1980s.

The only month that has not recorded a known High Risk day is September. No High Risk has ever been issued west of the Great Plains

Great Plains

The Great Plains are a broad expanse of flat land, much of it covered in prairie, steppe and grassland, which lies west of the Mississippi River and east of the Rocky Mountains in the United States and Canada. This area covers parts of the U.S...

.

Date	Area	Results	Notes
March 28, 1984	Carolinas	Tornado outbreak produced ≥24 tornadoes; killed 57
May 7, 1988	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Busted; few severe reports
November 15, 1989	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak produced 18 tornadoes; killed 21
March 13, 1990	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	Tornado outbreak produced 56 tornadoes; killed 2	Unconfirmed risk level
May 15, 1990	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Small tornado event produced 19 tornadoes; killed 1
June 2, 1990	Ohio Valley	Tornado outbreak produced 88 tornadoes; killed 9
April 11, 1991	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Busted; few severe reports
April 12, 1991	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Moderate tornado/hail event	First known back-to-back High Risk days
April 26, 1991	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Tornado outbreak Andover, Kansas Tornado Outbreak The 1991 Andover, Kansas tornado outbreak was a violent outbreak of 55 tornadoes which took place on April 26, 1991, killing 24 people and injuring hundreds more. The Andover outbreak was featured in two different documentaries: the first one was Enemy Wind, a documentary produced by The Weather...  produced 58 tornadoes; killed 24
April 28, 1991	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Busted; only a few tornadoes and severe reports
June 16, 1992	Midwest	Second day of a three-day tornado outbreak Mid-June 1992 Tornado Outbreak The Mid-June 1992 tornado outbreak was a one of the largest tornado outbreaks on record, affecting portions of the Central United States from June 14 to June 18, 1992. The outbreak began on June 14 when six tornadoes touched down in Colorado and Idaho...  produced 65 tornadoes; killed 1
June 17, 1992	Great Lakes Great Lakes The Great Lakes are a collection of freshwater lakes located in northeastern North America, on the Canada – United States border. Consisting of Lakes Superior, Michigan, Huron, Erie, and Ontario, they form the largest group of freshwater lakes on Earth by total surface, coming in second by volume...  region	Third day of a three-day tornado outbreak Mid-June 1992 Tornado Outbreak The Mid-June 1992 tornado outbreak was a one of the largest tornado outbreaks on record, affecting portions of the Central United States from June 14 to June 18, 1992. The outbreak began on June 14 when six tornadoes touched down in Colorado and Idaho...  produced 29 tornadoes and a large serial derecho; no deaths
June 7, 1993	Upper Midwest Upper Midwest The Upper Midwest is a region in the northern portion of the U.S. Census Bureau's Midwestern United States. It is largely a sub-region of the midwest. Although there are no uniformly agreed-upon boundaries, the region is most commonly used to refer to the states of Minnesota, Wisconsin, and...	Tornado outbreak produced 41 tornadoes; no deaths
March 27, 1994	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak produced 26 tornadoes; killed 42
April 25, 1994	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	End of tornado outbreak sequence that produced 29 tornadoes and many hail reports; killed 3
August 27, 1994	Upper Midwest Upper Midwest The Upper Midwest is a region in the northern portion of the U.S. Census Bureau's Midwestern United States. It is largely a sub-region of the midwest. Although there are no uniformly agreed-upon boundaries, the region is most commonly used to refer to the states of Minnesota, Wisconsin, and...	Small tornado outbreak produced 12 tornadoes; killed 4	Only High Risk ever issued in August
November 27, 1994	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak produced 19 tornadoes; killed 6
April 17, 1995	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Primarily a derecho Derecho A derecho is a widespread and long-lived, violent convectively induced straight-line windstorm that is associated with a fast-moving band of severe thunderstorms in the form of a squall line usually taking the form of a bow echo... ; but 21 tornadoes (mostly weak) reported
May 7, 1995	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	First part of a tornado outbreak sequence May 1995 Tornado Outbreak Sequence The May 1995 Tornado Outbreak Sequence is a series of tornado outbreaks that occurred from May 6 through May 27, 1995. Eleven deaths occurred due to the outbreak. Nearly 300 tornadoes occurred during this period from the Central US through the Southeast and into the Mid-Atlantic...  that produced 32 tornadoes; killed 3
May 12, 1995	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Second part of the same tornado outbreak sequence May 1995 Tornado Outbreak Sequence The May 1995 Tornado Outbreak Sequence is a series of tornado outbreaks that occurred from May 6 through May 27, 1995. Eleven deaths occurred due to the outbreak. Nearly 300 tornadoes occurred during this period from the Central US through the Southeast and into the Mid-Atlantic...  that produced 13 tornadoes; although mostly a bust
May 13, 1995	Ohio Valley	Continuation of the same tornado outbreak sequence May 1995 Tornado Outbreak Sequence The May 1995 Tornado Outbreak Sequence is a series of tornado outbreaks that occurred from May 6 through May 27, 1995. Eleven deaths occurred due to the outbreak. Nearly 300 tornadoes occurred during this period from the Central US through the Southeast and into the Mid-Atlantic...  that produced 27 tornadoes and a long derecho; killed 3
May 17, 1995	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Continuation of the same tornado outbreak sequence May 1995 Tornado Outbreak Sequence The May 1995 Tornado Outbreak Sequence is a series of tornado outbreaks that occurred from May 6 through May 27, 1995. Eleven deaths occurred due to the outbreak. Nearly 300 tornadoes occurred during this period from the Central US through the Southeast and into the Mid-Atlantic...  although again mostly a bust; only 8 tornadoes and few other reports
April 19, 1996	Illinois Illinois Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,... , Indiana Indiana Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...	Tornado outbreak April 1996 Tornado Outbreak Sequence The April 1996 Tornado Outbreak Sequence was a series of tornado outbreaks that occurred over a three-day period between April 19 to April 21, 1996 across a large area of eastern North America. It was the most notable outbreak of the year; the 19th was the most prolific tornado outbreak in Illinois...  produced 74 tornadoes (plus more the next day); killed 1
May 26, 1996	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Small tornado event became a mini-derecho
May 2, 1997	Mississippi Mississippi Mississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi... , Alabama Alabama Alabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...	Progressive derecho that also produced 8 tornadoes; killed 1
July 1, 1997	Upper Mississippi Valley	Moderate tornado outbreak reorganized into a progressive derecho
February 10, 1998	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in... , Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...	Rare winter serial derecho
April 8, 1998	Alabama Alabama Alabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...	Tornado outbreak Birmingham Tornado of April 1998 The Birmingham Tornado was a tornadic event that occurred on April 8, 1998 striking the western part of Jefferson County, Alabama, near Birmingham, and continuing into neighboring St. Clair County. It was part of a larger outbreak that started on April 6 across the Great Plains and ended on April 9...  produced 15 tornadoes (mostly in more urbanized areas) plus widespread wind and hail; killed 41
April 15, 1998	Middle Mississippi Valley	First day of a two-day tornado outbreak that produced 23 tornadoes; killed 4
April 16, 1998	Tennessee Tennessee Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...	Second day of a two-day tornado outbreak that produced 38 tornadoes including the Nashville tornado; killed 8
May 31, 1998	Northeastern U.S. Northeastern United States The Northeastern United States is a region of the United States as defined by the United States Census Bureau.-Composition:The region comprises nine states: the New England states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and Vermont; and the Mid-Atlantic states of New...	Major derecho and tornado outbreak produced 39 tornadoes and enormous wind damage; killed 7	Only High Risk ever issued in the Northeast
June 14, 1998	Ohio Valley	Small tornado event produced 22 mostly weak tornadoes followed by a progressive derecho
January 21, 1999	Arkansas Arkansas Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...	Tornado outbreak January 1999 tornado outbreak sequence The January 1999 tornado outbreak sequence was a major outbreak of tornadoes from January 17 to 22 1999 across the Mississippi Valley, USA, centered in Arkansas and Tennessee. It was by far the largest tornado outbreak ever recorded in the month of January with 150 tornadoes confirmed...  produced 99 tornadoes; killed 9	Only High Risk ever issued in January
March 8, 1999	Arkansas Arkansas Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River... , Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...	Busted; few tornadoes with some scattered hail and wind
April 8, 1999	Iowa Iowa Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New... , Missouri Missouri Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It... , Illinois Illinois Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...	Tornado outbreak produced 56 tornadoes; killed 6
May 3, 1999	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Tornado outbreak produced 61 tornadoes; killed 48
May 4, 1999	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Arkansas Arkansas Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Second day of the same tornado outbreak produced 39 tornadoes; killed 1
May 5, 1999	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Third day of the same tornado outbreak produced 18 tornadoes plus a significant serial derecho; killed 3	First and only occurrence of three consecutive High Risk days
June 5, 1999	South Dakota South Dakota South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. Once a part of Dakota Territory, South Dakota became a state on November 2, 1889. The state has an area of and an estimated population of just over... , Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....	Busted; isolated tornadoes and scattered wind and hail damage	A shortwave Shortwave (meteorology) A shortwave or shortwave trough is an embedded kink in the trough / ridge pattern. This is the opposite of longwaves, which are responsible for synoptic scale systems, although shortwaves may be contained within or found ahead of longwaves and range from the mesocale to the synoptic scale...  ridge Ridge (meteorology) A ridge is an elongated region of relatively high atmospheric pressure, the opposite of a trough....  maintained a capping inversion Capping inversion A capping inversion is an elevated inversion layer that caps a convective boundary layer.The boundary layer is the part of the atmosphere which is closest to the ground. Normally, the sun heats the ground, which in turn heats the air just above it. Thermals form when this warm air rises into the... .
April 6, 2001	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Serial derecho with widespread wind damage
April 11, 2001	Iowa Iowa Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New... , Illinois Illinois Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,... , Wisconsin Wisconsin Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...	Tornado outbreak April 10-11, 2001 tornado outbreak The April 10–11, 2001 tornado outbreak was a large tornado outbreak which affected the central Great Plains on April 10–11, 2001. During the two-day outbreak, it produced a total of 79 tornadoes across eight states including Kansas, Missouri, Oklahoma, Texas, Nebraska, Iowa, Illinois and Michigan....  produced 40 tornadoes; killed 2
June 11, 2001	Minnesota Minnesota Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state... , Wisconsin Wisconsin Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...	Progressive derecho with widespread wind damage. Unofficial thunderstorm wind gust of 119 miles per hour (192 km/h) near Atwater, Minnesota Atwater, Minnesota As of the census of 2000, there were 1,079 people, 461 households, and 296 families residing in the city. The population density was 1,053.3 people per square mile . There were 475 housing units at an average density of 463.7 per square mile... .
October 13, 2001	U.S. Gulf Coast	Tornado outbreak produced 31 tornadoes
October 24, 2001	Midwest Midwestern United States The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....	Tornado outbreak produced 25 tornadoes plus a major serial derecho; killed 2
April 16, 2002	Upper Midwest Upper Midwest The Upper Midwest is a region in the northern portion of the U.S. Census Bureau's Midwestern United States. It is largely a sub-region of the midwest. Although there are no uniformly agreed-upon boundaries, the region is most commonly used to refer to the states of Minnesota, Wisconsin, and...	Busted; isolated wind damage and tornadoes
July 31, 2002	Minnesota Minnesota Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state... , Wisconsin Wisconsin Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...	Busted; isolated wind damage
November 10, 2002	Midwest Midwestern United States The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....  and Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak Veterans Day Weekend Outbreak The 2002 Veterans Day Weekend tornado outbreak was a large, widespread and rare outbreak of storms that occurred from the late afternoon hours on November 9 through the early morning hours on Veterans Day, November 11, 2002. Eighty-three tornadoes hit 17 states. Twelve tornadoes killed 36 people in...  produced 76 tornadoes and extensive wind damage; killed 36
December 23, 2002	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in... , Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...	Busted; tornado event produced 15 weak tornadoes	Only High Risk ever issued in December
April 6, 2003	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in... , Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties... , Mississippi Mississippi Mississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi...	Localized tornado event produced 23 tornadoes
May 4, 2003	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	Day 5 of a tornado outbreak sequence May 2003 tornado outbreak sequence The May 2003 tornado outbreak sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003. Tornadoes began occurring over the affected area on April 30, but the most prolific continuous period was the seven day period of May 4–10...  produced 86 tornadoes; killed 38
May 5, 2003	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Day 6 of a tornado outbreak sequence May 2003 tornado outbreak sequence The May 2003 tornado outbreak sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003. Tornadoes began occurring over the affected area on April 30, but the most prolific continuous period was the seven day period of May 4–10...  produced 22 tornadoes but no deaths
May 8, 2003	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Day 9 of a tornado outbreak sequence May 2003 tornado outbreak sequence The May 2003 tornado outbreak sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003. Tornadoes began occurring over the affected area on April 30, but the most prolific continuous period was the seven day period of May 4–10...  produced 42 tornadoes but no deaths
May 10, 2003	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	Day 11 of a tornado outbreak sequence May 2003 tornado outbreak sequence The May 2003 tornado outbreak sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003. Tornadoes began occurring over the affected area on April 30, but the most prolific continuous period was the seven day period of May 4–10...  produced 60 tornadoes but no deaths
May 15, 2003	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Tornado outbreak produced 49 tornadoes
March 4, 2004	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in... , Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Busted; isolated tornadoes outside the risk area reorganized into a large serial derecho
May 22, 2004	Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... , Iowa Iowa Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...	Tornado outbreak produced 68 tornadoes; killed 1
May 24, 2004	Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... , Iowa Iowa Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...	Hybrid derecho/tornado outbreak produced 54 tornadoes; killed 1
May 29, 2004	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	First day of a two-day tornado outbreak produced 80 tornadoes; killed 3
May 30, 2004	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	Second day of a two-day tornado outbreak produced 86 tornadoes; killed 2	Largest High Risk area ever issued
April 11, 2005	Louisiana Louisiana Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties... , Mississippi Mississippi Mississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi...	Busted; only isolated wind damage which killed 1
June 4, 2005	Central U.S. Central United States The Central United States is sometimes conceived as between the Eastern United States and Western United States as part of a three-region model, roughly coincident with the Midwestern United States plus the western and central portions of the Southern United States; the term is also sometimes used...	Tornado outbreak produced 44 tornadoes
November 15, 2005	Midwest Midwestern United States The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....  and Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak Mid-November 2005 Tornado Outbreak The Mid-November 2005 outbreak was an unseasonably strong tornado outbreak on November 15, 2005 in the central United States. It occurred along a cold front separating warm, humid air from the southeast from cold Arctic air to the north and northwest...  produced 50 tornadoes; killed 2
March 12, 2006	Midwest Midwestern United States The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....	Tornado outbreak March 2006 Tornado Outbreak Sequence The March 2006 Tornado Outbreak Sequence was an early season and long lasting tornado outbreak sequence in the central United States that started on the morning of March 9 and continued for over four days until the evening of March 13. The outbreak produced 105 confirmed tornadoes. At least 13...  produced 62 tornadoes; killed 8
April 6, 2006	Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	First day of a three-day tornado outbreak produced 13 tornadoes, but no deaths
April 7, 2006	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Second day of a three-day tornado outbreak produced 49 tornadoes; killed 13	Only High Risk to be issued on Day 2 (the day before the event)
March 1, 2007	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak produced 37 tornadoes; killed 20
April 13, 2007	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Busted; only a few reports of tornadoes and scattered hail damage; killed 1
April 24, 2007	Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Busted; although some tornadoes and wind reports outside the risk area; killed 7
May 5, 2007	Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Second day of a three-day tornado outbreak May 2007 Tornado Outbreak The May 2007 Tornado Outbreak was an extended tornado outbreak that started on May 4, 2007, affecting portions of the Central United States. The most destructive tornado in the outbreak occurred on the evening of May 4 in western Kansas, where about 95% of the city of Greensburg in Kiowa County was...  produced 84 tornadoes; killed 2
June 7, 2007	Upper Midwest Upper Midwest The Upper Midwest is a region in the northern portion of the U.S. Census Bureau's Midwestern United States. It is largely a sub-region of the midwest. Although there are no uniformly agreed-upon boundaries, the region is most commonly used to refer to the states of Minnesota, Wisconsin, and...	Localized tornado event reorganized into a moderate wind event
February 5, 2008	Middle Mississippi Valley	Tornado outbreak 2008 Super Tuesday tornado outbreak The 2008 Super Tuesday tornado outbreak was a deadly tornado outbreak which affected the Southern United States and the lower Ohio Valley on February 5 and 6, 2008. The event began on Super Tuesday, while 24 U.S. states were holding primary elections and caucuses to select the presidential...  produced 87 tornadoes; killed 57
March 15, 2008	Georgia Georgia (U.S. state) Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788... , South Carolina South Carolina South Carolina is a state in the Deep South of the United States that borders Georgia to the south, North Carolina to the north, and the Atlantic Ocean to the east. Originally part of the Province of Carolina, the Province of South Carolina was one of the 13 colonies that declared independence...	Tornado outbreak 2008 Atlanta tornado outbreak The 2008 Atlanta tornado outbreak was a tornado outbreak that affected the Southeastern United States on March 14–15, 2008.A tornado caused widespread damage across downtown Atlanta, including to the CNN Center and to the Georgia Dome, where the 2008 SEC Men's Basketball Tournament was postponed...  produced 44 tornadoes; killed 2
May 22, 2008	Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Day 1 of a tornado outbreak sequence Late-May 2008 tornado outbreak sequence The Late May 2008 tornado outbreak sequence was a series of tornado outbreaks affecting the central plains of the United States since May 22, 2008. Over 250 tornadoes were reported across many states and two Canadian provinces from Wyoming to Ohio and from Manitoba to Texas, of which at least 235...  produced 24 tornadoes; killed 1
May 29, 2008	Nebraska Nebraska Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River.... , Iowa Iowa Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New... , South Dakota South Dakota South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. Once a part of Dakota Territory, South Dakota became a state on November 2, 1889. The state has an area of and an estimated population of just over...	Day 8 of a tornado outbreak sequence Late-May 2008 tornado outbreak sequence The Late May 2008 tornado outbreak sequence was a series of tornado outbreaks affecting the central plains of the United States since May 22, 2008. Over 250 tornadoes were reported across many states and two Canadian provinces from Wyoming to Ohio and from Manitoba to Texas, of which at least 235...  produced 42 tornadoes but no deaths
June 5, 2008	Midwest Midwestern United States The Midwestern United States is one of the four U.S. geographic regions defined by the United States Census Bureau, providing an official definition of the American Midwest....	Day 3 of a tornado outbreak sequence June 2008 tornado outbreak sequence The June 2008 tornado outbreak sequence was a series of tornado outbreaks affecting most of central and eastern North America from June 3–11, 2008. 192 tornadoes were confirmed, along with widespread straight–line wind wind damage. Seven people were killed from a direct result of...  produced 15 tornadoes (and a large serial derecho) but no deaths
April 10, 2009	Alabama Alabama Alabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland... , Georgia Georgia (U.S. state) Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788... , Tennessee Tennessee Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...	Second day of a two-day tornado outbreak April 2009 tornado outbreak -April 9 event:-April 10 event:-Mena tornado:At 7:24 pm CDT on April 9, a tornado warning was issued for areas north of Mena in Polk County, Arkansas and at 8:01 pm CDT the warning extended into Mena. Nine minutes later, a tornado struck the city and killed three people...  produced 59 tornadoes; killed 2
April 26, 2009	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Busted; few tornadoes reported
April 24, 2010	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Tornado outbreak April 2010 tornado outbreak The April 2010 tornado outbreak was a multi-day tornado outbreak across a large portion of the Southern United States, originally starting in the High Plains on April 22, 2010 and continuing through the Southern Plains on April 23, and the Mississippi and Tennessee Valleys on April 24. The most...  produced 39 tornadoes; killed 10
April 30, 2010	Arkansas Arkansas Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...	Second day of a five-day tornado outbreak April–May 2010 tornado outbreak The April-May 2010 tornado outbreak is a multi-day tornado outbreak across a large portion of the Southern United States occurring at the end of April and the beginning of May 2010...  produced 27 tornadoes; killed 1
May 1, 2010	Middle Mississippi Valley	Third day of a five-day tornado outbreak April–May 2010 tornado outbreak The April-May 2010 tornado outbreak is a multi-day tornado outbreak across a large portion of the Southern United States occurring at the end of April and the beginning of May 2010...  produced 35 tornadoes; killed 4	Major flood disaster 2010 Tennessee floods The May 2010 Tennessee floods were 1000-year floods in Middle Tennessee, West Tennessee, south-central and western Kentucky and northern Mississippi as the result of torrential rains on May 1 and 2, 2010...  also occurred from the same storm
May 10, 2010	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...	Tornado outbreak produced 67 tornadoes; killed 3
May 19, 2010	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...	Some tornadoes reported, mostly in open country
October 26, 2010	Ohio Ohio Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus... , Indiana Indiana Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is... , Illinois Illinois Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,... , Michigan Michigan Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....	Tornado outbreak October 2010 North American storm complex The October 2010 North American storm complex was a record non-tropical cyclone event occurring across North America. The massive storm complex caused a wide range of weather events including a major serial derecho stretching from the Gulf Coast to the Great Lakes, a widespread tornado outbreak...  produced 54 tornadoes and a major serial derecho, but no deaths	Event set record for the deepest extratropical low over the continental US
April 16, 2011	North Carolina North Carolina North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte... , Virginia Virginia The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...	Third day of a three-day tornado outbreak April 14–16, 2011 tornado outbreak One of the largest single-system tornado outbreaks in United States history occurred from April 14 to 16, 2011, resulting in 178 confirmed tornadoes across 16 states and severe destruction on all three days of the outbreak. A total of 38 people were killed from tornadoes and an additional five...  produced 52 tornadoes; killed 26
April 26, 2011	South-Central U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Second day of a four-day tornado outbreak April 25–28, 2011 tornado outbreak An extremely large and violent tornado outbreak, the largest tornado outbreak ever recorded, and popularly known as the 2011 Super Outbreak, occurred from April 25 to 28, 2011. The outbreak affected the Southern, Midwestern, and Northeastern United States, leaving catastrophic destruction in...  produced 119 tornadoes; killed 4
April 27, 2011	Southern U.S. Southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive area in the southeastern and south-central United States...	Third and most prolific day of a four-day tornado outbreak April 25–28, 2011 tornado outbreak An extremely large and violent tornado outbreak, the largest tornado outbreak ever recorded, and popularly known as the 2011 Super Outbreak, occurred from April 25 to 28, 2011. The outbreak affected the Southern, Midwestern, and Northeastern United States, leaving catastrophic destruction in...  produced 169 tornadoes; killed 313	Deadliest High Risk day, event set record for most tornadoes in a 24-hour period
May 24, 2011	Oklahoma Oklahoma Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state... , Kansas Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south... , Texas Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...	Fourth day of a multi-day tornado outbreak May 2011 tornado outbreak The May 21–26, 2011 tornado outbreak was a deadly tornado outbreak across the Midwestern and Southern regions of the United States. Most of the tornadoes developed in a corridor from Lake Superior southwest to central Texas; isolated tornadoes occurred in other areas. An especially powerful...  produced 34 tornadoes; killed 17
May 25, 2011	Midwest	Fifth day of a multi-day tornado outbreak May 2011 tornado outbreak The May 21–26, 2011 tornado outbreak was a deadly tornado outbreak across the Midwestern and Southern regions of the United States. Most of the tornadoes developed in a corridor from Lake Superior southwest to central Texas; isolated tornadoes occurred in other areas. An especially powerful... produced 73 tornadoes and a major serial derecho, but no deaths

External links

• High Risk Archive