1970 Pacific typhoon season
Encyclopedia
The 1970 Pacific typhoon season has no official bounds; it ran year-round in 1970, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
or PAGASA. This can often result in the same storm having two names.
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
which devastated Bangladesh
.
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
. The first storm of 1970 was named Nancy and the final one was named Ruth.
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The 1970 Pacific typhoon season has no official bounds; it ran year-round in 1970, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
or PAGASA. This can often result in the same storm having two names.
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
which devastated Bangladesh
.
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
. The first storm of 1970 was named Nancy and the final one was named Ruth.
{|width="90%"
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The 1970 Pacific typhoon season has no official bounds; it ran year-round in 1970, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
or PAGASA. This can often result in the same storm having two names.
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
which devastated Bangladesh
.
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
. The first storm of 1970 was named Nancy and the final one was named Ruth.
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The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
International Date Line
The International Date Line is a generally north-south imaginary line on the surface of the Earth, passing through the middle of the Pacific Ocean, that designates the place where each calendar day begins...
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
1970 Pacific hurricane season
The 1970 Pacific hurricane season began on May 15, 1970 in the east Pacific, and on June 1, 1970 in the central Pacific. It ended on November 30, 1970. These dates conventionally delimit the period of time when tropical cyclones form in the eastern Pacific Ocean.This season had an above average...
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
Joint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
Philippine Atmospheric, Geophysical and Astronomical Services Administration
The Philippine Atmospheric, Geophysical and Astronomical Services Administration is a Philippine national institution dedicated to provide flood and typhoon warnings, public weather forecasts and advisories, meteorological, astronomical, climatological, and other specialized information and...
or PAGASA. This can often result in the same storm having two names.
Storms
27 tropical depressions formed this year in the Western Pacific, of which 24 became tropical storms. 12 storms reached typhoon intensity, of which 7 reached super typhoon strength.Super Typhoon Olga
Super Typhoon Olga, the first super typhoon of the season, moved northeastward after its peak of 160 mph on July 1. Dry air approached the system as it neared Japan, and Olga struck the country on the 5th as a 60 mph tropical storm. Olga brought heavy rains and mudslides to the area, causing 8 deaths in Japan, 29 casualties in South Korea, and $10 million in damage (1970 USD).Typhoon Wilda (Iliang)
A broad surface trough developed into Tropical Storm Wilda on August 9. After drifting to the west-southwest, it turned to the north, where it reached a peak of 120 mph winds on the 12th near Okinawa. Wilda continued northward, and weakened slightly to a 105 mph typhoon before making landfall on western KyūshūKyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
Super Typhoon Anita
An upper level low contributed to the formation of Tropical Depression 11W on August 16 over the northern Marianas Islands. It quickly intensified, reaching typhoon status that night. Anita's intensification rate slowed initially, but as it continued northwestward late on the 18th and 19th, Anita rapidly strengthened to a 155 mph super typhoon. It weakened as it accelerated to the north-northwest, and hit western ShikokuShikoku
is the smallest and least populous of the four main islands of Japan, located south of Honshū and east of the island of Kyūshū. Its ancient names include Iyo-no-futana-shima , Iyo-shima , and Futana-shima...
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
Typhoon Clara
Tropical Storm Clara developed on August 26 southeast of Japan from an upper tropospheric circulation that separated from the Mid-Pacific trough. It quickly strengthened, and became a typhoon on the 27th at 31.9º North, one of only 16 Western Pacific typhoons to reach that strength north of 30ºN. Clara peaked at 95 mph before coming close to Japan, when a shortwave trough forced it sharply eastward. The storm maintained its intensity until becoming extratropical on September 3. An interesting fact about Clara was a reconnaissance mission flown into Hurricane Dot in the central Pacific also flew into Clara on the same flight, an unusual accomplishment not normally seen.Super Typhoon Georgia (Pitang)
On September 11, Super Typhoon Georgia, which formed on the 7th, struck northern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
Super Typhoon Joan (Sening)
A tropical disturbance organized into Tropical Storm Joan on October 9, east of the Philippines. Conditions favored strengthening, and Joan reached typhoon status on the 11th. From late on the 11th to early on the 13th, Typhoon Joan rapidly intensified to a 175 mph Super Typhoon. It struck the southeastern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
Super Typhoon Kate (Titang)
Tropical Storm Kate developed just behind Typhoon Joan, east of the southern PhilippinesPhilippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
Tropical Storm Nora
The remnants of Tropical Storm Nora helped in the formation of the 1970 Bhola cyclone1970 Bhola cyclone
The 1970 Bhola cyclone was a devastating tropical cyclone that struck East Pakistan and India's West Bengal on November 12, 1970. It was the deadliest tropical cyclone ever recorded, and one of the deadliest natural disasters in modern times...
which devastated Bangladesh
Bangladesh
Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...
.
Super Typhoon Patsy (Yoling)
A tropical disturbance organized into Tropical Depression 27W on November 14 near the Marianas Islands. A strong ridge to its north forced it westward, where it strengthened to tropical storm status later on the 14th. Patsy steadily intensified, reaching typhoon strength on the 16th and peaking at 155 mph on the 18th. Its inflow became disrupted by the Philippines to its west, and Patsy hit LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
1970 storm names
Western North Pacific tropical cyclones were named by the Joint Typhoon Warning CenterJoint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. The first storm of 1970 was named Nancy and the final one was named Ruth.
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The 1970 Pacific typhoon season has no official bounds; it ran year-round in 1970, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
International Date Line
The International Date Line is a generally north-south imaginary line on the surface of the Earth, passing through the middle of the Pacific Ocean, that designates the place where each calendar day begins...
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
1970 Pacific hurricane season
The 1970 Pacific hurricane season began on May 15, 1970 in the east Pacific, and on June 1, 1970 in the central Pacific. It ended on November 30, 1970. These dates conventionally delimit the period of time when tropical cyclones form in the eastern Pacific Ocean.This season had an above average...
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
Joint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
Philippine Atmospheric, Geophysical and Astronomical Services Administration
The Philippine Atmospheric, Geophysical and Astronomical Services Administration is a Philippine national institution dedicated to provide flood and typhoon warnings, public weather forecasts and advisories, meteorological, astronomical, climatological, and other specialized information and...
or PAGASA. This can often result in the same storm having two names.
Storms
27 tropical depressions formed this year in the Western Pacific, of which 24 became tropical storms. 12 storms reached typhoon intensity, of which 7 reached super typhoon strength.Super Typhoon Olga
Super Typhoon Olga, the first super typhoon of the season, moved northeastward after its peak of 160 mph on July 1. Dry air approached the system as it neared Japan, and Olga struck the country on the 5th as a 60 mph tropical storm. Olga brought heavy rains and mudslides to the area, causing 8 deaths in Japan, 29 casualties in South Korea, and $10 million in damage (1970 USD).Typhoon Wilda (Iliang)
A broad surface trough developed into Tropical Storm Wilda on August 9. After drifting to the west-southwest, it turned to the north, where it reached a peak of 120 mph winds on the 12th near Okinawa. Wilda continued northward, and weakened slightly to a 105 mph typhoon before making landfall on western KyūshūKyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
Super Typhoon Anita
An upper level low contributed to the formation of Tropical Depression 11W on August 16 over the northern Marianas Islands. It quickly intensified, reaching typhoon status that night. Anita's intensification rate slowed initially, but as it continued northwestward late on the 18th and 19th, Anita rapidly strengthened to a 155 mph super typhoon. It weakened as it accelerated to the north-northwest, and hit western ShikokuShikoku
is the smallest and least populous of the four main islands of Japan, located south of Honshū and east of the island of Kyūshū. Its ancient names include Iyo-no-futana-shima , Iyo-shima , and Futana-shima...
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
Typhoon Clara
Tropical Storm Clara developed on August 26 southeast of Japan from an upper tropospheric circulation that separated from the Mid-Pacific trough. It quickly strengthened, and became a typhoon on the 27th at 31.9º North, one of only 16 Western Pacific typhoons to reach that strength north of 30ºN. Clara peaked at 95 mph before coming close to Japan, when a shortwave trough forced it sharply eastward. The storm maintained its intensity until becoming extratropical on September 3. An interesting fact about Clara was a reconnaissance mission flown into Hurricane Dot in the central Pacific also flew into Clara on the same flight, an unusual accomplishment not normally seen.Super Typhoon Georgia (Pitang)
On September 11, Super Typhoon Georgia, which formed on the 7th, struck northern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
Super Typhoon Joan (Sening)
A tropical disturbance organized into Tropical Storm Joan on October 9, east of the Philippines. Conditions favored strengthening, and Joan reached typhoon status on the 11th. From late on the 11th to early on the 13th, Typhoon Joan rapidly intensified to a 175 mph Super Typhoon. It struck the southeastern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
Super Typhoon Kate (Titang)
Tropical Storm Kate developed just behind Typhoon Joan, east of the southern PhilippinesPhilippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
Tropical Storm Nora
The remnants of Tropical Storm Nora helped in the formation of the 1970 Bhola cyclone1970 Bhola cyclone
The 1970 Bhola cyclone was a devastating tropical cyclone that struck East Pakistan and India's West Bengal on November 12, 1970. It was the deadliest tropical cyclone ever recorded, and one of the deadliest natural disasters in modern times...
which devastated Bangladesh
Bangladesh
Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...
.
Super Typhoon Patsy (Yoling)
A tropical disturbance organized into Tropical Depression 27W on November 14 near the Marianas Islands. A strong ridge to its north forced it westward, where it strengthened to tropical storm status later on the 14th. Patsy steadily intensified, reaching typhoon strength on the 16th and peaking at 155 mph on the 18th. Its inflow became disrupted by the Philippines to its west, and Patsy hit LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
1970 storm names
Western North Pacific tropical cyclones were named by the Joint Typhoon Warning CenterJoint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. The first storm of 1970 was named Nancy and the final one was named Ruth.
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The 1970 Pacific typhoon season has no official bounds; it ran year-round in 1970, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The scope of this article is limited to the Pacific Ocean, north of the equator and west of the international date line
International Date Line
The International Date Line is a generally north-south imaginary line on the surface of the Earth, passing through the middle of the Pacific Ocean, that designates the place where each calendar day begins...
. Storms that form east of the date line and north of the equator are called hurricanes; see 1970 Pacific hurricane season
1970 Pacific hurricane season
The 1970 Pacific hurricane season began on May 15, 1970 in the east Pacific, and on June 1, 1970 in the central Pacific. It ended on November 30, 1970. These dates conventionally delimit the period of time when tropical cyclones form in the eastern Pacific Ocean.This season had an above average...
. Tropical Storms formed in the entire west Pacific basin were assigned a name by the Joint Typhoon Warning Center
Joint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration
Philippine Atmospheric, Geophysical and Astronomical Services Administration
The Philippine Atmospheric, Geophysical and Astronomical Services Administration is a Philippine national institution dedicated to provide flood and typhoon warnings, public weather forecasts and advisories, meteorological, astronomical, climatological, and other specialized information and...
or PAGASA. This can often result in the same storm having two names.
Storms
27 tropical depressions formed this year in the Western Pacific, of which 24 became tropical storms. 12 storms reached typhoon intensity, of which 7 reached super typhoon strength.Super Typhoon Olga
Super Typhoon Olga, the first super typhoon of the season, moved northeastward after its peak of 160 mph on July 1. Dry air approached the system as it neared Japan, and Olga struck the country on the 5th as a 60 mph tropical storm. Olga brought heavy rains and mudslides to the area, causing 8 deaths in Japan, 29 casualties in South Korea, and $10 million in damage (1970 USD).Typhoon Wilda (Iliang)
A broad surface trough developed into Tropical Storm Wilda on August 9. After drifting to the west-southwest, it turned to the north, where it reached a peak of 120 mph winds on the 12th near Okinawa. Wilda continued northward, and weakened slightly to a 105 mph typhoon before making landfall on western KyūshūKyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....
on the 14th. Wilda accelerated to the northeast, and became extratropical on the 15th. The typhoon caused heavy rain, killing 11 people.
Super Typhoon Anita
An upper level low contributed to the formation of Tropical Depression 11W on August 16 over the northern Marianas Islands. It quickly intensified, reaching typhoon status that night. Anita's intensification rate slowed initially, but as it continued northwestward late on the 18th and 19th, Anita rapidly strengthened to a 155 mph super typhoon. It weakened as it accelerated to the north-northwest, and hit western ShikokuShikoku
is the smallest and least populous of the four main islands of Japan, located south of Honshū and east of the island of Kyūshū. Its ancient names include Iyo-no-futana-shima , Iyo-shima , and Futana-shima...
in Japan on the 21st as a 115 mph typhoon. Anita, which became extratropical on the 22nd, caused 23 deaths and sank 31 vessels.
Typhoon Clara
Tropical Storm Clara developed on August 26 southeast of Japan from an upper tropospheric circulation that separated from the Mid-Pacific trough. It quickly strengthened, and became a typhoon on the 27th at 31.9º North, one of only 16 Western Pacific typhoons to reach that strength north of 30ºN. Clara peaked at 95 mph before coming close to Japan, when a shortwave trough forced it sharply eastward. The storm maintained its intensity until becoming extratropical on September 3. An interesting fact about Clara was a reconnaissance mission flown into Hurricane Dot in the central Pacific also flew into Clara on the same flight, an unusual accomplishment not normally seen.Super Typhoon Georgia (Pitang)
On September 11, Super Typhoon Georgia, which formed on the 7th, struck northern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
with winds of 160 mph. It weakened over the island, turned to the northwest, and hit southern China as a strong tropical storm on the 13th. Georgia produced little rain over the Philippines, but its strong winds caused 95 casualties (with 80 missing) and damage at $1.4 million (1970 USD).
Super Typhoon Joan (Sening)
A tropical disturbance organized into Tropical Storm Joan on October 9, east of the Philippines. Conditions favored strengthening, and Joan reached typhoon status on the 11th. From late on the 11th to early on the 13th, Typhoon Joan rapidly intensified to a 175 mph Super Typhoon. It struck the southeastern LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
at that intensity on the 13th, and crossed the archipelago. After weakening to a minimal typhoon, Joan turned to the northwest, where it reintensified to a 115 mph typhoon. It made landfall on eastern Hainan Island on the 16th, and dissipated on the 18th over China. Joan left 575 people dead (with 193 missing), and caused $74 million in damage (1970 USD), mostly from agricultural losses.
Super Typhoon Kate (Titang)
Tropical Storm Kate developed just behind Typhoon Joan, east of the southern PhilippinesPhilippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
on October 14. It tracked westward as a small cyclone, and strengthened into a typhoon on the 15th. It made landfall twice, once in the Philippines and once in Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
, resulting in at least 631 fatalities (with 284 missing) and $50 million in damage.
Tropical Storm Nora
The remnants of Tropical Storm Nora helped in the formation of the 1970 Bhola cyclone1970 Bhola cyclone
The 1970 Bhola cyclone was a devastating tropical cyclone that struck East Pakistan and India's West Bengal on November 12, 1970. It was the deadliest tropical cyclone ever recorded, and one of the deadliest natural disasters in modern times...
which devastated Bangladesh
Bangladesh
Bangladesh , officially the People's Republic of Bangladesh is a sovereign state located in South Asia. It is bordered by India on all sides except for a small border with Burma to the far southeast and by the Bay of Bengal to the south...
.
Super Typhoon Patsy (Yoling)
A tropical disturbance organized into Tropical Depression 27W on November 14 near the Marianas Islands. A strong ridge to its north forced it westward, where it strengthened to tropical storm status later on the 14th. Patsy steadily intensified, reaching typhoon strength on the 16th and peaking at 155 mph on the 18th. Its inflow became disrupted by the Philippines to its west, and Patsy hit LuzonLuzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
on the 19th with winds of 130 mph, making it the 3rd strong typhoon since September to strike the island. After crossing the island, Patsy traversed the South China Sea, where cooler waters kept the system a tropical storm. On November 22, Patsy struck Vietnam, and dissipated soon after. Typhoon Patsy was one of the deadliest typhoons to strike the Philippines in its history. 106 people were killed (with 351 missing) on the island, and 135 people were killed at sea due to shipping failures. Because the Vietnam War
Vietnam War
The Vietnam War was a Cold War-era military conflict that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of...
was raging at that time, its difficult to say about the damage or death toll, but estimates say that 30 people died in Vietnam.
1970 storm names
Western North Pacific tropical cyclones were named by the Joint Typhoon Warning CenterJoint Typhoon Warning Center
The Joint Typhoon Warning Center is a joint United States Navy – United States Air Force task force located at the Naval Maritime Forecast Center in Pearl Harbor, Hawaii...
. The first storm of 1970 was named Nancy and the final one was named Ruth.
{|width="90%"
|
- AgnesBonnieCarmenDellaElaineFayeGloriaHesterIrmaJudyKitLolaMamieNinaOraPhyllisRitaSusanTessViolaWinnie
|- AliceBettyCoraDorisElsieFlossieGraceHelenIdaJuneKathyLornaMarie
- Nancy 1W
- Olga 2W
- Pamela 3W
- Ruby 4W
- Sally 5W
- Therese 8W
- Violet 9W
- Wilda 10W
|- Anita 11W
- Billie 12W
- Clara 13W
- Dot 14C
- Ellen 15W
- Fran 16W
- Georgia 17W
- Hope 18W
- Iris 19W
- Joan 21WTyphoon Joan (1970)Super Typhoon Joan was the first of two super typhoons to strike the Philippines within a week in October 1970, the second being Super Typhoon Kate...
- Kate 22WTyphoon Kate (1970)Super Typhoon Kate was the second of two super typhoons to strike the Philippines within a week in October 1970, the first being Super Typhoon Joan. As a result, Kate produced heavy damage and over 631 casualties...
- Louise 23W
- Marge 24W
- Nora 25W
- Opal 26W
- Patsy 27WTyphoon Patsy (1970)Super Typhoon Patsy was the twenty-seventh named storm, twelfth typhoon, and seventh super typhoon of the 1970 Pacific typhoon season....
- Ruth 28W
- SarahThelmaVeraWanda
|- AmyBabeCarlaDinahEmmaFredaGildaHarrietIvyJeanKimLucyMaryNadineOlivePollyRoseShirleyTrixVirginiaWendy
|}
One Central Pacific System developed, Hurricane Dot. The policy at that time was to use Western Pacific Names for the Central Pacific.
External links
- Japan Meteorological Agency
- Joint Typhoon Warning Center.
- China Meteorological Agency
- National Weather Service Guam
- Hong Kong Observatory
- Macau Meteorological Geophysical Services
- Korea Meteorological Agency
- Philippine Atmospheric, Geophysical and Astronomical Services Administration
- Taiwan Central Weather Bureau
- Digital Typhoon - Typhoon Images and Information
- Typhoon2000 Philippine typhoon website
