Timeline of the 2007 North Indian Ocean cyclone season

Below is a timeline of the 2007 North Indian Ocean cyclone season, documenting major events with regards to tropical cyclone

Tropical cyclone

A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...

formation

Tropical cyclogenesis

Tropical cyclogenesis is the term that describes the development and strengthening of a tropical cyclone in the atmosphere. The mechanisms through which tropical cyclogenesis occurs are distinctly different from those through which mid-latitude cyclogenesis occurs...

, strengthening, weakening, landfall

Landfall (meteorology)

Landfall is the event of a tropical cyclone or a waterspout coming onto land after being over water. When a waterspout makes landfall it is reclassified as a tornado, which can then cause damage inland...

, extratropical transition, as well as dissipation. The 2007 North Indian Ocean cyclone season was an ongoing event in the annual cycle of tropical cyclone formation.

For convenience and clarity, in the timeline below, all landfalls are bolded. Where the exact time of an event is unclear, c.
Circa
Circa , usually abbreviated c. or ca. , means "approximately" in the English language, usually referring to a date...

is used to denote the approximate time.

The India Meteorological Department

India Meteorological Department

The India Meteorological Department , also referred to as the Met Office, is an agency of the Ministry of Earth Sciences of the Government of India. It is the principal agency responsible for meteorological observations, weather forecasting and seismology...

(IMD) is the official Regional Specialized Meteorological Centre

Regional Specialized Meteorological Centre

A Regional Specialized Meteorological Centre is responsible for the distribution of information, advisories, and warnings regarding the specific program they have a part of, agreed by consensus at the World Meteorological Organization as part of the World Weather Watch.-Tropical...

in this basin, while 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...

releases unofficial advisories.

Storms tracked by the JTWC are referred to numerically to avoid confusion, as the JTWC sometimes recognises a storm at a different intensity compared to the IMD.

The graphical bar above gives a brief overview of storm activity during the season, and a storm's maximum intensity category in terms of wind speed

Wind speed

Wind speed, or wind velocity, is a fundamental atmospheric rate.Wind speed affects weather forecasting, aircraft and maritime operations, construction projects, growth and metabolism rate of many plant species, and countless other implications....

is included as a colour bar. This is given by the IMD's values of maximum 10-minute sustained winds. The colour scheme is detailed to the right.

January to April

There were no Cyclonic Disturbances reported in the North Indian Ocean between January and April 2007.

May

May 3

1200 UTC, (1730 IST) — The IMD reports that Depression BOB 01 has formed about 210 km, (130 mi), to the north of Port Blair
Port Blair
Port Blair is the largest town and a municipal council in Andaman district in the Andaman Islands and the capital of the Andaman and Nicobar Islands, a union territory of India...

in the Andaman islands
Andaman Islands
The Andaman Islands are a group of Indian Ocean archipelagic islands in the Bay of Bengal between India to the west, and Burma , to the north and east...

.

May 5

0300 UTC, (1730 IST) — The IMD reports that Depression BOB 01 has made landfall on the Arakan coast, Myammar
Rakhine State
Rakhine State is a Burmese state. Situated on the western coast, it is bordered by Chin State in the north, Magway Region, Bago Region and Ayeyarwady Region in the east, the Bay of Bengal to the west, and the Chittagong Division of Bangladesh to the northwest. It is located approximately between...

and has dissipated.

May 13

0300 UTC, (1730 IST) — The IMD reports that Depression BOB 02 has formed about 445 km to the northeast of Port Blair in the Andaman islands.
1800 UTC, (2330 IST) — The JTWC designates Depression BOB 02 as Tropical Storm 01B.
2100 UTC, (0200 IST, May 14) — The IMD reports that Depression BOB 02 (01B), has intensified into a deep depression.

May 14

0300 UTC, (0730 IST) — The IMD reports that Depression BOB 02 (01B), has intensified into a cyclonic storm and names it as Akash
Cyclone Akash
Cyclone Akash was the first named tropical cyclone of the 2007 North Indian Ocean cyclone season...

.
0600 UTC, (1130 IST) — The IMD reports that Cyclonic Storm Akash (01B), has reached its 3-minute peak sustained wind speeds of 80 km/h, (50 mph).
1800 UTC, (2330 IST) — The JTWC reports that Tropical Storm Akash (01B), has strengthened into a category 1 tropical cyclone.
1800 UTC, (2330 IST) — The JTWC reports that Tropical Storm Akash (01B), has reached its 1-minute peak sustained wind speeds of 120 km/h, (75 mph).
2300 UTC, (0430 IST, May 15) — The IMD reports that Cyclonic Storm Akash (01B), has made landfall to the south of Cox's Bazar, Bangladesh.

May 15

0000 UTC, (0530 IST) — The IMD reports that Cyclonic Storm Akash (01B), has rapidly weakened into a depression and issues its final advisory.
0000 UTC, (0530 IST) — The JTWC reports that Tropical Cyclone Akash (01B), has weakened into a tropical storm and issues its final advisory.

June

June 1

0600 UTC, (1130 IST) — The JTWC reports that Tropical Depression 02A has formed about 560 km, (350 mi), to the southwest of Mumbai, India.
1800 UTC, (2330 IST) — The IMD designates Tropical Cyclone 02A as Depression ARB 01.

June 2

0300 UTC, (0830 IST) — The IMD reports that Depression ARB 01 (02A), has intensified into a Deep Depression.
0900 UTC, (1430 IST) — The IMD reports that Deep Depression ARB 01 (02A), has intensified into a Cyclonic Storm and names it Gonu
Cyclone Gonu
Cyclone Gonu is the strongest tropical cyclone on record in the Arabian Sea, and is also the strongest named cyclone in the northern Indian Ocean...

.

June 3

0000 UTC, (0530 IST) — The IMD reports that Cyclonic Storm Gonu (02A), has intensified into a Severe Cyclonic Storm.
1800 UTC, (2330 IST) — The IMD reports that Severe Cyclonic Storm Gonu (02A), has intensified into a Very Severe Cyclonic Storm.
1800 UTC, (2330 IST) — The IMD reports that Very Severe Cyclonic Storm Gonu (02A), has become the most intense Cyclonic Storm on record in the Arabian sea.

June 4

1500 UTC, (2030 IST) — The IMD reports that Severe Cyclonic Storm Gonu (02A), has intensified into a Super Cyclonic Storm.
1500 UTC, (2030 IST) — The IMD reports that Super Cyclonic Storm Gonu (02A), has reached its 3-minute peak sustained wind speeds of 240 km/h, (150 mph).
2100 UTC, (0230 IST, June 6) — The IMD reports that Super Cyclonic Storm Gonu (02A), has weakened into a Very Severe Cyclonic Storm.

June 6

0300 UTC, (0830 IST) — The IMD reports that Very Severe Cyclonic Storm Gonu (02A), has made landfall on Oman
Oman
Oman , officially called the Sultanate of Oman , is an Arab state in southwest Asia on the southeast coast of the Arabian Peninsula. It is bordered by the United Arab Emirates to the northwest, Saudi Arabia to the west, and Yemen to the southwest. The coast is formed by the Arabian Sea on the...

.
2100 UTC, (0230 IST, June 7) — The IMD reports that Very Severe Cyclonic Storm Gonu (02A), has weakened into a Severe Cyclonic Storm.

June 7

0000 UTC, (0530 IST) — The IMD reports that Severe Cyclonic Storm Gonu (02A), has weakened into a cyclonic storm.
0400 UTC, (0930 IST) — The IMD reports that Cyclonic Storm Gonu (02A), has made landfall near Makaran in Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

.
0600 UTC, (1130 IST) — The IMD issues its final advisory on Cyclonic Storm Gonu (02A).

June 21

0000 UTC, (0530 IST) — The JTWC reports that Tropical Depression 03B, has formed about 375 km, (235 mi), to the southeast of Visakhapatnam
Visakhapatnam
Visakhapatnam is a major sea port on the south east coast of India. With a population of approximately 1.7 million, it is the second largest city in the state of Andhra Pradesh and the third largest city on the east coast of India after Kolkata and Chennai. According to the history, the city was...

in India.
0300 UTC, (0830 IST) — The IMD designates Tropical Depression 03B as Depression BOB 03.
1200 UTC, (0530 IST) — The IMD reports that Depression BOB 03 has intensified into a deep depression.

June 22

c. 2300 UTC — Deep Depression BOB 03/2007 makes landfall near Kakinada, Andhra Pradesh, India.
0900 UTC — The JTWC issues its final advisory on Tropical Cyclone 03B, dissipating in the Deccan Plateau
Deccan Plateau
The Deccan Plateau is a large plateau in India, making up the majority of the southern part of the country. It rises a hundred meters high in the north, rising further to more than a kilometers high in the south, forming a raised triangle nested within the familiar downward-pointing triangle of...

in India.

June 23

0300 UTC — Deep Depression BOB 03/2007 is downgraded to a depression.

June 24

0300 UTC — The IMD issues its final bulletin on Depression BOB 03/2007.

June 25

0300 UTC — The IMD resumes advisories on Depression BOB 03/2007.
0900 UTC — The JTWC resumes advisories on Tropical Cyclone 03B, south of Karachi
Karachi
Karachi is the largest city, main seaport and the main financial centre of Pakistan, as well as the capital of the province of Sindh. The city has an estimated population of 13 to 15 million, while the total metropolitan area has a population of over 18 million...

, Pakistan
Pakistan
Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...

.
1200 UTC — Depression BOB 03/2007 is upgraded to Deep Depression BOB 03/2007.
1300 UTC — The PMD upgrades Deep Depression BOB 03/2007 to a severe cyclonic storm, naming it "Yemyin". However, the IMD does not follow suit at this time, leaving this storm operationally unnamed. It would be retroactively named Yemyin in post-analysis.

June 26

c. 0300 UTC — Deep Depression BOB 03/2007 makes landfall near Ormara
Ormara
Ormara is a port city located in the Makran or coastal region of Balochistan Province in Pakistan. It is located 360 km west of Karachi and 230 km east of Gwadar on the Arabian Sea. This port is also mentioned in Periplus of the Erythraean Sea as Oraea.- History :Ormara is an old...

and Pasni
Pasni City
Pasni is a medium-sized town and a fishing port in Gwadar, Balochistan, Pakistan. Its population is around 33.000. It is located on the Makran coast on Arabian Sea about 300 km from Karachi...

, in Balochistan province
Balochistan (Pakistan)
Balochistan is one of the four provinces or federating units of Pakistan. With an area of 134,051 mi2 or , it is the largest province of Pakistan, constituting approximately 44% of the total land mass of Pakistan. According to the 1998 population census, Balochistan had a population of...

, Pakistan, and its final bulletin was issued.
2100 UTC — The JTWC issues its final advisory on Tropical Cyclone 03B, dissipating in inland Pakistan.

June 27

0000 UTC, (0530 IST) — The JTWC reports that Tropical Depression 04B has formed about 410 km (255 mi) to the southeast of Puri, India.

June 28

0000 UTC, (0530 IST) — The IMD designates Tropical Depression 04B as Depression BOB 04.
0300 UTC, (0830 IST) — The IMD reports that Depression BOB 04, has intensified into a deep depression.
1200 UTC, (1730 IST) — The JTWC reports that Tropical Depression BOB 04 (04B), has intensified into a tropical storm.

June 29

0100 UTC, (0630 IST) — The IMD reports that Deep Depression BOB 04 (04B), has made landfall near Puri, India.
1800 UTC, (2330 IST) — The JTWC reports that Tropical Storm BOB 04 (04B), has weakened into a tropical depression.

June 30

0000 UTC, (0530 IST) — The JTWC reports that Tropical Depression BOB 04 (04B), has weakened into a tropical disturbance.
0300 UTC, (0830 IST) — The IMD reports that Deep Depression BOB 04 (04B), has weakened into a depression.
0600 UTC, (1130 IST) — The JTWC issues its final advisory on Tropical Disturbance BOB 04 (04B).

July

July 1

1200 UTC, (1730 IST) — The IMD issues its final advisory on Depression BOB 04 as it weakens into an area of low pressure.

July 4

0300 UTC, (0830 IST) — The IMD reports that Depression BOB 05 has formed over Bangladesh about 135 km, (85 mi), to the southeast of Kolkata
Kolkata
Kolkata , formerly known as Calcutta, is the capital of the Indian state of West Bengal. Located on the east bank of the Hooghly River, it was the commercial capital of East India...

, India.

July 5

1200 UTC, (1730 IST) — The IMD reports that Depression BOB 05, has intensified into a deep depression.

July 7

0300 UTC, (0830 IST) — The IMD reports that Deep Depression BOB 05, has weakened into a depression.

July 9

1200 UTC, (1730 IST) — The IMD issues its final advisory on Depression BOB 05, as it weakens into a low pressure area.

August

August 5

0000 UTC, (0530 IST) — The IMD reports that Depression BOB 06 has formed about 285 km, (210 mi), to the south of Kolkata
Kolkata
Kolkata , formerly known as Calcutta, is the capital of the Indian state of West Bengal. Located on the east bank of the Hooghly River, it was the commercial capital of East India...

, India.
1800 UTC, (2330 IST) — The IMD reports that Depression BOB 06 has intensified into a deep depression.

August 6

0200 UTC, (0730 IST) — The IMD reports that Deep Depression BOB 06 has made landfall between Chandbali and Paradip
Paradip
Paradip, also spelt Paradeep, is a major seaport town and a designated notified area in Jagatsinghpur district of Orissa, India.-Geography:Paradip is located at . It has an average elevation of .-Paradip Port:...

.

August 7

0300 UTC, (0830 IST) — The IMD reports that Deep Depression BOB 06 has weakened into a depression.
1200 UTC, (1730 IST) — The IMD issues its final advisory on Depression BOB 06 as it weakens into a low pressure area.

September

September 21

1200 UTC, (1730 IST) — The IMD reports that Depression BOB 07 has formed about 335 km, (210 mi), to the east of Visakhapatnam, India.

September 22

1400 UTC, (1930 IST) — The IMD reports that Depression BOB 07 has made landfall near Puri in Orissa, India.

September 24

1200 UTC, (1730 IST) — The IMD issues its final advisory on Depression BOB 07 as it weakens into a low pressure area.

October

October 27

0600 UTC, (1130 IST) — The JTWC reports that a Tropical Depression 05A has formed about 1160 km, (620 mi), to the southeast of Mumbai
Mumbai
Mumbai , formerly known as Bombay in English, is the capital of the Indian state of Maharashtra. It is the most populous city in India, and the fourth most populous city in the world, with a total metropolitan area population of approximately 20.5 million...

in India.
1800 UTC, (2330 IST) — The IMD reports that Depression BOB 08 has formed about 725 km, (450 mi), to the southeast of Visakhapatnam in India.
1800 UTC, (2330 IST) — The IMD designates Tropical Depression 05A as Depression ARB 03.

October 28

0000 UTC, (0530 IST) — The JTWC reports that Tropical Depression ARB 03 (05A), has intensified into a tropical storm.
0000 UTC, (0530 IST) — The JTWC reports that Tropical Storm ARB 03 (05A), has reached its 1-minute peak sustained wind speeds of 75 km/h, (45 mph).
0300 UTC, (0830 IST) — The IMD reports that Depression ARB 03 (05A), has intensified into a deep depression.
0300 UTC, (0830 IST) — The IMD reports that Tropical Storm ARB 03 (05A), has reached its 3-minute peak sustained wind speeds of 55 km/h, (35 mph).

October 29

0300 UTC, (0830 IST) — The IMD issues their final advisory on Depression BOB 08 as it weakens into a low pressure area.

October 30

0000 UTC, (0530 IST) — The JTWC reports that Tropical Storm ARB 03 (05A), has weakened into a tropical depression.
0000 UTC, (0530 IST) — The JTWC issues their final advisory on Tropical Depression ARB 03 (05A).

November

November 2

0300 UTC, (0830 IST) — The IMD reports that Deep Depression ARB 03 (05A), has weakened into a depression.
1200 UTC, (1730 IST) — The IMD reports that Depression ARB 03 (05A), has weakened into a low pressure area and issues its final advisory.

November 10

1800 UTC, (2330 IST) — The JTWC reports that Tropical Depression 06B, has formed about 200 km, (125 mi), to the south of Port Blair
Port Blair
Port Blair is the largest town and a municipal council in Andaman district in the Andaman Islands and the capital of the Andaman and Nicobar Islands, a union territory of India...

in the Andaman islands
Andaman Islands
The Andaman Islands are a group of Indian Ocean archipelagic islands in the Bay of Bengal between India to the west, and Burma , to the north and east...

.

November 11

0600 UTC, (1130 IST) — The JTWC reports that Tropical Depression 06B has intensified into a tropical storm.
0900 UTC, (1430 IST) — RSMC New Delhi designates Tropical Depression 06B as Depression BOB 09.
1800 UTC, (2330 IST) — The IMD reports that Depression BOB 09 (06B), has intensified into a deep depression.

November 12

0300 UTC, (0830 IST) — The IMD reports that Deep Depression BOB 09 (06B), has intensified into a cyclonic storm and names it as Sidr.
0600 UTC, (1130 IST) — The JTWC reports that Tropical Storm Sidr (06B), has intensified into a category 1 tropical cyclone.
1200 UTC, (1730 IST) — The IMD reports that Cyclonic Storm Sidr has intensified into a severe cyclonic storm.
1800 UTC, (2330 IST) — The IMD reports that Severe Cyclonic Storm Sidr has intensified into a very severe cyclonic storm.
1800 UTC, (2330 IST) — The JTWC reports that Tropical Cyclone Sidr (06B), has intensified into a category 3 tropical cyclone.

November 13

0600 UTC, (1130 IST) — The JTWC reports that Tropical Cyclone Sidr (06B), has intensified into a category 4 tropical cyclone.

November 14

1200 UTC, (1730 IST) — The JTWC reports that Tropical Cyclone Sidr (06B), has intensified into a category 4 super tropical cyclone.
1800 UTC, (2330 IST) — The JTWC reports that Super Tropical Cyclone Sidr (06B), has intensified into a category 5 super tropical cyclone.
1800 UTC, (2330 IST) — The JTWC reports that Super Tropical Cyclone Sidr (06B), has reached its 1-minute peak sustained wind speeds of 260 km/h, (160 mph).

November 15

0300 UTC, (0830 IST) — The IMD reports that Very Severe Cyclonic Storm Sidr has reached its 3-minute peak sustained wind speeds of 215 km/h, (130 mph).
1200 UTC, (1730 IST) — The JTWC reports that Super Tropical Cyclone Sidr (06B), has weakened into a category 4 super tropical cyclone.
1600 UTC, (1930 IST) — Very Severe Cyclonic Storm Sidr makes landfall on Bangladesh.
1800 UTC, (2330 IST) — The JTWC reports that Super Tropical Cyclone Sidr (06B), has rapidly weakened into a category 3 tropical cyclone.
2100 UTC, (0230 IST, November 16) — The IMD reports that Very Severe Cyclonic Storm Sidr has weakened into a cyclonic storm.

November 16

0000 UTC, (0530 IST) — The JTWC reports that Super Tropical Cyclone Sidr (06B), has rapidly weakened into a tropical storm.
0000 UTC, (0530 IST) — The JTWC issues its final advisory on Tropical Storm Sidr (06B) as it rapidly dissipates.
0300 UTC, (0830 IST) — The IMD reports that Cyclonic Storm Sidr has weakened into a depression and issues its final advisory as it rapidly dissipates.

December

There were no Cyclonic Disturbances reported in the North Indian Ocean during December 2007.

External links

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