List of severe cyclonic storms

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Cyclone Shaheen, making landfall on Oman

A Severe Cyclonic Storm is a category used by the India Meteorological Department (IMD) to classify tropical cyclones, within the North Indian Ocean tropical cyclone basin between the Malay Peninsula and the Arabian Peninsula. Within the basin, a severe cyclonic storm is defined as a tropical cyclone that has 3-minute mean maximum sustained wind speeds of between 48–63 knots (89–117 km/h; 55–72 mph). The category was historically used to classify all tropical cyclones with winds above 48 knots (89 km/h; 55 mph), however, it was bifurcated during 1988, when the IMD introduced a new category called Severe Cyclonic Storm with a core of hurricane winds. This new category was later further refined into Very Severe Cyclonic Storms, Extremely Severe Cyclonic Storms and Super Cyclonic Storms during 1999 and 2015.

Background[]

The North Indian Ocean tropical cyclone basin is located to the north of the Equator, and encompasses the Bay of Bengal and the Arabian Sea, between the Malay Peninsula and the Arabian Peninsula.[1][2] The basin is officially monitored by the India Meteorological Department's Regional Specialized Meteorological Centre in New Delhi, however, other national meteorological services such as the Bangladesh and Pakistan Meteorological Department's also monitor the basin.[1][2]

The Severe Cyclonic Storm category was historically used to classify all tropical cyclones with winds above 48 knots (89 km/h; 55 mph), however, it was bifurcated during 1988, when the IMD introduced a new category called Severe Cyclonic Storm with a core of hurricane winds for all systems above 64 knots (119 km/h; 74 mph).[2] This new category was later further refined into Very Severe Cyclonic Storms, Extremely Severe Cyclonic Storms and Super Cyclonic Storms during 1999 and 2015.[2] As a result, Severe Cyclonic Storms are currently estimated, to have 3-minute sustained wind speeds of between 48–64 kn (89–119 km/h; 55–74 mph).[1]

Systems[]

Name Dates as a
severe cyclonic storm
Duration Sustained
wind speeds
Pressure Areas affected Deaths Damage
(USD)
Refs
Unnamed May 15 – 18, 1967 Not Specified Not Specified 982 hPa (29.00 inHg) [3]
Unnamed December 12 – 17, 1968 Not Specified 70 mph (110 km/h) 996 hPa (29.41 inHg) [4]
Unnamed May 28 – June 2, 1970 Not Specified 60 mph (95 km/h) 986 hPa (29.12 inHg) Saudi Arabia [5]
Unnamed June 5, 1971 12 hours Not Specified 976 hPa (28.82 inHg) West Bengal [6]
Unnamed October 31 – November 1, 1971 1 day 70 mph (110 km/h) 992 hPa (29.29 inHg) Somalia [6]
Unnamed November 5 – 6, 1971 1 day 70 mph (110 km/h) 992 hPa (29.29 inHg) [6]
Hatia November 16 – 17, 1973 2 days 65 mph (100 km/h) 994 hPa (29.35 inHg) Bangladesh [7]
Unnamed December 7 – 9, 1973 2 days 70 mph (110 km/h) 992 hPa (29.29 inHg) [7]
Patuakhali May 30 – June 1, 1974 1 day 60 mph (95 km/h) 986 hPa (29.12 inHg) [8]
Unnamed September 24 – 24, 1974 1 day 70 mph (110 km/h) 990 hPa (29.23 inHg) [8]
Paradip September 27 – 30, 1974 3 days 60 mph (95 km/h) 986 hPa (29.12 inHg) [8]
Chittagong November 25 – 29, 1974 4 days 70 mph (110 km/h) 985 hPa (29.09 inHg) [8]
Unnamed November 26 – 27, 1975 1 day 70 mph (110 km/h) 992 hPa (29.29 inHg) [9]
Unnamed April 29 – May 3, 1976 Not Specified 70 mph (110 km/h) 986 hPa (29.12 inHg) [10]
Unnamed October 12 – 18, 1976 Not Specified 60 mph (95 km/h) 998 hPa (29.47 inHg) [10]
Unnamed November 15 – 17, 1976 Not Specified 70 mph (110 km/h) 992 hPa (29.29 inHg) [10]
Unnamed May 11 - 12, 1977 1 day 70 mph (110 km/h) 984 hPa (29.06 inHg) [11]
Kavali October 31 - November 1, 1977 1 day 65 mph (100 km/h) 996 hPa (29.41 inHg) [11]
Unnamed June 19 - 20, 1979 1 day 65 mph (100 km/h) 980 hPa (28.94 inHg) [12]
Unnamed June 19 - 20, 1979 1 day 65 mph (100 km/h) 980 hPa (28.94 inHg) [12]
Unnamed August 7 - 8, 1979 1 day 65 mph (100 km/h) 971 hPa (28.67 inHg) [12]
Unnamed September 25 - 26, 1981 1 day 65 mph (100 km/h) 983 hPa (29.03 inHg) Orissa [13]
BOB 09 October 16, 1982 12 hours 65 mph (100 km/h) Not Specified [14]
BOB 10 October 16, 1982 12 hours 65 mph (100 km/h) 982 hPa (29.00 inHg) [14]
Herbert October 14 - 15, 1983 12 hours 65 mph (100 km/h) Not Specified [14]
BOB 07 November 2 - 3, 1987 1 day 3 hours 65 mph (100 km/h) 984 hPa (29.06 inHg) [14]
BOB 08 November 12, 1987 12 hours 65 mph (100 km/h) 990 hPa (29.23 inHg) [14]
BOB 06 October 19, 1988 12 hours 65 mph (100 km/h) Not Specified [14]
BOB 09 December 17, 1990 21 hours 65 mph (100 km/h) Not Specified Bangladesh, Myanmar [15]
BOB 07 November 13, 1992 18 hours 65 mph (100 km/h) 994 hPa (29.35 inHg) [14]
ARB 01 May 7, 1994 6 hours 65 mph (100 km/h) 980 hPa (28.94 inHg) [14]
BOB 03 October 30 - 31, 1994 18 hours 70 mph (110 km/h) 988 hPa (29.18 inHg) [14]
ARB 06 October 23 - 24, 1996 1 day 6 hours 70 mph (110 km/h) 994 hPa (29.35 inHg) [14]
BOB 01 May 19 - 20, 1998 21 hours 70 mph (110 km/h) 972 hPa (28.70 inHg) [14]
ARB 10 December 14 - 16, 1998 1 day 18 hours 65 mph (100 km/h) 993 hPa (29.32 inHg) [14]
BOB 01 February 3, 1999 6 hours 60 mph (95 km/h) 998 hPa (29.47 inHg) [14]
BOB 04 November 12, 2002 3 hours 65 mph (100 km/h) 990 hPa (29.23 inHg) [14]
ARB 06 November 13 - 14, 2003 1 day 6 hours 65 mph (100 km/h) 990 hPa (29.23 inHg) [14]
BOB 07 December 14 - 15, 2003 1 day 9 hours 65 mph (100 km/h) 990 hPa (29.23 inHg) [14]
ARB 01 May 7 - 8, 2004 1 day 9 hours 65 mph (100 km/h) 984 hPa (29.06 inHg) [14]
Onil October 2, 2004 15 hours 65 mph (100 km/h) 984 hPa (29.06 inHg) [14]
Agni November 30, 2004 12 hours 65 mph (100 km/h) 994 hPa (29.35 inHg) [14]
Mukda September 23, 2006 9 hours 65 mph (100 km/h) 988 hPa (29.18 inHg) [14]
Aila May 25, 2009 12 hours 70 mph (110 km/h) 968 hPa (28.59 inHg) India, Bangladesh [16]
Laila May 19 - 20, 2010 1 day 6 hours 65 mph (100 km/h) 986 hPa (29.12 inHg) India
Jal November 1 – 8, 2010 70 mph (110 km/h) 988 hPa (29.18 inHg) Thailand, Malaysia, Andaman Islands, India
Helen November 19 – 23, 2013 6 hours 65 mph (100 km/h) 990 hPa (29.23 inHg) India
Mora May 29 – 30, 2017 21 hours 70 mph (110 km/h) 978 hPa (28.88 inHg) Sri Lanka, Andaman and Nicobar Islands
India, Bangladesh, Myanmar, Bhutan, Tibet
[14]
Phethai December 16 – 17, 2018 6 hours 65 mph (100 km/h) 992 hPa (29.29 inHg) India [17]
Nisarga June 1– 4, 2020 70 mph (110 km/h) 990 hPa (29.23 inHg) West India 6 >$664 million [18]
Shaheen September 29 – Present 70 mph (110 km/h) 986 hPa (29.12 inHg) India, Pakistan, Iran, Oman, United Arab Emirates, Saudi Arabia 14 $100 million

Climatology[]

Severe Cyclonic Storms by month.
Month Number of storms
January
0
February
1
March
0
April
1
May
10
June
3
July
0
August
2
September
5
October
11
November
17
December
3
Severe Cyclonic Storms by decade.
Period Number of storms
1950s
0
1960s
0
1970s
18
1980s
7
1990s
8
2000s
9
2010s
4
2020s
0

References[]

  1. ^ a b c RA I Tropical Cyclone Committee. Tropical Cyclone Operational Plan for the Tropical Cyclone Operational Plan for the Bay of Bengal and the Arabian Sea 2019 (PDF) (Report). World Meteorological Organization. Retrieved May 8, 2020.
  2. ^ a b c d Best track data of tropical cyclonic disturbances over the north Indian Ocean (PDF) (Report). India Meteorological Department. July 14, 2009. Retrieved October 31, 2015.
  3. ^ India Weather Review Annual Summary — Part-C: Storms and Depressions 1967 (PDF) (Report). India Meteorological Department. 1969. Retrieved May 30, 2020.
  4. ^ India Weather Review Annual Summary — Part-C: Storms and Depressions 1968 (PDF) (Report). India Meteorological Department. 1969. Retrieved May 26, 2020.
  5. ^ India Weather Review Annual Summary — Part-C: Storms and Depressions 1970 (PDF) (Report). India Meteorological Department. 1971. Retrieved May 26, 2020.
  6. ^ a b c Das, P K; George, C A; Jambunathan, R. "Cyclones and Depressions of 1971 - Bay of Bengal and Arabian Sea" (PDF). Mausam. 23 (4): 453–466.
  7. ^ a b Alexander, George; George, C A; Jambunathan, R (1974). "Cyclones and Depressions of 1973 - Bay of Bengal and Arabian Sea" (PDF). Mausam. 25 (3 & 4): 453–466.
  8. ^ a b c d Alexander, George; Bhaskara Rao, N S; Jambunathan, R (1976). "Cyclones and Depressions of 1974 - Bay of Bengal and Arabian Sea" (PDF). Mausam. 27 (2): 113–126.
  9. ^ Alexander, George; Srinivasan, V; Jambunathan, R (1977). "Cyclones and Depressions of 1975 - Bay of Bengal and Arabian Sea" (PDF). Mausam. 28 (1): 3–20.
  10. ^ a b c Pant P S; Srinivasan, V; Ramakrishnan, A R; Jambunathan, R (1978). "Cyclones and Depressions of 1976 - Bay of Bengal and Arabian Sea" (PDF). Mausam. 29 (4): 613–628.
  11. ^ a b Pant, P S; Ramakrishnan, A R; Jamdunathan, R. "Cyclones and Depressions over the Indian Seas in 1977" (PDF). Mausam. 31 (3): 337–356.
  12. ^ a b c Mukherjee, A K; Ramakrishnan, A R; Jamdunathan, R. "Cyclones and Depressions over the Indian Seas in 1979" (PDF). Mausam. 32 (2): 115–126. Retrieved May 30, 2020.
  13. ^ Mukherjee, A K; Ramakrishnan, A R; Jamdunathan, R. "Cyclones and Depressions over the Indian Seas in 1981" (PDF). Mausam. 34 (1): 1–8. Retrieved May 30, 2020.
  14. ^ a b c d e f g h i j k l m n o p q r s t u "IMD Best track data 1982-2020" (xls). India Meteorological Department. A guide on how to read the database is available here.
  15. ^ Report on Cyclonic Disturbances (Depressions and Tropical Cyclones) over North Indian Ocean in 1990 (PDF) (Report). India Meteorological Department. January 1991. pp. 24–40. Archived from the original (PDF) on 15 January 2015. Retrieved May 17, 2020.
  16. ^ http://www.rsmcnewdelhi.imd.gov.in/images/pdf/publications/annual-rsmc-report/rsmc-2009.pdf
  17. ^ "2.14. Severe Cyclonic Storm "Phethai" over southeast Bay of Bengal (December 13-18, 2018)". Report on Cyclonic Disturbances (Depressions and Tropical Cyclones) over North Indian Ocean in 2018 (PDF) (Report). India Meteorological Department. July 2019. pp. 242–267. Retrieved May 17, 2020.{{cite report}}: CS1 maint: url-status (link)
  18. ^ Gangan, Surendra; Venkatraman, Tanushree (5 June 2020). "Cyclone Nisarga: Crops on 8,000 hectares destroyed in Maharashtra". Hindustan Times. Retrieved 5 June 2020.

External links[]

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