1981 North Indian Ocean cyclone season

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1981 North Indian Ocean cyclone season
1981 North Indian Ocean cyclone season summary.jpg
Season summary map
Seasonal boundaries
First system formed October 25, 1981
Last system dissipated December 10, 1981
Seasonal statistics
Total fatalities Unknown
Total damage Unknown
Related articles
North Indian Ocean tropical cyclone seasons
1979, 1980, 1981, 1982, 1983

The 1981 North Indian Ocean cyclone season was part of the annual cycle of tropical cyclone formation. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of five tropical cyclones form in the North Indian Ocean every season with peaks in May and November.[1] Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.[2]

Systems[edit]

Tropical Storm One (1B)[edit]

Tropical storm (SSHWS)
01B Nov 30 1981 0924Z.png Cyclone 01B 1981 track.png
Duration October 28 – November 2
Peak intensity 110 km/h (70 mph) (1-min)  979 hPa (mbar)

The monsoon trough spawned a tropical depression just east of Sri Lanka on October 25. The depression tracked northwestward, becoming a tropical storm on the 27th over southern India. Over the Arabian Sea, it turned northeastward where, after reaching a peak of 70 mph winds, it hit western India on the 2nd.

Cyclone Two (2B)[edit]

Category 1 tropical cyclone (SSHWS)
02B Nov 19 1981 0854Z.png Cyclone 02B 1981 track.png
Duration November 17 – November 20
Peak intensity 140 km/h (85 mph) (1-min)  964 hPa (mbar)

On November 20, Tropical Storm Two, having weakened from a cyclone that developed on the 17th, hit Bangladesh and dissipated soon after.

Cyclone Three (3B)[edit]

Category 1 tropical cyclone (SSHWS)
03B Dec 09 1981 0823Z.png Cyclone 03B 1981 track.png
Duration December 5 – December 10
Peak intensity 140 km/h (85 mph) (1-min)  964 hPa (mbar)

Cyclone Three, which formed from the monsoon trough in the Bay of Bengal on December 5, reached a peak of 85 mph winds on the 9th. It weakened as it continued northward, and hit near the Indian/Bangladesh border on the 10th as a 60 mph tropical storm. Widespread damage and flooding caused at least 92 fatalities.

See also[edit]

References[edit]

  1. ^ "Frequently Asked Questions: What is the annual frequency of Cyclones over the Indian Seas? What is its intra-annual variation?". Indian Meteorological Department. 2012. Archived from the original on May 21, 2015. Retrieved June 8, 2012.
  2. ^ "Bulletins Issued by Regional Specialized Meteorological Centre (RSMC) - Tropical Cyclones, New Delhi" (PDF). India Meteorological Department. May 25, 2009. Retrieved July 16, 2012.

External links[edit]