2008 North Indian Ocean cyclone season severe cyclonic storm. The JTWC unofficially tracked seven systems, with six having one-minute sustained winds greater than 65 km/h (40 mph), slightly above their 32-year average of five. Activity was mostly limited to the Bay of Bengal, with only two depressions developing in the Arabian Sea. Somewhat unusually, no depression developed during the month of July due to the lack of a prominent monsoon. Collectively, there were a total of 30 days of activity in the basin, with no storms existing simultaneously. The first and most destructive storm of the season, Cyclone Nargis struck the Irrawaddy Delta in southern Myanmar,
Cyclone Nargis of low vertical wind shear, before it was classified as a depression by the India Meteorological Department early on 27 April. Initially, the depression moved westward and was classified as a deep depression by the IMD, before the United States Joint Typhoon Warning Center (JTWC) initiated advisories and classified the storm as Tropical Cyclone 01B later that day. The system subsequently started to move north-westwards under the steering influence of an anticyclone and an upper level ridge of high pressure. At 0000 UTC, 5:30 AM Indian Standard Time, on 28 April, the IMD upgraded the system to Cyclonic Storm Nargis,