Cyclone Nargis second-deadliest named cyclone of all time, behind Typhoon Nina of 1975. Including unnamed storms like the 1970 Bhola cyclone, Nargis is the sixth-deadliest cyclone of all time, but an uncertainty between the deaths caused by Nargis and those caused by other cyclones (like the 1991 Bangladesh cyclone), could put Nargis as fifth-deadliest or higher, because the exact death toll is uncertain. Nargis was the first tropical cyclone to strike the country since Cyclone Mala made landfall in 2006, which was slightly stronger, but had a significantly lower impact. According to reports, Indian authorities had warned Myanmar about the danger that
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,