Cyclone Yaas is likely to form over Bay of Bengal around May 25, according to India Meteorological Department (IMD). Then, it is likely to move northwestwards and reach West Bengal and adjoining Odisha coasts on May 26 evening.
Atmospheric and oceanic conditions, like conducive environment for convection, and sea surface temperatures, are also remaining favourable for persistent cloudiness over Andaman Sea and the adjoining areas of east-central and southeast Bay of Bengal around May 22.
A low pressure area is very likely to form over north Andaman Sea and the adjoining east-central Bay of Bengal.
It is very likely to intensify gradually into a cyclonic storm during the subsequent 72 hours and move northwestwards and reach the West Bengal-Odisha coasts around May 26 evening. Light to moderate rainfall at most places with heavy to very heavy falls at isolated places over Andaman and Nicobar Islands is likely on May 22 and 23.
Light to moderate rainfall at most places with heavy falls at isolated places very likely to commence from May 25 evening with significant increase in spatial extension and intensity subsequently over Odisha – West Bengal, adjoining Assam and Meghalaya.