Bengaluru, May 20 -- The India Meteorological Department (IMD) has said that an upper air cyclonic circulation is likely to form around May 21 over the east-central Arabian Sea off the Karnataka coast.

A low-pressure area will likely form over the same region around May 22, under its influence and thereafter, it is likely to move northwards and intensify further, the IMD said.

The Regional Meteorological Centre in Bengaluru has issued warnings for coastal Karnataka. It predicts extremely heavy rain, thunderstorms, and lightning with strong surface winds until May 21 and very heavy to heavy rains until May 26.

For south interior Karnataka, the IMD forecast extremely heavy rain, thunderstorms, and lightning until May 21 and heavy to very...