Kolkata:
A cyclonic storm with a wind speed of 65-75 km per hour is likely to hit the West Bengal-Bangladesh coast on Monday evening accompanied by heavy to very heavy rains, the Met office said on Sunday.
"A deep depression lay 500 km south of Kolkata at 2:30 pm which is likely to intensify into a cyclonic storm and hit the West Bengal-Bangladesh coast by tomorrow evening," Regional Director of the Met office, G C Debnath, said in Kolkata.
Gale winds with speed reaching 65-75 km per hour and gusting to 85 km per hour were likely to blow along and off West Bengal coast from this evening, he said.
Heavy to very heavy rainfall is likely at most places with isolated extremely heavy falls (more than 25 cm) over Gangetic West Bengal and north coastal Orissa.
Isolated heavy to very heavy rainfall was also likely over the Northeastern states, Met department sources said.
"Sea condition will be high along and off West Bengal coast. Fishermen are advised not to venture into the sea till Tuesday," Debnath said.
The sea was likely to be rough to very rough along and off the Orissa coast. The cyclone was likely to advance the onset of monsoon in Gangetic West Bengal by more than 10 days.