Cyclone 'Komen' hit the Bangladesh coast on Thursday evening, bringing with it heavy rainfall in Gangetic West Bengal and Odisha, the Met department said.
After making landfall in Bangladesh, it is expected to move west-north-westwards and weaken gradually.
"Rainfall would occur at most places, with heavy to very heavy rainfall at a few places and extremely heavy at isolated places over the Gangetic West Bengal on July 30-31 and heavy to very heavy rainfall at a few places on August 1," said Mritunjay Mohapatra, head of the Cyclone Warning Division of the India Meteorological Department (IMD).
"Isolated places in Odisha will also witness heavy to very heavy rainfall at most places today and heavy to very heavy rains at a few places with isolated extremely heavy rains on July 31 and August 1," he added.
There would be rains at most places, with heavy to very heavy rainfall at isolated places over the northeastern states of Mizoram, Tripura and Assam till Friday.
Jharkhand will also witness heavy rainfall on Friday and on August 1.
"Squally wind speed reaching 50-60kmph gusting to 70kmph would prevail along and off West Bengal and north Odisha coasts during next 48 hours."
"Squally wind speed reaching 40-50kmph gusting to 60 kmph would prevail over Mizoram and Tripura commencing from this evening for next 24 hours and over Gangetic West Bengal from tomorrow morning. Sea condition would be high over north Bay of Bengal during the same period," Mohapatra added.
Meanwhile, the depression over Gujarat and Madhya Pradesh that brought heavy rains to the states, eventually leading to a flood-like situation, has now reduced to a "well marked low pressure area" over west Rajasthan and neighbourhood areas.
"Rainfall would occur at many places with isolated heavy rainfall over Gujarat region, Daman, Dadra & Nagar Haveli and Saurashtra, Kutch Diu, west Madhya Pradesh during next 48 hours."
"Heavy to very heavy rainfall will occur at isolated places over Rajasthan during next 24 hours," the IMD said in its advisory.