
The deep depression over the northwest Bay of Bengal crossed the West Bengal-Bangladesh coast between Sagar Island and Khepupara, close to Raidighi (West Bengal), between 10.30 am and 11.30 am on May 29, 2025, according to the India Meteorological Department (IMD).
The system is expected to move north-northeastwards, maintain its intensity until the evening and gradually weaken into a depression. Extremely heavy rainfall is forecast in Meghalaya on May 30, with exceptionally heavy rain (over 30 centimetres) possible in isolated areas.
Assam is also likely to receive extremely heavy rainfall (over 20 cm), while Nagaland, Manipur, Mizoram, Tripura, Arunachal Pradesh, Sub-Himalayan West Bengal and Sikkim are expected to receive heavy to very heavy rainfall on May 29-30.
Squally winds at 40-50 kmph, gusting to 60 kmph, will continue across the region. Gangetic West Bengal and Odisha may experience heavy to very heavy rainfall (7-20 cm) on May 29, accompanied by squally winds reaching up to 70 kmph along and off the coasts. Sea conditions are expected to remain rough to very rough along the Odisha, West Bengal and Bangladesh coasts, with warnings issued for fishermen.
On the west coast, extremely heavy rain is forecast over Tamil Nadu, coastal Karnataka and south Interior Karnataka on May 29 and over Kerala and Mahe on both May 29 and 30. Konkan and Goa are also likely to receive heavy to very heavy rainfall on May 29.
Thunder squalls with wind speeds reaching up to 70 kilometres per hour are expected in parts of Madhya Pradesh, Chhattisgarh, Rajasthan, Punjab, Haryana, Delhi and Uttar Pradesh on May 29-30. Heavy rainfall is also likely over Vidarbha, Chhattisgarh, Bihar and Gangetic West Bengal through May 30.
In the northwest, Jammu & Kashmir, Himachal Pradesh and Uttarakhand are expected to receive heavy rain between May 30 and June 2, while isolated dust storms may occur over West Rajasthan on May 29-30. Heat wave conditions are likely in isolated pockets of West Rajasthan on May 30 and 31.
Meanwhile, the southwest monsoon has advanced into parts of Chhattisgarh, Odisha, the North Bay of Bengal, the northeastern states, Sub-Himalayan West Bengal and Sikkim. Further advance into parts of West Bengal and Bihar is likely over the next one to two days.
For daily heat tracker, click here