A low-pressure area over the east-central Bay of Bengal is expected to intensify into a depression on Monday, bringing heavy rain to West Bengal from September 22 to 26.
Coastal districts like Purba Medinipur and South 24 Parganas will experience heavier rainfall alongside gusty winds reaching speeds of 40 to 50 kmph.
The weather office advised fishermen not to venture into the deep sea starting September 21 and urged them to return by Monday night.