Light rain with thunder occurred in the southern districts of North 24 Parganas, South 24 Parganas, Puraba Midnapore and Paschim Midnapore on Thursday.

Meanwhile, six districts including Paschim Medinipur, Jhargram, Bankura, Purba and Paschim Bardhaman, and Birbhum, continue to remain on red alert and are likely to experience severe heatwave conditions till Tuesday, said the Met department.