Kolkata: The IMD on Thursday, August 6, forecast heavy rain in some places across West Bengal till August 7 owing to an active monsoon and favourable wind pattern. Very heavy precipitation is likely over the south Bengal districts of Purba and Paschim Medinipur and Bankura, the India Meteorological Department (IMD) said. Heavy rain is likely over Kolkata, North and South 24 Parganas, Howrah, Jhargram, Purulia and Paschim Bardhaman districts till Friday, it said. Also Read Heavy rain lashes Delhi; IMD issues orange alertThe sub-Himalayan districts of Darjeeling, Kalimpong, Jalpaiguri, Alipurduar and Cooch Behar will receive heavy downpour till Friday, the IMD said. The coastal districts, which have received heavy rain over the last couple of days, are likely to receive more downpour during the next two days, it said.