Kolkata: A low-pressure system over the Bay of Bengal will bring heavy to very heavy rainfall to some districts of south Bengal till July 6, potentially causing waterlogging in low-lying areas in the region, the IMD said on Friday.It said that very heavy rain is very likely over South 24 Parganas, Purba and Paschim Medinipur, Jhargram, Purulia, Bankura and Howrah districts on July 5.The low pressure system over northwest Bay of Bengal, which is likely to get more marked during the next two days, will bring heavy rain in most districts of south Bengal, the India Meteorological Department (IMD) said.Also Read: Delhi e-rickshaw drivers fear remote shutdowns amid trafficThe IMD cautioned of possible waterlogging in low-lying areas owing to the possible heavy rains and thunderstorms.After a few days of respite from heavy downpour that affected north Bengal over the past week, heavy rain is once again likely from July 7 in the region.Also Read: Maharashtra govt introduces bill to regulate clinical establishments, bring transperancyThe IMD said heavy rain may occur in all the north Bengal districts, including Darjeeling and Kalimpong, till July 9.