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Chennai: A depression over the southwest Bay of Bengal will bring heavy rains to South Tamil Nadu, the regional weather office said on Wednesday. The system lay centered at around 500 km south-south east of Kanniyakumari, the Regional Meteorological Centre said in a release here. It was likely to move northwestwards in the next two days and under its influence, heavy to very heavy rains were likely in one or two places in South Tamil Nadu such as Kanniyakumari, Tirunelveli, Tuticorin, Ramanathapuram, Sivaganga and Viruthunagar, it said.

Heavy rains were also likely in parts of Nagapattinam, Thanjavur and Tiruvarur, it added. Further, squally winds reaching 45-55 kmph was very likely along and off South Tamil Nadu during the next 48 hours, and the sea would be rough, it said.

"Fishermen are advised not to venture" into the sea for their vocation, it added. According to RMC weather data at 1730 hrs of Wednesday, Pamban in Ramanathapuram district recorded 2.9 cm of rainfall, followed by Karaikal at 2.6 cm.