CHENNAI:  On November 11 and 12, the Indian Meteorological Department (IMD) issued an orange signal for the Chengalpattu, Kancheepuram, Tiruvallur, and Chennai districts.

This comes after a heavy to very high rainfall alert in these districts.   In a statement, the Meteorological Department said that the weather system is likely to move towards Puducherry and  Tamil Nadu, and this may cause heavy to very heavy rainfall, particularly in Chennai and adjoining districts.

According to the statement, "a low-pressure area has formed over the same region and the cyclonic circulation extends up to 7.6 km above sea level over Southwest Bay of Bengal and bordering equatorial Indian ocean."

The cyclonic circulation is expected to become more noticeable during the following 48 hours and proceed toward the northwest, bringing heavy to very severe rains, the weather department said.

The IMD reports that Chennai district received 459.4 mm of rain within the same time duration, representing a 13 percent increase in rains above Tamil Nadu's 237.7 mm shortfall since October 1.

In the upcoming 48 hours, the IMD has predicted thunderstorms and lightning across Chennai and the surrounding regions.

There will be rain from Delhi to Kerala after the earthquake, IMD issued an alert

Heavy rains in these states, IMD alerts

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