A cyclonic circulation developing over the Andaman Sea threatens Kolkata with rains during Diwali

Kolkata might have to face rains during Diwali to be celebrated on October 24. This could be because of a fresh weather system developing over the Andaman Sea. The Met forecast says the cyclonic circulation could get stronger. The director-general of India Meteorological Department provided details. He explained - “A cyclonic circulation has formed over the central and adjoining north Andaman Sea and its neighbourhood. It is expected to move west-northwestwards. Around October 20-21, it is expected to be over the central Bay of Bengal as a low-pressure area. By October 22, it will become a depression.” He cautioned the people against jumping into a premature conclusion that the system would turn into a cyclone. He admitted that - “What happens after the system turns into a depression is still not clear. The IMD is constantly monitoring the system.” Bay of Bengal system threatens rain in Kolkata on Diwali. He concluded that it might be a rainy Diwali in Kolkata.

The deputy director-general of IMD, Kolkata informed that the Met office would soon issue a detailed forecast for Diwali. It would cover the expected spread and intensity of the rain. According to a Met official, the months of May and October-November are the pre-and post-monsoon months. These are favorable for cyclonic storms because the sea surface temperature is on the higher side. Incidentally, a weather system draws on the heat and moisture to gain strength on the sea. The IMD radar system atop the New Secretariat building on Strand Road is under repairs. IMD and ISRO are involved in the work and it would be complete by year-end, or the beginning of next year. It was imported from Germany in 2002 and two more radar will arrive in Kolkata in a couple of years.

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