Weather: IMD watch for depression in Bay of Bengal

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Low-pressure area by Monday; heavy rainfall is likely over Tamil Nadu and Puducherry
A well-marked but inconsequential low-pressure area over lies over the South-West Arabian Sea that is expected to become a depression by tomorrow (Sunday), but what is of import for the currently stalled North-East monsoon is a depression watch closer home to the East of Sri Lanka.

India Meteorological Department (IMD) has picked a cyclonic circulation over Equatorial Indian Ocean and adjoining South-East Bay of Bengal, which it expects to concentrate into a low-pressure area by Monday and further into a depression over South-West Bay of Bengal.

Track towards Lanka-TN coast

This depression is forecast to move in a typical West-North-West direction towards the coast of Sri Lanka and Tamil Nadu during the subsequent days, the IMD outlook said. This would expectedly revive the North-East monsoon yet again over the Tamil Badu coast from Monday itself.

Rains would scale up over the South Peninsula as a whole from Monday with scattered to fairly widespread rainfall accompanied with thunderstorms, especially over Tamil Nadu, while it would be isolated over the rest parts of the South Peninsula. Isolated heavy falls is likely over Tamil Nadu on Monday and isolated heavy to very heavy on Tuesday and Wednesday.

ECMWF outlook for rain spell

The European Centre for Medium-Range Weather Forecasts (ECMWF) said that moderate rain may lash the North-East coast of Sri Lanka first late into the night of Sunday (tomorrow). It would be Puducherry and the rest of the southern coast of Tamil Nadu that would get the heavy spell from Monday afternoon.

Chennai may receive the first heavy spell from Tuesday morning according to the ECMWF while it would be moderate over…
Vinson Kurian
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