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Shower to keep Celsius in check

The “well-marked” low-pressure area hovering over the Bay of Bengal brought intermittent showers to Calcutta on Sunday.

Met officials said the system was heading for land, moving north to Jharkhand and Odisha. The low-pressure area, situated south of the coast of Odisha on Sunday, brought 7.6mm of rain to Calcutta till 5.30pm.

“It is moving towards Jharkhand and Odisha but Calcutta would fall on the outer ring of the system. There could be light rainfall in the city for the next 48 hours,” said Gokul Chandra Debnath, director of the India Meteorological Department in Calcutta.

Debnath said the coastal areas of Bengal would get heavy downpour till Tuesday. The clouds thereafter will move north to Malda and Cooch Behar.

A well-marked low-pressure area is stronger than a regular one but weaker than a depression. Like all such systems, it sucks in air because of lower atmospheric pressure than its surroundings.

Because of the system, moist winds from the Bay are blowing towards land and forming clouds, leading to rainfall.

The sky cleared for a while in the evening for the sun to make a brief appearance but the day was largely pleasant as the maximum temperature slid to 32.1 degrees Celsius, four rungs below normal. Saturday’s high was 38.1 degrees Celsius, two notches above normal.

Weather scientists said the maximum temperature would dip to 31 and 32 degrees Celsius over the next couple of days.

Calcuttans heaved a collective sigh of relief when the first drops of rain fell on Sunday morning after 19 rainless days since May 5 and 10 days of heatwave in between.

Monsoon normally arrives by June 10 but it may be delayed this year.