Chill is set to return to the city on Wednesday as Cyclone Madi that was moving northwards over the Bay and blocking the cold North Wind has made a U-turn and started heading south.
The city’s minimum temperature, which read 17.1 degrees Celsius on Tuesday, two notches above normal, is expected to touch 16 degrees on Wednesday and 15 degrees on Thursday, which is normal in Calcutta around this time of the year.
There is no wind system over the sea and meteorologists don’t see anything coming in the next week. So, once the Madi effect dies down, the chill will sustain, say meteorologists.
The maximum temperature on Tuesday rose by a degree from Monday’s 27.2, showing that the sky is clearing of clouds and ambient water vapour that was blocking cold winds.
A cold wave — marked by a minimum temperature five degrees below normal — prevailing in Jharkhand and Odisha suggests that as soon as the relative humidity in Calcutta and the coastal areas nearby comes down, cold winds will rush in.
“Madi has turned into a severe cyclonic storm from the very severe cyclonic storm over 24 hours. The city sky has started clearing. Things will improve as Madi is likely to re-curve south-westwards and gradually die out over the sea,” said a senior official of the India Meteorological Department, Calcutta.
The last cyclone on the Bay of Bengal to have “re-curved” was Ward in 2008.