A moisture-laden North Wind and lack of snowfall in Kashmir are likely to keep the Celsius in check in the run-up to New Year, the Met office has said.
The minimum temperature climbed up more than a degree in 24 hours to touch 13.7 degrees Celsius on Tuesday. The weather department expects it to vary between 14 and 15 degrees over the next few days.
On Monday the minimum had dropped to 12.6 degrees, the season's lowest so far. The mean minimum in the city around this time is 14.
Calcutta was wrapped with a curtain of fog till noon on Tuesday, an effect of moisture from Arabian Sea getting mixed with the North Wind. The fog reduced visibility and hampered traffic. Cars were seen moving at a slow pace down Red Road around 10am because of poor visibility.
Fog forms when the temperature is low and moisture in the air high. As the day wears on and temperature increases, fog tends to clear.
"An anti-cyclonic circulation over Gujarat and Maharashtra is drawing moisture from the Arabian Sea. The moisture-rich air is mixing with the wind from the north blowing into Calcutta, causing the humidity in the city's air to go up," an official in the India Meteorological Department, Calcutta, said.
The other reason the minimum temperature will be in the 14-15 range is that the Western Disturbance now passing through Kashmir is not strong enough to cause snowfall. A Western Disturbance is an extra-tropical storm that originates in the Mediterranean region and blows east, causing snowfall in its wake.
A fire broke out at a makeshift kitchen beside an under-construction building on the SSKM Hospital premises around 10.30pm on Tuesday. Three tenders doused the fire.