Calcutta’s tryst with showers seems to be over for now as the weather system behind the three-day wet spell has moved away. The next few days will be sunny and humid as there is no other significant wind formation over the Bay of Bengal that could bring rain, the weather office has predicted.
“The low-pressure area that brought rain on three consecutive days to the city and other parts of south Bengal has moved away to Uttar Pradesh. We expect the temperature to rise gradually,” said Gokul Chandra Debnath, director, India Meteorological Department, Calcutta.
On Thursday, the maximum temperature in the city rose by 2.7 degrees Celsius to 30.2, still two degrees below normal. It is likely to rise by another two degrees on Friday.
With monsoon winds bringing in moisture-laden air from the Bay of Bengal — as is normal during this time of the year — the maximum and minimum relative humidity over the past few days were 100 and 86 per cent.
So even a slight rise in temperature can increase the discomfort level many times as the perspiration refuses to evaporate.
On Thursday, the sky was overcast in the morning and a few spells of drizzle were recorded at some places. But the skies cleared around noon and the sun came out.
The rest of the day was predominantly sunny with a few cloudy phases. There was no further rain.
“It was a relief to see the sun after what seems a long time. The weather was just right today. It did not rain but it was not very hot either,” said Poulami Sengupta, a 32-year-old homemaker from Alipore who was taking her son back home from playschool on Thursday afternoon.
A cyclonic circulation had formed on northwest Bay of Bengal on Monday and resulted in the formation of tall cumulonimbus cloud. The system then intensified into a low-pressure area and moved inland.
From Friday, the cloud cover would thin even more and the temperature would rise because of increased solar radiation as the sun’s rays would directly reach earth.
The rainy spell that started on Monday afternoon brought 122mm of rain to the city. Alipore Met office has recorded 677.3mm of rain in the city so far this month, the highest in the past decade.
Saurav Das, a 26-year-old resident of Haridevpur, skidded and fell off his bike on MG Road around 2am on Thursday. Police said he has been admitted to MR Bangur Hospital with injuries on his chest and legs.