TT Epaper
The Telegraph
Graphiti
 
CIMA Gallary

Advantage north in shower swing

North 2, south 1 — but the monsoon score over the next 48 hours could even out the rain tally.

Sunday afternoon, much like last Wednesday, was the turn of the city’s north to go under in battering downpour while the south had to be satisfied with light drizzle. On Wednesday, the south had the advantage in the drizzle-downpour match.

The Sunday rain submerged several pockets north of Dum Dum, VIP Road and Howrah, including temple town Belur.

Dum Dum received as much as 38mm of rainfall while the Alipore Met office recorded 2.6mm till 5.30pm. But Behala in the south-west experienced steady rainfall from 4pm to 8pm.

According to the weather office, a trough of low pressure and a cyclonic circulation could break the pattern of skewed rainfall and bring widespread rain to the city on Monday and Tuesday.

“Columns of thunderclouds formed in the afternoon in places around Calcutta because of the continuous flow of moisture from the Bay. They were tall but not spread out over a large area. Nor were they moving. Therefore, the rainfall was localised,” said Gokul Chandra Debnath, the director of the India Meteorological Department, Calcutta.

Such clouds are called “in situ” and they brought 30 to 60 minutes of heavy downpour since 1.30pm in the northern areas of Calcutta.

“But a trough of low pressure extending from north India to the coast of Bengal and a cyclonic circulation over Bihar are pulling moisture towards land. Which means rainfall is likely to continue in south Bengal, including Calcutta,” said Debnath.

The rain distribution over the next couple of days could be uniform, a characteristic of the monsoon.

The maximum and minimum temperatures were 34.6 and 28.7 degrees Celsius on Sunday, two and three degrees above normal despite the cloud cover. More than the heat, it was high humidity (between 89 and 70 per cent) that made the day excruciatingly uncomfortable.

The mercury is expected to remain in that range on Monday because of the heat trapped between the earth’s surface and the low clouds. Only a decent spell of rain could cool things down.

Long spells of rain that the city receives in this season have remained elusive since the monsoon flow has been weak since its arrival 10 days behind schedule.

June usually gets 283.5mm of rain but it has to be satisfied with 211.2mm so far, unless Monday brings a torrent riding the trough. Last year, the monsoon arrived on time and, hence, the month’s aggregate rainfall was 409.5mm, a surplus of 44.4 per cent.