More rain likely after November 3

More rain likely after November 3

TIMES NEWS NETWORK

30.10.2020

After the record breaking downpour early on Thursday, IMD has forecast more intermittent thunderstorms with heavy rainfall over some areas in the city on Friday. But weather enthusiasts said Chennai is likely to see a brief neardry spell, with a few isolated showers, till November 3 after which the monsoon would pick up pace and bring widespread rainfall to the city, coastal belt and interior districts without long breaks.

On Thursday morning, Nungambakkam received 13.34cm of rain, the highest 24-hour rainfall in October since the 16.19cm recorded on October 18, 2014.

For the next 24 hours, IMD has forecast intermittent thunderstorms, with moderate rain and heavy rainfall in some areas.

The cyclonic circulation over southwest the Bay of Bengal off the north Tamil Nadu coast, which brought the intense spells of rain on Thursday, lies over north Tamil Nadu¬ and south Andhra Pradesh coast and neighbourhood.

After Thursday’s downpour, the Nungambakkam station has recorded 6.5cm excess rain in October. It has registered 31.1cm of rain since October 1 while Meenambakkam has a 96.2% deficit with only 15.5cm rainfall recorded this month.

Weather enthusiasts said November could bring more rain records. Weather blogger Pradeep John said an easterly wave or an elongated area of low air pressure moving from east to west could bring regular early morning rain to the city. “The present cyclonic circulation could fizzle out. Around November 3 or 4, we could expect easterly waves or a circulation bringing us rain almost daily,” he said.

Weather watchers said MJO or Madden Julian Oscillation, a climate phenomenon, likely entering phase 2-3 could act in favour of the monsoon and help bring stronger weather systems possibly in the second half of November. MJO is an eastward moving disturbance of clouds, rainfall, winds and pressure that travels across the tropics and returns to its starting point in 30 to 60 days. “For the next four or five days, the intensity of rainfall is going to become light,” said Skymet Weather in its online post.

CHENNAI IS LIKELY TO SEE A BRIEF DRY SPELL BEFORE RESUMPTION OF RAINFALL