Chennai

This is Chennai's one of the wettest September in a decade

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SW monsoon to continue till mid-October

Chennai has experienced one of the wettest Septembers in a decade. So far, it has received nearly 92% more rain than its average for the month.

The city has recorded nearly 198 mm of rainfall this month as compared to the average of 103 mm. Chennai had previously registered the highest volume of rainfall (297 mm) in September 2016. It had recorded an all-time high rainfall of 314.5 mm in September 1996.

S. Balachandran, Deputy Director General of Meteorology, Chennai said the city experienced several rainy days due to upper air circulation and convective activity. Though there are a couple of days to go for the month to end, it may not make much difference.

The State too recorded considerable rainfall of 160.2 mm this month, which is 53% in excess of its monthly average.

Northeast monsoon

Southwest monsoon is likely to continue till second week of October and once it begins to withdraw, conditions would become favourable for the onset of northeast monsoon.

“Normally, it sets in around October 20. We are monitoring the weather phenomenon,” he said.

Officials of the Meteorological Department said the State may largely experience dry weather except for rains in one or two places till October 1. Chennai too has slim chances of rain during the weekend and the maximum temperature may hover around 35 degrees Celsius.

Earlier, in a meeting held in the city on Friday, the department had decided to approach the Southern Railway to set up automatic rain gauges or automatic weather stations on vacant sites.

At a stakeholders meeting, the participants suggested that the department must install an automatic weather station close to Pamban railway bridge to record wind speed to facilitate train operations during monsoon.

Mr. Balachandran said the department would consider the suggestions as location of rain gauges was important for better data and forecast. On cloud seeding, he said the department was not involved in such initiatives as there was no scientific data on the success rate.

“We provide weather observation data, including those obtained through radar network to the State government. But, we are not directly engaged in cloud seeding as it is not an established fact,” he said.

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Printable version | Jan 28, 2020 9:45:24 PM | https://www.thehindu.com/news/cities/chennai/this-september-one-of-the-wettest-in-a-decade-for-city/article29534302.ece

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