
Overnight heavy downpour on Wednesday helped reduce T.N.’s seasonal rain deficit this monsoon
The Hindu
Rainfall in TN to reduce gradually as weather system intensifies into depression; heavy rains in 36 places, highest in DGP office (12 cm); depression to move to NW Bay of Bengal off Odisha coast on Sat; rains to cover 50% of weather stations with light-moderate intensity till Nov 21; rainfall deficit now 13% (17% a few days ago).
Rainfall over the State is set to reduce gradually as the weather system has intensified into depression on Wednesday and is likely to grow into deep depression and move further up. The weather system brought heavy overnight rains over 36 places, particularly in coastal districts, and also helped reduce seasonal rain deficit.
During the past 24 hours ending 8.30 a.m. on Wednesday, the rain gauge in DGP office registered 12 cm, which is the highest amount of rainfall in the State. Besides Nagapattinam, Karaikal(11 cm) and several places in and around Chennai received heavy rains.
In its bulletin, the Regional Meteorological Centre, Chennai, has said the depression is likely to concentrate into a deep depression over Westcentral Bay of Bengal off Andhra Pradesh coast on Thursday morning. It would then recurve north-northeastwards and reach Northwest Bay of Bengal off Odisha coast on Friday morning and off North Odisha-West Bengal coasts on Saturday.
There would be a drop in the rainfall activity in the State and scattered rains covering about 50% of the weather stations would occur with light to moderate intensity till November 21.
Officials said another upper cyclonic circulation prevails over Southwest Bay of Bengal and adjoining Sri Lanka. The weather system is being monitored for its impact.
S.Balachandran, Additional Director General of Meteorology, Chennai, said the rainfall has contributed to a gradual decrease in shortage of seasonal rainfall. The State’s rainfall deficit is now 13% compared to 17% recorded a few days ago. Tamil Nadu has so far received 24.1 cm of rains against its normal share of 27.6 cm since October 1.

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