| Pune |
November 13, 2020 8:51:54 pm
AFTER A delayed onset adopted by subdued exercise, the Northeast monsoon has lastly proven some indicators of revival over the southern peninsular area.
Two consecutive streams of easterly winds have made the winter monsoon lively. The India Meteorological Division (IMD) warned of heavy rain accompanied by thunder and lightning throughout Tamil Nadu, Karaikal, Puducherry, coastal Andhra Pradesh, Kerala and Lakshadweep until November 18.
“A trough within the easterlies in decrease ranges is prone to have an effect on the southern peninsula from November 15. Pretty widespread rain is forecast through the subsequent 4 to 5 days,” learn the Met division’s forecast issued on Friday.
Because the center of this week, monsoon exercise had picked up in components of Karnataka, Andhra Pradesh and Tamil Nadu. These states had, in any other case, not obtained any vital rain since October 28, when the Northeast monsoon arrived over the peninsula.
Greater than another state, rainfall related to the Northeast monsoon is essential for Tamil Nadu, which receives 70 per cent of its annual rain between October and December.
However the IMD’s rainfall information between October 1 and November 12 means that Tamil Nadu recorded 50 per cent, Kerala recorded 65 per cent and Lakshadweep reported 37 per cent of the season’s rainfall since October 1 and remaining essentially the most rain-deficient within the peninsula. As of November 11, the entire of the southern peninsula obtained solely 7 per cent of regular rain for the season.
This 12 months, the IMD forecast a under regular rainfall within the ongoing season over excessive southern components of Tamil Nadu. One of many drivers for subdued rain was the prevailing La Nina circumstances.
“Throughout years when La Nina circumstances prevail, the Northeast monsoon stays under regular,” stated a senior meteorologist from Nationwide Climate Forecasting Centre, New Delhi.
La Nina is cooler than regular sea floor temperatures recorded alongside the East and central Pacific Ocean. It influences rainfall over India.
Different subdivisions within the South — Rayalaseema, inside Karnataka and coastal Andhra Pradesh — stay within the regular class, however rainfall continues to be poor between 3 and 10 per cent this season.
Met officers have steered some enchancment within the rainfall state of affairs through the present spell. The easterly winds, within the coming days, will push the minimal temperatures in central components of India. Clouding and related thunderstorm is predicted over Maharashtra after November 15.
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