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The India Meteorological Department (IMD) has declared that the South-West monsoon has withdrawn from the entire country on Thursday. But it stopped short of announcing the onset of the North-East monsoon, although thundershowers have been reported from many parts of Tamil Nadu and Kerala during the 24 hours ending in the morning.
CONDITIONS FAVOURABLE
The IMD said that conditions continued to remain favourable for commencement of the North-East monsoon over Tamil Nadu, Kerala and adjoining areas of Andhra Pradesh and Karnataka on Friday. Satellite imagery showed convective (rain-bearing) clouds rising over south Tamil Nadu, South Andaman Sea, South-West Bay of Bengal, Comorin area and South-East Arabian Sea.
A rain warning for the next two days said that heavy rainfall would occur at one or two places over Tamil Nadu and Kerala. An extended outlook for the next seven days said that thundershowers would continue to break out at many places over extreme south peninsular India.
HEAVY FALLS
Heavy falls have been indicated at one or two places over coastal Tamil Nadu during this period. A US-based storm tracker said that the heavy rain regime to the west of Sri Lanka and around the Comorin region would propel along the South-West coast of India over the next few days.
Normally, the rain-head should travel west into open Arabian Sea, but the forecast suggests it would careen north along the west coast.
This could possibly because of the westerly winds from the opposite side associated with a passing western disturbance.
If this were to hold true, the west coast might be able to witness a wet spell over the next few days.
Meanwhile in the north, minimum temperatures have risen above normal by 2 to 4 deg Celsius with a warmth-building western disturbance dropping anchor. But they are below normal by the same margin in areas far to the south including north interior Karnataka, Maharashtra, Andhra Pradesh and Odisha.
> vinson.kurian@thehindu.co.in
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