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Vinson Kurian

Thiruvananthapuram, March 24 The remnant cyclonic circulation lobbed in by a parent ‘low’ in the Arabian Sea has set about scorching the country’s southeast coast, with incoming moisture from the Bay of Bengal to the immediate east causing it to spin faster and retain its vigour.

Most of Kerala and Tamil Nadu may have or is in the process of drying up, but they would have to contend with renewed easterly wave activity over southwest Bay of Bengal towards the month-end and a resultant trough of low pressure covering south peninsular India extending south towards Maldives.

The Regional Met Centre, Chennai, said that during the 24 hours ending Monday morning, rainfall occurred at most places over north interior Karnataka, at many places over coastal and south interior Karnataka and at a few places in Tamil Nadu, Andhra Pradesh and Kerala.

This rain wave would band together with the ongoing precipitation in the northeast being triggered by the sub-tropical westerly jet dipping to the south. Scattered to fairly widespread rain or thundershower activity is likely to continue over these parts during the next three days. Facilitating this is a trough running from sub-Himalayan West Bengal and Sikkim to North Bay of Bengal through Gangetic West Bengal. Towards the south, a trough extending from the ‘low’ over east–central Arabian Sea and southeast Arabian Sea off the Karnataka coast to west Madhya Maharashtra has become unimportant.

Another cyclonic circulation lay over southeast Arabian Sea and adjoining Lakshadweep. To the west of the country, a cyclonic circulation has sprung up over Saurashtra in advance of the arrival of a deep westerly trough from across the border.

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