Seawaters around the South seem to have taken a cue from the heating trend over land and responded in kind churning up circulations with a full-fledged low-pressure prevailing over the South-East Arabian Sea (first pre-monsoon system), while the Bay of Bengal readies to throw up its own on Wednesday.

India Meteorological Department (IMD) expects the cyclonic circulation over the South-East Bay to intensify as a low-pressure area over the South-East Bay and adjoining South Andaman Sea by Wednesday. This is the first of the pre-monsoon season here and may become more ‘marked’ over the North Andaman Sea by Thursday.

The Climate Prediction Centre of the US National Weather Service signals moderate confidence of a storm formation over (farther South to Sri Lanka) and also off the northern coast of Australia. Lower confidence exists for a ‘twin’ of the latter developing over the eastern Bay of Bengal.

US National Centre for Environmental Prediction does not rule out the possibility of a minimal storm pulling away from the South-East Bay towards South Myanmar. The Sri Lankan Met Department, too, has noted the existence of this churn which could intensify as a low-pressure area during the next two days.

Rain, thundershowers seen

The IMD has forecast widespread rain with thunderstorms, lightning and gusty winds for Andaman & Nicobar on next four days. Isolated heavy to very heavy falls are also likely over the islands from Tuesday to Thursday. Fishermen are advised not to venture into South-East Bay and adjoining South Andaman Sea on these days and over Andaman Sea and adjoining Bay on Thursday and Friday.

Heat wave over Rajasthan

Meanwhile, prevailing heat wave over Rajasthan may abate from to Wednesday.

Dust-raising strong surface winds (speed reaching 30-40 km/hr) may prevail over Rajasthan, Haryana, Delhi, West Uttar Pradesh and over Punjab, North Madhya Pradesh, East Uttar Pradesh, Jharkhand and the plains of West Bengal from Tuesday to Thursday. Next heat wave spell is likely from Saturday.

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