Pre-monsoon weather peaking in peninsular south

The volatile pre-monsoon weather has shifted mainly to the east, east-central and peninsular India with northwest India mostly clearing up.

Isolated heavy rain has been warned of over Lakshadweep, Kerala, south Karnataka and Tamil Nadu until Monday, an outlook by India Meteorological Department (IMD) said on Friday afternoon.

Isolated thunder squalls would stalk the plains of Madhya Pradesh, Chhattisgarh, Jharkhand, Gangetic West Bengal, Orissa and Vidarbha until Sunday.

WEATHER SYSTEMS

Overseeing the rollout of these weather events were an upper air cyclonic circulation over Assam and neighbourhood.

Another upper air cyclonic circulation lying over west Madhya Pradesh featured an extended trough looking south-southwest and linking with a third over southeast Arabian Sea.

This formation ran across Maharashtra, Karnataka and Kerala, with southerlies from southeast Arabian Sea and southeasterlies from southwest Bay of Bengal dumping moisture therein.

Satellite imagery on Friday morning showed the presence of convective (rain-bearing) clouds over parts of south Chhattisgarh, Andhra Pradesh, southeast Arabian Sea, the Comorin area and west-central and south Bay of Bengal.

RAIN FORECAST

A short-term forecast said that widespread rain or thundershowers would occur over Lakshadweep, Kerala and south Karnataka until Monday.

It would be fairly widespread over Tamil Nadu and Andhra Pradesh, north Karnataka, and scattered over Andaman and Nicobar Islands where it could gather intensity later.

Scattered rain or thundershowers would occur over the Northeastern States, West Bengal, Sikkim, east Madhya Pradesh, Vidarbha, Chhattisgarh, Jharkhand and Orissa and isolated over west Madhya Pradesh.

An extended forecast valid until Wednesday next said that scattered rain or thundershowers would continue over east, northeast and south peninsular India.

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