India Meteorological Department (IMD) has said that a western disturbance would stray into northwest India from Thursday onwards.
But the system is not seen drastically changing the weather parameters over the region, which would continue to witness mainly dry weather.
Isolated rain or thundershowers would occur over Jammu and Kashmir from Friday onwards.
Strong surface winds are expected to prevail over Gujarat, Rajasthan and the Indo-Gangetic plains during this period.
Meanwhile on Tuesday, an upper air cyclonic circulation persisted over northwest Madhya Pradesh and neighbourhood.
This, in turn, triggered the formation of a southward-bound and weather-making trough that passed through Marathwada, interior Karnataka and Tamil Nadu.
The trough then “telescoped” into a counterpart upper air cyclonic circulation over southwest Bay of Bengal.
A third upper air cyclonic circulation was on view over Gangetic West Bengal, presiding over local weather.
A weather warning from IMD said that isolated thunder squalls would break out over Bihar, Jharkhand, Orissa, West Bengal, Sikkim and the Northeastern States until Thursday.
The 24 hours ending Tuesday morning saw fairly widespread rain or thundershowers break out over Gangetic West Bengal, Orissa, Meghalaya, Kerala and Tamil Nadu.
It was scattered over sub-Himalayan West Bengal, Sikkim, east Uttar Pradesh, Bihar, Chhattisgarh, south Karnataka and the Andaman and Nicobar Islands.
It was isolated over Jharkhand, Arunachal Pradesh, Assam, Telangana and north coastal Andhra Pradesh.
Satellite imagery in the afternoon indicated the presence of convective (rain-triggering) clouds over parts of south and central Bay of Bengal, southeast Arabian Sea and the Comorin area.
A short-term outlook valid until Friday said that fairly widespread rain or thundershowers would unfold over coastal Karnataka, Kerala, Tamil Nadu and Andaman and Nicobar Islands.
However, the rainfall over Tamil Nadu would weaken in intensity from Wednesday as the clouding spreads out in an east-to-northeast direction into the sea.
Scattered rain or thundershowers is likely over Lakshadweep and south interior Karnataka.
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