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Tuesday’s (yesterday) western disturbance over north Pakistan and adjoining Jammu and Kashmir has swiftly crossed over into Jammu and Kashmir, an India Meteorological Department (IMD) update this (Wednesday) morning said.
It would affect western Himalayan region and adjoining plains until the day after, following which a third back-to-back westerly system would drift in as early as by Saturday.
International forecasting agencies, had in their advance predictions, signalled that northwest India would witness westerly activity through the entire week but without indicating the frequency of arrivals.
Overnight passage of the westerly system into northwest India also dragged in an accompanying upper air cyclonic circulation located to the immediate lower latitudes, which has parked itself over south Punjab and adjoining Haryana.
The weather-maker upper air trough from east India seen last evening originating from sub-Himalayan West Bengal and Sikkim to south Tamil Nadu has shifted base and in fact split up into two.
The first one now runs from Assam to north Orissa while the other looked down from madhya Maharashtra to south Tamil Nadu.
Fairly widespread rain or snow was reported overnight from over Jammu and Kashmir, an IMD update said.
Scattered rainfall broke out over Orissa and Andaman and Nicobar Islands and isolated over Jharkhand, Chhattisgarh, Telangana and Kerala.
Satellite imagery early this morning shows the presence of convective rain-bearing) clouds over parts of Jammu and Kashmir and Himachal Pradesh.
Low to medium clouds are seen over parts of rest western Himalayan region, west Rajasthan, Punjab, Madhya Pradesh, northeast and south peninsular India.
A weather warning issued by the IMD said that isolated dust storms or thunderstorms would occur over Punjab, Haryana, Delhi, west Uttar Pradesh and north Rajasthan until Thursday morning.
A short-term forecast said that fairly widespread rain or snow would occur over Jammu and Kashmir and Himachal Pradesh and scattered over Uttarakhand until Thursday morning.
Scattered rain or thundershowers would occur over the Northeastern States. Isolated rain or thundershowers would occur over Orissa, West Bengal, Sikkim, south Chhattisgarh and Maharashtra.
Isolated rain or thundershowers would also occur over south peninsular India and Andaman and Nicobar Islands.
Isolated dust storms or thunderstorms would occur over Punjab, Haryana, Delhi, north Rajasthan and west Uttar Pradesh.
An extended forecast valid until Sunday said that scattered rain or snow would occur over western Himalayan region and isolated dust storm or thunderstorm over adjoining plains of northwest India.
Scattered rain or thundershowers has also been forecast over the Northeastern States while it would be isolated over east and peninsular India.
Meanwhile, maximum temperatures rose by 2-3 degree Celsius over parts of Haryana, Delhi, west Uttar Pradesh and sub-Himalayan West Bengal and Sikkim on Tuesday (yesterday).
They fell by 2-4 degree Celsius over parts of Jammu and Kashmir, Himachal Pradesh, east Madhya Pradesh, Chhattisgarh, Gangetic West Bengal, Orissa and coastal Andhra Pradesh.
They were below normal by 2-6 degree Celsius over West Bengal and Sikkim and by 2-4 degree Celsius over east Uttar Pradesh, east Madhya Pradesh, Chhattisgarh, Jharkhand, Orissa and Vidarbha and near normal over rest of the country.
The highest maximum temperature of 40.0 degree Celsius was recorded at Malegaon in Maharashtra.
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