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A weather warning issued by the India Meteorological Department (IMD) this (Friday) morning has continued to train its focus on east and northeast India. As per this, isolated heavy rainfall is likely over Assam, Meghalaya and Arunachal Pradesh during the next two days.
But, significantly, the IMD pointed towards a ‘limb’ of unstable weather venturing south-southwest along the eastern coast of India and into the peninsula superimposed along the contours of a trough.
This trough in turn extended from a weather-driving upper air cyclonic circulation that had shifted place overnight from over Bihar and adjoining Jharkhand and West Bengal to Assam and neighbourhood.
This morning, the trough probed further south to south Karnataka across West Bengal, Orissa and Telangana, potentially opening up the skies for some associated weather. The upper air cyclonic circulation over south Andaman Sea too persisted.
A short-term forecast by the IMD said that fairly widespread rain or thundershowers would occur over the Northeastern States, sub-Himalayan West Bengal and Sikkim until Monday.
Scattered rain or thundershowers has also been forecast over Andaman and Nicobar Islands and isolated over Kerala, south Karnataka and Lakshadweep. It would be isolated over Bihar, Jharkhand, Gangetic West Bengal, coastal Andhra Pradesh and Orissa.
Fairly widespread rainfall occurred over northeastern states and isolated over sub-Himalayan West Bengal, Sikkim and Andaman and Nicobar Islands on Thursday.
Satellite pictures early on Friday morning showed the presence of convective clouds over parts of west Jammu and Kashmir and south Andaman Sea.
Low to medium clouds are seen over parts of the rest of the western Himalayan region, north Rajasthan, Haryana, Uttar Pradesh, Bihar, Jharkhand, Sikkim, the Northeastern States, south Karnataka and Kerala.
An incoming western disturbance lain over north Pakistan and neighbourhood in the morning is expected to affect the western Himalayan region during the next three days.
The IMD has forecast fairly widespread rain or snow over Jammu and Kashmir and scattered over Himachal Pradesh and Uttarakhand until Sunday. Isolated dust storm or thunderstorm would occur over Rajasthan, Punjab and Haryana until Saturday morning.
On Thursday, maximum temperatures were below normal by 2 to 5 deg Celsius over parts of east Bihar, West Bengal and Sikkim and by 4 to 8 deg Celsius over many parts of the Northeastern States. They were near normal over remaining parts of the country.
The highest maximum temperature of 41.0 deg Celsius was recorded at Bhira in Maharashtra. A slight rise is indicated in maximum temperatures over northwest and adjoining central India until Sunday.
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