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Strong westerly winds were shown tearing into the top of the clouding kicked up by a persisting upper air cyclonic circulation over south Bay of Bengal.
Some of the clouds are being blown away north-northeast while a chunk has headed southwest and set up a perch over the west coast of Sri Lanka.
CYCLONIC WHIRLS
Another chunk, as big in size as the island nation, was waiting its turn in the southwest Bay of Bengal (just northeast of Sri Lanka).
Meanwhile, the other upper air cyclonic circulation over Assam and neighbourhood has also been persisting.
Saturday's upper air trough to the east of the country has descended to the lower levels of the atmosphere and was shown running down from Gangetic West Bengal to Telangana through Orissa.
This continues to be a potential weather destabilising feature what with lower atmosphere pressure, rising motion of air, convection and occasional precipitation.
THUNDERSHOWERS
Satellite imagery on Sunday afternoon showed the presence of convective (rain-bearing) clouds over parts of south Bay of Bengal and Andaman Sea.
An India Meteorological Department (IMD) outlook valid until Wednesday said that widespread rain or thundershowers would occur over Andaman and Nicobar Islands.
Scattered rain or thundershowers has been forecast over the Northeastern States, West Bengal and Sikkim.
It would be isolated over Orissa, Jharkhand, Chhattisgarh, coastal Andhra Pradesh, coastal Karnataka, Tamil Nadu, Kerala and Lakshadweep on Monday and Tuesday.
The IMD has also indicated the possibility of a gradual rise by 1-2 deg Celsius in maximum and minimum temperatures over many parts of the country during this period.
DISPARATE WEATHER
An extended forecast until Friday said that the fairly widespread rain or thundershowers would continue over Andaman and Nicobar Islands.
Scattered rain or snowfall is expected to unfold over Jammu and Kashmir while it would be isolated over Himachal Pradesh and Uttarakhand.
An IMD update for the last 24 hours ending on Sunday morning said that isolated rain or snowfall occurred over Himachal Pradesh and Uttarakhand.
Widespread rainfall occurred over Andaman and Nicobar Islands, scattered over Arunachal Pradesh and Assam and isolated over Orissa, Kerala and Tamil Nadu.
MERCURY LEVEL
Minimum temperatures were below normal by 3-5 deg Celsius over parts of Madhya Pradesh and by 2-3 deg Celsius over Rajasthan, Haryana, west Uttar Pradesh, Gangetic West Bengal, Maharashtra and Chhattisgarh. The lowest minimum temperature of 9.8 deg Celsius was recorded at Adampur in Punjab.
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