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A day after the north-east monsoon drew to a close, rains suddenly erupted over parts of largely arid Andhra Pradesh and neighbouring Odisha.
This came about as a trough in easterlies extended stay across south Andhra Pradesh to Meghalaya through Odisha and Gangetic West Bengal.
CYCLONIC WHIRLS
In fact, the trough featured two embedded upper air cyclonic circulations over Bihar and adjoining Uttar Pradesh and over Meghalaya.
Moisture-laden easterlies becoming southeasterlies and blowing in from the Bay of Bengal found a safe haven in the trough to rain it down over land, even copiously at some places in n Andhra Pradesh.
An update by India Meteorological Department (IMD) said that the last 24 hours ending Wednesday morning saw rains lash many places over Orissa and north coastal Andhra Pradesh.
Part of West Bengal, Sikkim and the North-eastern States to the east and even Tamil Nadu and Kerala to the southern end of the trough experienced rainfall.
MAY PERSIST
Forecasts by international agencies suggested these occasional rains may interact with incoming western disturbances to come down over the country's entire eastern quadrant.
Chances are that these rains could keep this region wet from time to time right until the last week of the month.
The IMD has already spoken about the arrival of a western disturbance into the northwest by Saturday.
Meanwhile, biting cold prevailed over parts of northwest India overnight on Wednesday morning.
BITING COLD
The minimum temperatures are below normal by 4 to 6 deg Celsius over parts of Maharashtra, north-west and adjoining central India.
They were lower by 2 to 3 deg Celsius over rest parts of north-west, west and central India and east India.
The lowest minimum of 0.4 deg Celsius has been recorded at Amritsar in the plains of the country.
A weather warning said that dense fog would reduce to 200 metre or less in morning hours over parts of east Uttar Pradesh and Bihar during the next two days.
Cold wave along with ground frost conditions would occur over some parts of Punjab, Haryana, north Rajasthan and west Uttar Pradesh.
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