Reasons—Monsoon trough is running near its normal position; an upper air cyclonic circulation is prevailing over Gangetic west Bengal and adjoining Bangladesh; another upper air cyclonic circulation exists over southwest Uttar Pradesh and neighbourhood; and a fresh low-pressure area is likely to form over northwest Bay of Bengal off Odisha-West Bengal coasts around August 25
Intense to very intense convection is currently prevailing over many parts of the country—west Uttarakhand, south Haryana adjoining Delhi, Uttar Pradesh, east Rajasthan, Madhya Pradesh, Chhattisgarh, Odisha, north coastal Andhra Pradesh, Jharkhand, south west Bihar, West Bengal and north Bay—the IMD today said predicting increase in rain activity over many parts of northwestern, western, central and eastern coastal states in the coming week
Reasons
The Monsoon trough is running near its normal position; an upper air cyclonic circulation is there over Gangetic west Bengal and adjoining Bangladesh; another upper air cyclonic circulation exists over southwest Uttar Pradesh and neighbourhood; and a fresh low-pressure area is likely to form over northwest Bay of Bengal off Odisha-West Bengal coasts around August 25.
There has been a rapid revival of Monsoon from August 14 due to back-to-back Low Pressure System formation over Bay of Bengal and their west-northwest movements. The monsoon trough shifted to south and it was south of its normal position in most dates of the last week, resulting in active monsoon conditions over central and south peninsular India during the week.
The weekly cumulative rainfall over most of the meteorological subdivisions of central and south peninsular India was normal to above normal rainfall during the week ending August 20
All-India weekly rainfall departure was 22% above than the long period average.
Fishermen’ advisory
Fishermen are advised not to venture into several areas till August 27
In the Arabian Sea, they include along and off the Somalia, Oman coasts and adjoining sea areas; over some parts of central Arabian Sea, southwest, northeast Arabian Sea; over few parts of northwest Arabian Sea; along and off south Gujarat coasts; off Maharashtra coasts and Goa, Karnataka and north Kerala coasts.
In the Bay of Bengal, they include along and off Odisha, West Bengal and north Bay of Bengal till August 24 and some parts of west-central Bay on August 26.
