The rain-driving low-pressure area continued to pummel Andhra Pradesh with heavy showers during the 24 hours ending Friday morning. Similar conditions are forecast to continue over the State as well as Odisha and Gangetic West Bengal for at least two more days.
India Met Department (IMD) confirmed that the system has thrown up a trough, an elongated area of low pressure lorded over by it and extending all the way to West Bengal and the North-Eastern States.
It also said that the core low-pressure system will re-curve and start to move along this trough, raining all the way up.
The IMD said the system may remain practically stationary on Saturday, before moving East-North-East along the trough.
A couple of international models indicated that the system might start losing intensity soon thereafter and merge with the trough along the East Coast. Until such time, the system would usurp whatever moisture becomes available in the Bay of Bengal and rain it down over Andhra Pradesh, Odisha and Gangetic West Bengal.
Parts of Maharashtra, Madhya Pradesh, Chhattisgarh and Jharkhand too may benefit in the process. Easterly winds from the low-pressure might interact with the flows from a persisting western disturbance over north-west India to cause the rain over Gujarat.
In fact, many places over Konkan and Goa, to the South of Gujarat, received showers during the 24 hours ending Friday morning.
The IMD said in its bulletin that the North-East Monsoon has been vigorous over coastal Andhra Pradesh and active over Rayalaseema and Kerala until Friday morning.
Meanwhile, the well-marked low pressure area lay parked over Telangana and adjoining areas of Coastal Andhra Pradesh and Rayalaseema on Friday afternoon.
A weather warning said heavy to very heavy rainfall, extremely heavy at times, would lash Coastal Andhra Pradesh.