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The 24 hours ending Monday morning saw heavy to very heavy rainfall being over North-East and adjoining East India as the laggard low-pressure area over North-West Bay of Bengal and adjoining Odisha coast held on gamely for the third day.
Areas benefiting from the overnight rainfall are Arunachal Pradesh, Odisha, Assam, Meghalaya, East Madhya Pradesh, Chhattisgarh and Coastal Andhra Pradesh. Some of these have been nursing a deficit from the South-West monsoon that official drew to a close on September 30.
Also read: IMD issues depression watch over Bay of Bengal
Stations recording significant rainfall (in cm) are: Kendrapara-15; Tuting-13; Baghmara-10; Nawapara and Kondagaon-9 each; Koraput, Malkangiri, Rayagada, Srikakulam, Jashpur, Singrauli, Kokrajhar and Dhemaji-8 each; and Cuttack and Jagatsinghpur-7 each.
Gradual progress to N-E monsoon
Meanwhile, a new low-pressure likely forming over the Andaman Sea and adjoining East-Central Bay by Friday would scale up rainfall yet again over Odisha, and Coastal Andhra Pradesh from October 11 to 13, an India Meteorological Department (IMD) update said.
Expected to become a depression, it would trigger isolated to scattered rain over parts of North-East, East and Central India; the Andaman & Nicobar Islands; the South Peninsula; and along the West Coast. This could gradually set the stage for the North-East monsoon to announce the arrival.
Various global model forecasts suggest that the moderate to locally heavy rain over Peninsular India (except most of Kerala and Tamil Nadu) until October 13 may suddenly turn heavier during the ten days from October 14 to 23, likely due to the arrival of the North-East monsoon.
Night temperatures dip
Even during the latter period, rains are expected to be heavier over Central and North Peninsula (Madhya Pradesh, Maharashtra and Andhra Pradesh) while being above normal over Karnataka, Tamil Nadu and Kerala, save the extreme southern parts of the latter two states.
Also read: Monsoon third-best in 30 years despite a truant July, says IMD
As expected, night temperatures fell appreciably below normal (by -3.1°C to -5.0°C) over Haryana, Chandigarh and Delhi; and below normal (-1.6°C to -3.0°C) over Jammu & Kashmir, Ladakh, West Uttar Pradesh, West Madhya Pradesh, Vidarbha, Tamil Nadu and Puducherry.
The lowest minimum temperature of 16.4°C was reported at Narnaul (Haryana) over the plains of the country on Sunday night. Temperatures fall basically because of lack clouds from the withdrawal of the South-West monsoon and cool air ingress from across the international border.
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