Punjab and Haryana in the region that also lead in agricultural produce have been devoid of any good showers this monsoon and show up at the bottom of the deficient states within northwest India at 68% and 69%. This fact along with a largely bad monsoon over most of the country has not gone unnoticed and has raised quite a concern with policy makers and economy analysts.
But a movement in the monsoon trough (a region of intensified monsoon winds, mostly moisture bearing) towards these parts may cheer things up. The trough is expected to pass through Delhi, Haryana and Punjab and dispense light to moderate (in the range of 5 to 25 millimeters) showers in these parts during the next twenty four to forty eight while it reaches the Himalayan foothills.
Rainfall is expected to start tomorrow onwards over northwest plains while the spike in rainfall is expected from night till morning hours. Delhi that is a gateway to the northwest would be the first welcome these showers.
The trough is being fed by moist southwesterly wind from the Arabian Sea as well as rain bearing easterly winds from the Bay of Bengal. These winds are also dishing out some rainfall on its way from the seas.
Gujarat, east Rajasthan, Orissa, Vidarbha, Jharkhand and Chhattisgarh would witness rain or thundershowers at a few places.
A cyclonic circulation over east Uttar Pradesh has merged with the monsoon trough in the middle and harbinger robust showers over east & central Uttar Pradesh and east Madhya Pradesh for the next two days. The rainfall would move along the trough and engulf east India during the next forty eight hours.
The surge over west coast has weakened leading to a decrease in rainfall here. Turn of winds to westerly/northwesterly along the west coast and south peninsula would cut off the erstwhile moisture feed.
West Rajasthan and Tamil Nadu will remain almost dry.