Monsoon extends ‘dry run’ over interior India

VINSON KURIAN, THE HINDU BUSINESS LINE
THIRUVANANTHAPURAM, JUNE 26:
There is no progress on the monsoon coverage this morning save for the persisting copybook-style session over northeast India.

This is expected to continue as a causative north-south trough hung from sub-Himalayan West Bengal to North Bay of Bengal.

MOISTURE CONDUIT

The trough serves as a conduit for the moisture whipped up into the air by a long-persisting cyclonic circulation.

This moisture gets lifted up by the mountainous terrain, get cooled before being dumped on ground in the form of heavy to extremely heavy rainfall.

Meanwhile, a western disturbance with a potent induced cyclonic circulation has chugged its way into north Pakistan and adjoining Jammu and Kashmir.

The induced cyclonic circulation is situated not far off to the southwest – over central Pakistan and adjoining Punjab.

WESTERN DISTURBANCE

The combine is expected to bring some badly needed showers into northwest India, an India Meteorological Department (IMD) update said this morning.

Rain or thundershowers has been forecast at one or two places over Punjab, Haryana, Uttar Pradesh, east Madhya Pradesh, Gujarat, Madhya Maharashtra, Marathawada and Vidarbha.

In the normal course, these western disturbances interact with monsoon easterlies from the Bay of Bengal and bring copious rains over the plains to bring the monsoon.

But it would be a solo act at least this time round, since there is no expectation of the easterly monsoon flows getting established over the region anytime soon.

SUBDUED RAIN

In fact, the IMD saw largely subdued rain activity persisting over northwest India and adjoining central India until the first three days of July.

Rainfall would be confined to the west coast and the Northeastern States. The wet session over east India may further scale up July 1.

Meanwhile, a warning valid for the next two days said that heavy to very heavy rainfall would occur at a few places over Assam, Meghalaya, sub-Himalayan West Bengal and Sikkim.

Heavy rainfall would also break out at one or two places over Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura and coastal Karnataka.