Sriganganagar in extreme west Rajasthan recorded the highest maximum temperature of 45.4 deg Celsius during the 24 hours ending on Wednesday morning, an India Meteorological Department (IMD) update said.

But this is likely to get doused over the next day or two as an incoming western disturbance, located to north Pakistan and adjoining northeast Afghanistan, envelopes the region.

REPEAT SYSTEM

The entourage is also accompanied by an upper air cyclonic circulation that lay over south Pakistan by Wednesday evening. They would likely be seen acting in concert to moderate the heating pattern in the region.

Even before the duo can cross the border into the northwest, the IMD has spoken about the possibility of a follow-up western system making its way into the region by Monday next.

The impact of these back-to-back westerly systems would need to be closely monitored for any likely impact on the build-up to the monsoon.

Sustained heating of the northwest region has a major influence on the setting up of the ideal pressure gradient for the system to march up along the west coast.

FALLING MERCURY

Meanwhile, the IMD expects a decrease in maximum temperatures by the order of 2-3 deg Celsius over northwest, west and central India until the weekend.

During the last 24 hours, though, maximum temperatures were above normal by 2-3 deg Celsius over parts of northwest India.

Fairly widespread rain or thundershowers was reported from the Andaman and Nicobar Islands, West Bengal, Sikkim and the Northeastern States as the pre-monsoon season prospered.

The rains were scattered over Kerala and Tamil Nadu and isolated over north Rajasthan, Bihar, Jharkhand, north coastal Andhra Pradesh, Rayalaseema and south interior Karnataka.

Satellite imagery on Wednesday afternoon showed the presence of convective clouds standing tall over parts of southwest and east-central Bay of Bengal, south Andaman Sea and southeast Arabian Sea.

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