Thursday, 08.03.2021: A fresh Western Disturbance (WD) is likely to affect the Western Himalayan Region (WHR) from April 10. Under its influence, isolated to scattered rainfall/snowfall with thunderstorms and lightning are expected over Jammu & Kashmir, Ladakh, Himachal Pradesh, and Uttarkhand between April 10 and 12.
Along with a cyclonic circulation, a trough in the westerlies, roughly along longitude 85°E to the north of latitude 22°N at 2.1 km above mean sea level, lies over Jharkhand and adjoining North Chhattisgarh. These systems will be supported by moisture incursion from the Bay of Bengal in lower tropospheric levels and under their influence, the India Meteorological Department (IMD) has forecast:
i) Scattered to widespread rainfall with thunderstorms, lightning and gusty winds (speed reaching 30-40 km/ph) are expected over Northeast India between April 8 and 12. Moreover, thunderstorms, lightning & squall(speed reaching 50-60 km/ph) are likely over Assam and Meghalaya on April 8 and 9, and over Nagaland, Manipur, Mizoram and Tripura on April 9. Isolated heavy rainfall is also forecast over Arunachal Pradesh on April 9 and 10.
ii) Isolated to scattered rainfall with thunderstorms, lightning and gusty winds (speed reaching 30-40 km/ph) are expected over East and adjoining Central India between April 8 and 12. Isolated hailstorms are also likely over Chhattisgarh on April 10.
Further, heatwave conditions are very likely in isolated pockets over east Madhya Pradesh and Jharkhand during the next 24 hours.
Most areas of the Indian subcontinent will be covered with vast high pressure, and hence, sunny weather is expected. Also, daytime solar radiation will be stronger, causing maximum temperatures to exceed 40° Celsius in several areas (excluding the Malabar Coast and the mountains of the Northeast, as both are in local low pressures).
Source: The Weather Channel