Heavy rainfall is expected to persist across parts of north India on Sunday, September 27, with the India Meteorological Department (IMD) predicting heavy to very heavy rain and isolated extremely heavy rainfall over Uttarakhand.
The weather system behind the ongoing spell is weakening as it moves north-northwestwards, but its impact is expected to keep several parts of central and northern India wet.
The IMD has also forecast thunderstorms and gusty winds in several states.
UTTARAKHAND REMAINS RAIN HOTSPOT
Uttarakhand is likely to experience the most intense rainfall on September 27, with heavy to very heavy rain and isolated extremely heavy showers expected in some areas.
The forecast comes as the hill state is already witnessing a strong spell of rainfall, with the IMD issuing similar warnings for September 26.
Neighbouring Himachal Pradesh and West Uttar Pradesh are also expected to receive heavy to very heavy rain at isolated locations.
East Uttar Pradesh, Haryana, Chandigarh, Delhi and Madhya Pradesh could also experience isolated heavy rainfall.
Isolated thunderstorms with lightning and gusty winds reaching 40-50 kmph are also likely over Haryana, Chandigarh and Delhi, Himachal Pradesh, Punjab, Uttarakhand, Madhya Pradesh, Jammu and Kashmir and West Uttar Pradesh.
East Uttar Pradesh, Rajasthan, Jharkhand and Telangana may experience thunderstorms accompanied by gusty winds of 30-40 kmph at isolated locations.
WHY IS NORTH INDIA WET EVEN WHEN MONSOON IS LEAVING?
On Saturday, a depression over northeast Madhya Pradesh and adjoining north Chhattisgarh was moving north-northwestwards.
The system was expected to move into southeast Uttar Pradesh and weaken into a well-marked low-pressure area over the next few hours.
A low-pressure system is a region where atmospheric pressure is lower than the surrounding areas and can draw moisture into the region, contributing to rainfall. Although the depression is weakening, its moisture and circulation may continue to affect rainfall farther north.
Another factor contributing to the wet conditions is a western disturbance that continues to persist over northern India.
A western disturbance is a weather system that travels eastwards through the upper atmosphere.
The rainfall is occurring even as the southwest monsoon has started withdrawing from parts of the country.
As of September 26, the IMD’s withdrawal line stretched from Gurdaspur through Chandigarh, Muzaffarnagar, Aligarh, Dholpur, Udaipur, Deesa and Naliya before reaching the Arabian Sea.
However, the monsoon has not yet withdrawn from all parts of north India, and weather systems can continue to trigger intense rainfall during this transition period.
