"Thunderstorms, accompanied by winds, are also very likely at isolated places over Punjab, Haryana, Chandigarh, Delhi, west UP, Bihar, Telangana, Karnataka, Tamil Nadu, and Kerala", said the IMD advisory.
Reports pouring in from Uttar Pradesh said almost 100 houses were gutted in a fire which broke out due to lightning in Sambhal. More than a 100 people died in northern India on 4 May due to intense dust storms and heavy rains.
At least 28 people were injured and around 37 houses were damaged in the hail and thunderstorm, he said.
The two deceased included a woman from Pandav Nagar and a youth from Jaitpur area, the lady reportedly died after a tree branch fell on her whereas a person in Jaitpur was hit by a cement sheet that fell on him. Four incidents of wall collapse were reported from Najafgarh, Transit Camp, Nehru Place, Mohan Garden in Uttam Nagar and Raj Nagar in Palam, said a senior officer of the Delhi Fire Service. In Jhajjar-Jind of Haryana, strong winds have wreaked havoc.
While the maximum temperature in Chandrapur shot up to 47.3 degree Celsius on Friday, mercury may hit 43 degree Celsius with heat waves spread across the National Capital region in mid of May. Humidity during the morning hours was recorded at 60%, the official added.
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A powerful dust storm accompanied by rains on Sunday evening brought down the temperature in the national capital and adjoining areas, seriously disrupting air traffic and Metro services, officials said.
Residents of Rajasthan and Uttar Pradesh can expect relief from strong, widespread thunderstorms by Wednesday but weaker thunderstorms, scattered rain and gusty winds may occur in some areas for the rest of the week.
While seven people were killed in Srikakulam district alone, two more were killed in Kadapa and three injured, they said.
India's Meteorological Department had issued a warning on Sunday before the storms hit, warning people to stay within their homes.
Uttar Pradesh bore the brunt of a thunderstorm and hail that left at least 18 people dead, while 12 people including four children were killed in West Bengal, nine in Andhra Pradesh, and two in Delhi, officials said.