"Last time the wind speed was around 60-70 kmph".
At least 39 people were killed and many more were injured as storms and lightning also struck large swathes in other parts of the country.
The hills of Himachal Pradesh will get more thunderstorms accompanying squalls for the next two days, the Met Office said on Sunday.
A similar unseasonal powerful dust storm and thundershowers a week ago left more than 120 people dead and another 200 injured in five Indian states.
Eighty-seven of those killed were in the worst-hit northern Uttar Pradesh state, where the storms have affected the lives of more than 100 million residents, who also have lost cattle and crops.
UP was the worst affected, accounting for 80 deaths, majority in Agra district in the western part of the state. The dust storm interrupted a programme that Delhi Chief Minister Arvind Kejriwal was to attend at IP Extension. One person was killed and four others were injured after a tree fell on them near Lal Kuan Shiv temple in Ghaziabad. The deaths were reported in Uttar Pradesh, West Bengal and Andhra Pradesh.
Saturday was the season's hottest day, with maximum temperature of 42.2 degrees Celsius.
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Reports of disruptions in power supply were received from parts of Najafgarh, Jafarabad, Vasant Kunj, Seelampur and Shahstri Park, a BSES spokesperson said, adding operations and maintenance teams have been put on a high-alert to take care of any contingency.
# 05:04 PM: Haryana: Skies in Faridabad turn dark as strong winds and dust storm hit the region.
The strong winds knocked down almost 200 trees in the city.
Operations at the Delhi airport came to a halt due to the dust storm.
"This was necessitated due to falling of a tree on OHE wires between Okhla and Jasola stations due to the thunderstorm". Moreover, an upper air cyclonic circulation is seen over West Uttar Pradesh from which an upper air trough is running across Delhi up to Nagaland region.
Several areas in Gurugram and east, west and outer Delhi saw outages that ran up to five hours, officials said.
"A cyclonic circulation formed near Haryana and north Rajasthan along with the western disturbance".