New Delhi, April 11 -- Several parts of Delhi witnessed a dust storm on Friday evening that led to trees falling in some areas and residents shutting windows to prevent dust from entering their houses.

Traffic was also disrupted as trees or their branches fell. Flight operations were also impacted in parts of northern India. Delhi had witnessed a dust storm on Thursday also.

Meanwhile, Indian Meteorological Department had issued an Orange Alert for thunderstorms, lightning, and hailstorms in four districts of Himachal Pradesh, while Yellow Alerts have been issued for four other districts.

According to weather reports, Chamba, Kangra, Kullu, Lahaul-Spiti, Mandi, Shimla, and Hamirpur witnessed thunderstorms and lightning accompanied by l...