New Delhi, Jan. 2 -- The season's first heavy rains and snowfall ended a prolonged dry spell but triggered flash floods in several areas of Afghanistan, killing at least 17 people and injuring 11 others, a spokesman for Afghanistan's national disaster management authority said Thursday.

The dead included five members of a family in a property where the roof collapsed on Thursday in Kabkan, a district in the Herat province, according to Mohammad Yousaf Saeedi, spokesman for the Herat governor. Two of the victims were children.

Most of the casualties have occurred since Monday in districts hit by flooding, and the severe weather also disrupted daily life across central, northern, southern, and western regions, according to Mohammad Yousaf...