Flash floods kill at least four people in the US state of Pennsylvania, as heat warnings issued for nearly a quarter of the country’s population.

Video shows how floods filled Iranian dam’s downstream with rocks in less than 20 minutes.

Flash floods have destroyed hundreds of homes in Australia’s southeast region and thousands of people have been warned to stay away from raging rivers.

The National Weather Service on Sunday issued a flash flood warning for part of northeastern Illinois including Chicago's northern metro area, after heavy rains flooded viaducts, stranded cars, and sent water surging into basements.

monsoon floods have inundated large parts of Pakistan.

Pakistan has declared a national emergency and an acute humanitarian crisis caused by record breaking monsoon rains that triggered fatal floods and landslides.

Initial estimates suggest losses from flash floods in southern Iran amount to nearly $180 million.