What is a flash flood watch or warning? Here's what you need to know about this deadly weather hazard
Published
Flash floods are the most dangerous kind of floods because they combine the destructive power of a flood with incredible speed.
Published
Flash floods are the most dangerous kind of floods because they combine the destructive power of a flood with incredible speed.
Watch VideoEmergency officials in Sydney are warning hundreds of thousands of people to evacuate as heavy rains are flooding a..