ESS124
Prof.
Jin-Yi Yu
Three Types of Floods
•Flash floods: occur rapidly with little or no warning and if often caused by slow-moving thunderstorms.
•Widespread floods: occur when a large amount of rain falls over a watershed for many days.
•Coastal floods: occur when a rise in the ocean surface due to storm surge develops during hurricanes and strong extratropical cyclones.
• It is possible, and not uncommon, for a
particular flood event to be
comprised of a combination of these flood types.