Homeowners' policies do not cover flooding. Check your homeowner's or renter's insurance. For information, call your local National Weather Service office, Red Cross chapter, or local emergency management agency. Choose several places.a friend's home or a motel in another town, or a shelter. Identify where to go if told to evacuate. Source: National Weather Service PLAN AHEAD: Subsequent flash flooding can occur downstream if the obstruction should suddenly release. Water held back by the ice jam or debris dam can cause flooding upstream.
Occasionally, floating debris or ice can accumulate at a natural or man-made obstruction and restrict the flow of water. Most flash flooding is caused by slow-moving thunderstorms, thunderstorms repeatedly moving over the same area, or heavy rains from hurricanes and tropical storms. Most flood deaths are due to FLASH FLOODS. You will not always have a warning that these deadly, sudden floods are coming. Furthermore, flash flood-producing rains can also trigger catastrophic mud slides. Rapidly rising water can reach heights of 30 feet or more. Flash floods can roll boulders, tear out trees, destroy buildings and bridges, and scour out new channels. Topography, soil conditions, and ground cover also play an important role.įlash floods occur within a few minutes or hours of excessive rainfall, a dam or levee failure, or a sudden release of water held by an ice jam. Intensity is the rate of rainfall, and duration is how long the rain lasts.
The two key elements are rainfall intensity and duration. Several factors contribute to flash flooding. DOC/NOAA Flash floods #1 weather-related killer in the United States! How do flash floods occur? Flash floods and floods.the Awesome Power! A PREPAREDNESS GUIDE U.S.
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