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Flash Flood Threat is the amount of rainfall of a given duration in excess of the corresponding Flash Flood Guidance value. The flash flood threat when used with existing or forecast rainfall then is an index that provides an indication of areas where flooding is imminent or occurring and where immediate action is or will be shortly needed.
One is a flash flood watch, which means that conditions are favorable for flash flooding, and the other is a flash flood warning, meaning that a flash flood is occurring or one will occur imminently and is usually issued when there are strong weather radar echoes for an area that is prone to flash flooding. [2]
PDS flash flood warnings are issued when there is a higher than normal risk of widespread, life-threatening flash flooding. Like PDS flash flood watches, they are issued by the local NWS Weather Forecast Offices, rather than the Storm Prediction Center.
The powerful currents of flash floods can carry drivers off the road. Driving through deep water can also damage a vehicle's mechanical and electrical systems. What is hydroplaning?
Flooding is a threat across the United States year-round. In the first few weeks of July, the dangers of flash floods have plagued the Northeast, including Vermont's worst flood in over 100 years ...
The flash flood warning for Maui has expired. 9 a.m. National Weather Service forecasters said heavy rain over windward Oahu at a rate of as much as 3 inches per hour “may quickly lead to runoff ...
A flash flood is a rapid flooding of low-lying areas: washes, rivers, dry lakes and depressions. It may be caused by heavy rain associated with a severe thunderstorm , hurricane , or tropical storm , or by meltwater from ice and snow .
NOAA’s Weather Prediction Center has posted a Level 2 out of 4 flash flood risk for the central Gulf Coast on Monday, including New Orleans. Download The Free Fox Weather App
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