What were some of the worst flash floods in history?
The worst flood in U.S. history resulted from a dam break upstream from Johnstown, Pennsylvania, on May 31, 1889. Although ample warnings were given, they were disregarded by many townspeople, and 2,200 residents died.
On February 26, 1972, the Buffalo Creek Dam located in southern West Virginia collapsed sending a black wave of water through one coal mining town after another, and killing more than 100 people. Over 4,000 people were left homeless.
A storm in northern Colorado dumped a foot of rain into the Big Thompson Canyon producing a raging torrent of water 19 feet high and resulting in 145 deaths.
What can I do to be safe in a flood?
When thunderstorms are in the area, stay alert for rapidly changing conditions. When you approach a flooded road, TURN AROUND AND GO ANOTHER WAY! Be aware of how close you are to streams and dams.
Does a 100-year flood happen once in 100 years?
The 100-year flood is a climatic average, that is, there is a one percent chance a 100-year flood will happen in any given year.
If I drive a pickup or a large SUV, why can't I drive through flood water?
Two feet of fast moving water can sweep most any vehicle off a roadway. Basides, you can't determine the condition of the road bed under the water.
Don't most flash floods occur during the late afternoon or early evening?
Flash floods can occur at any time of day and at night after a significant rain event.
What is a flash flood watch?
A flash flood watch is issued by the National Weather Service when conditions are right for possible flooding within a specific area.
What should I do if my family is camping in the mountains and thunderstorms threaten?
First of all, never, ever, set up your tent or camper by a stream bed - even a dry one - when you camp in the mountains! Be aware that flash floods can occur from distant thunderstorms well upstream from where you are. The most important safety tip is to climb to higher ground and safety as quickly as you can when you sense the danger, getting as high above the stream bed or roadway as possible or out of the canyon and low-lying areas.
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