Quick Answer
Watch out for heavy rainfall, rapid rises in water levels, and decreased water clarity in nearby streams, rivers, or low-lying areas. Be cautious of sudden changes in water flow and listen for reports of flash flood warnings in your area. A flash flood can occur within minutes to hours of heavy rainfall.
Recognizing the Signs
When a flash flood warning is issued, it’s crucial to quickly identify the warning signs in your area. Heavy rainfall that exceeds 1-2 inches per hour is a significant indicator of a potential flash flood. Additionally, rapid rises in water levels, such as 1-2 feet in a matter of minutes, can signal a flash flood. Other warning signs include decreased water clarity, which can indicate the presence of sediment and debris, and a sudden increase in water flow, such as a rise in the water level of 1-3 feet in a matter of minutes.
Evacuation and Safety
If you’re in a low-lying area or near a stream, river, or lake, be prepared to evacuate immediately if a flash flood warning is issued. Move to higher ground, at least 10-15 feet above the estimated flood level. Avoid walking or driving through floodwaters, as they can be deceptively deep and conceal hidden obstacles. If you’re in a vehicle, do not attempt to drive through flooded roads, as even 6 inches of water can cause a vehicle to lose traction and stall.
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