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Flash Flooding

Flash Flooding

Turn Around...Don't Drown

A flash flood is a rapid rise of water along a stream or in a low-lying urban area. Flash flooding can result from slow-moving thunderstorms, from numerous thunderstorms which develop repeatedly over the same area, or from heavy rains associated with tropical cyclones. These floods may develop within minutes, depending on the intensity of the rainfall, the topography, soil conditions, and ground cover.

Flash Flood Watch

  • Be prepared!
  • There is a possibility of a flash flood.
  • A flash flood may occur within the next several hours or days.

Flash Flood Warning

  • TAKE ACTION!
  • A dangerous, life-threatening flood is occurring or about to occur.
  • A flash flood is occurring or about to occur.

Flooding Safety Tips:

  • Keep alert for signs of heavy rain (thunder and lightning).
  • Watch for rising water levels.
  • Know where high ground is and move quickly if you see or hear rapidly rising water.
  • Do not attempt to walk, swim, play or drive in flood waters. You may not be able to see how fast the flood water is moving or see holes or submerged debris.
  • Avoid setting up a campsite near streams or low areas where flooding is likely.
  • Listen to weather forecasts and keep away from streams if thunderstorms have occurred or have been predicted near your location.
  • When thunderstorms are in the area, stay alert for rapidly changing conditions.
  • Stay away from high water, storm drains, ditches, ravines, viaducts, or culverts.
If water is moving swiftly, even water six inches deep can knock you off your feet. Many people are swept away while wading through flood waters.