What is a flash flood?

July 15, 2008 6:15:03 AM PDT
article| David Murphy| A Flash Flood is a sudden rise in water that quickly overtakes areas where water is not usually present. The most common source of flash flooding is a heavy rain or series of drenching thunderstorms that quickly raise creek and stream levels. Storm drains may also back up suddenly during a flash flood. Flash floods are most common when creek and stream levels are already running high from recent rain storms or snow melt. Flash floods can occur over the space of only a few minutes or less. The water rises rapidly, filling roadways and disabling cars. Pedestrians are also threatened and sometimes, property is quickly flooded.