Flash Flood Warning
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A Flash Flood Warning is a short-fuse bulletin issued by the National Weather Service when a flash flood is present or imminent in the warning area. Flash flood warnings can be issued when the Doppler radar indicates very heavy reflectivities and hence outflow from thunderstorms, but more often are taken into account along with the current water content of the soil and other factors. Flash floods are deadly killers - flash flood warnings should therefore be treated as potentially dangerous as tornado warnings.