a statement issued by the National Weather Service that flash flooding has occurred or is imminent
Issued by the National Weather Service to warn citizens that flash flooding has been reported or is imminent, and to take necessary precautions to protect lives and property.
Issued to inform the public, emergency management, and other cooperating agencies that flash flooding is in progress, imminent, or highly likely.
A flash flood warning is a public warning issued by local NWS offices. It is site specific, focusing on communities, streams or areas where flooding is imminent or in progress. Persons in the warning area shall be advised to take necessary precautions immediately. Larger, main stem rivers usually are not included in Flash Flood products.
This warning signifies a short duration of intense flooding of counties, communities, streams, or urban areas with high peak rate of flow. Flash floods may result from such things as torrential downpours, dam breaks, or ice jam breaks. They are issued by the local National Weather Service Office for 4 hours or less. Since flash flooding can occur in severe thunderstorms, this type of warning can be combined with either a Tornado Warning or a Severe Thunderstorm Warning.
A flash flood is occurring or imminent. Go to higher ground! Stay away from small streams, creeks, and storm drains
a flood warning issued for life and/or property threatening flooding that will occur within 6 hours. It could be issued for rural or urban areas as well as for areas along the major rivers. Very heavy rain in a short period of time can lead to flash flooding, depending on local terrain, ground cover, degree of urbanization, amount of man-made changes to the natural river banks, and initial ground or river condition. Dam breaks or ice jams can also create flash flooding.
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.