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Areal flood warning FLW – General or areal flooding of streets, low-lying areas, urban storm drains, creeks, and small streams in which there is a serious threat to life or property is occurring, imminent, or highly likely. Flood warnings are usually issued for flooding that occurs more than six hours after the excessive rainfall, or when ...
A flood warning is closely linked to the task of flood forecasting.The distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to make decisions about whether warnings of floods should be issued to the general public or ...
A flood warning means that flooding is occurring or will soon happen and that people need to be cautious and alert for potential dangers. A flood watch means flooding is possible in certain areas ...
A flood warning or flash flood warning is issued when flooding is imminent or already occurring. When flood warnings are issued, it means that area waterways will likely soon be in flood. [2] Not all flood watches suggest that large-scale flooding, such as during landfalling tropical cyclones, is possible.
Flood warnings are issued “when flooding is imminent or occurring” and mean you need to seek shelter and be prepared for standing water to last for days or weeks.
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A flash flood warning (SAME code: FFW) is a severe weather warning product of the National Weather Service that is issued by national weather forecasting agencies throughout the world to alert the public that a flash flood is imminent or occurring in the warned area.
A flash flood watch (SAME code: FFA; also referred as a "green box" by meteorologists) is severe weather watch product of the National Weather Service that is issued when conditions are favorable for flash flooding in flood-prone areas, usually when grounds are already saturated from recent rains, or when upcoming rains will have the potential ...