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Flood watch FLA: Issued as either a Flood Watch or a River Flood Watch. Indicates that flooding is possible in and close to the watch area. Those in the affected area are urged to be ready to take action if a flood warning is issued or flooding is observed. Flood warning FLW: Issued as either a Flood Warning or a River Flood Warning.
A river flood advisory is issued by the National Weather Service of the United States when minor flooding at formal forecast points with river gaging sites and established flood stages is possible. Flooding may have many causes, such as heavy rain in the vicinity of the river, melting snow or ice jams .
The following is an example of a river flood watch issued by the National Weather Service office in Seattle, Washington. [2]ZCZC SEAFFASEW WGUS66 KSEW 151139 URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE SEATTLE WA 339 AM PST THU NOV 15 2007 ...THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A FLOOD WATCH FOR THE FOLLOWING RIVERS IN WESTERN WASHINGTON...
Heavy rain caused widespread flooding along the Snoqualmie River in Washington state on Tuesday, October 22, local media reported.A flood warning was extended until the evening of Wednesday ...
More than 530,000 homes and businesses in Washington, southwest Oregon and Northern California were without power, according to Poweroutage.us, down from more than 600,000 earlier.
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 ...
Dec. 4—Rain, heavy rain, heavy rain, rain, rain, rain, rain and rain. That's the National Weather Service's forecast for Monday to Thursday, day and night, out of the Chehalis-Centralia Airport.
A watch does not mean that flooding is occurring, only that weather conditions have created or will create a significant risk for it. If flooding occurs, a flood warning or flash flood warning would be issued, and immediate action should be taken. A flood warning or flash flood warning is issued when flooding is imminent or already occurring.