MONTESANO, Wash. – The National Weather Service in Seattle has issued a FLOOD WATCH for much of Western Washington, including Grays Harbor County from Thursday afternoon through Friday afternoon.
Significant rainfall is anticipated Thursday afternoon through Friday, with the heaviest rainfall expected from the Olympic range eastward. Potentially 1 to 2 inches of rain, with local amounts up to 4 Inches in the Cascades, could fall during this period. In addition, thunderstorms on Thursday could produce rain rates of an inch in one hour or less.
The potentially excessive rainfall could lead to Urban and Small Stream Flooding. A short period of intense rainfall on Thursday could cause Flash Flooding and overwhelm storm drains, leading to flooded roads. Mud or Rock Slides are also possible in steep mountainous terrain.
A FLOOD WATCH means conditions are favorable for flooding but flooding is NOT imminent or occurring. Monitor the latest forecasts from the National Weather Service and be ready to act quickly if flooding is observed or a warning is issued.