Friday November 4th, 2022 :: 12:03 p.m. PDT
* WHERE…Portions of northwest Oregon and southwest Washington, including the following counties, in northwest Oregon, Clackamas, Clatsop, Columbia, Multnomah, Tillamook, Washington and Yamhill. In southwest Washington, Clark, Cowlitz, Pacific, Skamania and Wahkiakum.
* WHEN…Until 1000 PM PDT Friday.
* IMPACTS…Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. Ponding of water in urban or other areas is occurring or is imminent.
* ADDITIONAL DETAILS… – At 1151 AM PDT, satellite and forecast estimates indicate heavy rain is moving into the advisory area. This will cause urban and small stream flooding. Overflowing poor drainage areas have already caused minor flooding in the advisory area. – Additional rainfall amounts of 1 to 2 inches are expected at the coast and inland valleys, with 2 to 4 inches in the higher terrain of the Coast Range and Cascade foothills through this evening. – Some locations that will experience flooding include… Hillsboro, Oregon City, Battle Ground, Washougal, St. Helens, Kelso, Sandy, Astoria, Seaside, Woodland, Warrenton, Vernonia, Castle Rock, Cannon Beach, Stevenson, Long Beach, Cascade Locks, Garibaldi, Manzanita and Cathlamet.
* AFFECTED AREAS: CLACKAMAS, OR … CLATSOP, OR … COLUMBIA, OR … MULTNOMAH, OR … TILLAMOOK, OR … WASHINGTON, OR … YAMHILL, OR … CLARK, WA … COWLITZ, WA … PACIFIC, WA … SKAMANIA, WA … WAHKIAKUM, WA
Be aware of your surroundings and do not drive on flooded roads. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. A Flood Advisory means creeks are running high and may be out of their banks. Roads in urban or rural areas may have ponding or flooding in low areas.
- Severity: Minor – Minimal to no known threat to life or property
- Urgency: Expected – Responsive action SHOULD be taken soon (within next hour)
- Certainty: Likely (p > ~50%)
- Category: Meteorological (inc. flood)
- Event: Flood Advisory