Wind Advisory issued December 18 at 10:59AM PST until December 18 at 7:00PM PST by NWS Portland OR
发布日期：2025-12-18T18:59+00:00
* WHAT...South winds 15 to 20 mph with gusts up to 45 mph expected. * WHERE...Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, and Central Oregon Coast Range Lowlands. * WHEN...Until 7 PM PST this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Saturated soils could result in downed trees, and tree limbs could be blown down. Power outages may result.
High Wind Warning issued December 18 at 10:59AM PST until December 18 at 7:00PM PST by NWS Portland OR
发布日期：2025-12-18T18:59+00:00
* WHAT...Southwest winds 20 to 30 mph with gusts up to 60 mph possible. * WHERE...Central Coast of Oregon and Central Oregon Coast Range. * WHEN...Until 7 PM PST this evening. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.
Flood Warning issued December 18 at 10:30AM PST until December 19 at 12:14PM PST by NWS Portland OR
发布日期：2025-12-18T18:30+00:00
...The Flood Warning continues for the following rivers in Washington...Oregon... Cowlitz River at Kelso affecting Cowlitz County. Johnson Creek at Sycamore affecting Multnomah and Clackamas Counties. Clackamas River at Estacada affecting Clackamas County. Clackamas River near Oregon City affecting Clackamas County. Sandy River near Bull Run affecting Multnomah and Clackamas Counties. Hood River Near Hood River affecting Hood River County. Siuslaw River near Mapleton affecting Lane County. Molalla River near Canby affecting Clackamas County. Marys River near Philomath affecting Benton County. Pudding River at Aurora affecting Marion and Clackamas Counties. Luckiamute River near Suver affecting Polk and Benton Counties. S Yamhill River at McMinnville affecting Yamhill County. ...The Flood Warning is extended for the following rivers in Oregon... Siletz River at Siletz affecting Lincoln County. Trask River near Tillamook affecting Tillamook County. * WHAT...Moderate flooding is forecast. * WHERE...Siletz River at Siletz. * WHEN...From this afternoon to Friday afternoon. * IMPACTS...Above 25.0 feet, expect major flooding, with evacuations of residences and areas along the Siletz between mile post 2.5 and mile post 5 on State Highway 229 near Sunset Landing downstream to Coyote Rock. Stay tuned to local media sources and law enforcement information for details. * ADDITIONAL DETAILS... - At 9:30 AM PST Thursday the stage was 7.9 feet. - Bankfull stage is 12.0 feet. - Forecast...The river is expected to rise above flood stage this evening and crest around 24.3 feet late this evening. It will then fall below flood stage Friday morning. - Flood stage is 16.0 feet. - http://www.weather.gov/safety/flood
Flood Watch issued December 18 at 2:42AM PST until December 20 at 4:00PM PST by NWS Portland OR
发布日期：2025-12-18T10:42+00:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Northwest Oregon and southwest Washington including the following counties. In Oregon: Benton, Clackamas, Clatsop, Columbia, Hood River, Lane, Linn, Lincoln, Marion, Multnomah, Polk, Tillamook, Washington, and Yamhill. In Washington: Clark, Cowlitz, Pacific, Skamania, and Wahkiakum. * WHEN...Through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. Area creeks and streams are running high and could flood with more heavy rain. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides. * ADDITIONAL DETAILS... - An atmospheric river is forecast to bring periods of heavy rain to northwestern Oregon and southwestern Washington today. This system occurs at a time when area rivers continue to run high and soils remain saturated following heavy rain earlier in the month. During initial heavy rainfall today, the urban and small stream flooding threat will be most urgent, although the details of precise timing and location of the highest risk remains uncertain at this time. As runoff works its way downstream, the river flooding threat will increase tonight into Friday, with numerous area rivers now forecast to reach at least Minor flood stage. Slower reacting rivers may stay in flood stage into Saturday afternoon. - http://www.weather.gov/safety/flood
Coastal Flood Advisory issued December 18 at 12:14AM PST until December 18 at 4:00PM PST by NWS Portland OR
发布日期：2025-12-18T08:14+00:00
* WHAT...Tidal overflow flooding expected due to a combination of high tides and increased flow along coastal rivers. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...From 8 AM to 4 PM PST Thursday. * IMPACTS...Minor flooding, up to one above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers. * ADDITIONAL DETAILS...The tidal gauge in Toke Point, Astoria, and Garibaldi are all forecast to see tides of 9.5 ft or higher. When combined with high flow rates from heavy rain, tidal overflow concerns increase.
