Flood Watch issued December 18 at 4:24PM PST until December 20 at 4:00PM PST by NWS Portland OR
发布日期：2025-12-19T00:24+00:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Oregon, including the following areas, Benton County Lowlands, Cascade Foothills of Marion and Linn Counties, Cascades of Lane County, Cascades of Marion and Linn Counties, Central Coast of Oregon, Central Columbia River Gorge I-84 Corridor, Central Oregon Coast Range, Central Oregon Coast Range Lowlands, Clackamas County Cascade Foothills, Clatsop County Coast, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lane County Cascade Foothills, Lane County Lowlands, Linn County Lowlands, Lower Columbia River, North Oregon Cascades, North Oregon Coast Range, North Oregon Coast Range Lowlands, Outer Southeast Portland Metro, Portland West Hills and Chehalem Mountain, Tillamook County Coast, Tualatin Valley, Upper Hood River Valley, West Central Willamette Valley, West Columbia River Gorge I-84 Corridor and West Columbia River Gorge of Oregon above 500 ft and southwest Washington, including the following areas, Central Columbia River Gorge SR 14 Corridor, Cowlitz County Lowlands, East Clark County Lowlands, Inner Vancouver Metro, North Clark County Lowlands, South Washington Cascade Foothills, South Washington Cascades, South Washington Coast, West Columbia River Gorge SR 14 Corridor, Willapa Hills and Willapa and Wahkiakum Lowlands. * 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
Flood Advisory issued December 18 at 4:18PM PST until December 18 at 10:15PM PST by NWS Portland OR
发布日期：2025-12-19T00:18+00:00
* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of northwest Oregon, including the following counties, Benton, Clackamas, Lane, Lincoln, Linn, Marion, Polk and Yamhill. * WHEN...Until 1015 PM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River and stream flows are elevated and rising. * ADDITIONAL DETAILS... - At 416 PM PST, Doppler radar and automated rain gauges indicated moderate to heavy rain. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in widespread minor flooding. - Some locations that will experience flooding include... Eugene, Salem, Corvallis, Albany, McMinnville, Dallas, Sweet Home, Lincoln City, Sheridan, Detroit, Springfield, Lebanon, Monmouth, Silverton, Independence, Stayton, Junction City, Philomath, Mount Hood Village and Harrisburg. - http://www.weather.gov/safety/flood
Flood Warning issued December 18 at 4:05PM PST until December 20 at 1:06AM PST by NWS Portland OR
发布日期：2025-12-19T00:05+00:00
...The National Weather Service in Portland OR has issued a Flood Warning for the following rivers in Oregon... N Santiam River at Mehama affecting Linn and Marion Counties. Santiam River at Jefferson affecting Linn and Marion Counties. Thomas Cr near Scio affecting Linn County. Mohawk River Near Springfield affecting Lane County. Tualatin River near Dilley affecting Washington County. * WHAT...Minor flooding is forecast. * WHERE...Santiam River at Jefferson. * WHEN...From this evening to early Saturday morning. * IMPACTS...Above 19.0 feet, expect widespread flooding of lowlands and agricultural areas, along with flooding of some secondary roads. * ADDITIONAL DETAILS... - At 3:45 PM PST Thursday the stage was 7.6 feet. - Bankfull stage is 13.0 feet. - Forecast...The river will rise above flood stage late this evening and crest around 17.8 feet Friday morning. The river will fall below flood stage Friday evening. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood
Winter Weather Advisory issued December 18 at 1:58PM PST until December 20 at 10:00AM PST by NWS Portland OR
发布日期：2025-12-18T21:58+00:00
* WHAT...Snow expected. Total snow accumulations of 6-12 inches above 3000 feet, except up to 14-16 inches above 2500 feet in the south Washington Cascades. Winds gusting as high as 40 mph. * WHERE...In Oregon, North Oregon Cascades and Cascades of Marion and Linn Counties. In Washington, South Washington Cascades. * WHEN...From 4 AM Friday to 10 AM PST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.
Wind Advisory issued December 18 at 1:04PM PST until December 18 at 7:00PM PST by NWS Portland OR
发布日期：2025-12-18T21:04+00:00
* WHAT...South winds 15 to 20 mph with gusts up to 45 mph expected. * WHERE...Central and Southern Willamette Valley, Central Oregon Coast Range Lowlands, Clackamas County Cascade Foothills, and Cascade Foothills of Marion and Linn Counties. * 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.
Flood Warning issued December 18 at 10:30AM PST until December 23 at 11:45AM 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...Minor flooding is forecast. * WHERE...Pudding River at Aurora. * WHEN...From Friday morning to late Tuesday morning. * IMPACTS...Above 27.0 feet, expect widespread flooding of numerous secondary roads and agricultural land. * ADDITIONAL DETAILS... - At 10:00 AM PST Thursday the stage was 15.9 feet. - Bankfull stage is 21.0 feet. - Forecast...The river is expected to rise above flood stage Friday morning and crest around 26.0 feet late Saturday morning. It will then fall below flood stage early Tuesday morning. - Flood stage is 22.0 feet. - http://www.weather.gov/safety/flood
