Flood Warning issued December 18 at 9:05PM PST until December 19 at 3:48PM PST by NWS Portland OR
Issue date: 2025-12-19T05:05+00:00
...The Flood Warning is extended for the following rivers in Oregon... N Santiam River at Mehama affecting Linn and Marion Counties. Hood River Near Hood River affecting Hood River County. Sandy River near Bull Run affecting Multnomah and Clackamas Counties. Santiam River at Jefferson affecting Linn and Marion Counties. Molalla River near Canby affecting Clackamas County. Pudding River at Aurora affecting Marion and Clackamas Counties. Luckiamute River near Suver affecting Polk and Benton Counties. Tualatin River near Dilley affecting Washington County. S Yamhill River at McMinnville affecting Yamhill County. ...The Flood Warning continues for the following rivers in Oregon... Washington... Nehalem River near Foss affecting Tillamook and Clatsop Counties. Trask River near Tillamook affecting Tillamook County. Siletz River at Siletz affecting Lincoln County. Clackamas River at Estacada affecting Clackamas County. Johnson Creek at Sycamore affecting Multnomah and Clackamas Counties. Wilson River near Tillamook affecting Tillamook County. Nestucca River near Beaver affecting Tillamook County. Clackamas River near Oregon City affecting Clackamas County. Marys River near Philomath affecting Benton County. Siuslaw River near Mapleton affecting Lane County. Mohawk River Near Springfield affecting Lane County. Grays River at Covered Bridge near Rosburg affecting Wahkiakum County. Cowlitz River at Kelso affecting Cowlitz County. * WHAT...Moderate flooding is forecast. * WHERE...Sandy River near Bull Run. * WHEN...Until Friday afternoon. * IMPACTS...Above 21.5 feet, expect significant bank erosion, large amounts of debris in the river, and flooding of low areas along the river, especially in the lower reach of the Sandy near Troutdale. * ADDITIONAL DETAILS... - At 7:45 PM PST Thursday the stage was 17.2 feet. - Bankfull stage is 18.0 feet. - Forecast...The river will rise above flood stage overnight and crest around 20.9 feet late tonight. The river will then fall below flood stage late Friday morning. - Flood stage is 19.3 feet. - http://www.weather.gov/safety/flood
Flood Warning issued December 18 at 9:05PM PST until December 23 at 10:17AM PST by NWS Portland OR
Issue date: 2025-12-19T05:05+00:00
...The Flood Warning is extended for the following rivers in Oregon... N Santiam River at Mehama affecting Linn and Marion Counties. Hood River Near Hood River affecting Hood River County. Sandy River near Bull Run affecting Multnomah and Clackamas Counties. Santiam River at Jefferson affecting Linn and Marion Counties. Molalla River near Canby affecting Clackamas County. Pudding River at Aurora affecting Marion and Clackamas Counties. Luckiamute River near Suver affecting Polk and Benton Counties. Tualatin River near Dilley affecting Washington County. S Yamhill River at McMinnville affecting Yamhill County. ...The Flood Warning continues for the following rivers in Oregon... Washington... Nehalem River near Foss affecting Tillamook and Clatsop Counties. Trask River near Tillamook affecting Tillamook County. Siletz River at Siletz affecting Lincoln County. Clackamas River at Estacada affecting Clackamas County. Johnson Creek at Sycamore affecting Multnomah and Clackamas Counties. Wilson River near Tillamook affecting Tillamook County. Nestucca River near Beaver affecting Tillamook County. Clackamas River near Oregon City affecting Clackamas County. Marys River near Philomath affecting Benton County. Siuslaw River near Mapleton affecting Lane County. Mohawk River Near Springfield affecting Lane County. Grays River at Covered Bridge near Rosburg affecting Wahkiakum County. Cowlitz River at Kelso affecting Cowlitz County. * WHAT...Moderate flooding is forecast. * WHERE...Pudding River at Aurora. * WHEN...From late tonight to Tuesday morning. * IMPACTS...Above 27.0 feet, expect widespread flooding of numerous secondary roads and agricultural land. * ADDITIONAL DETAILS... - At 8:00 PM PST Thursday the stage was 16.7 feet. - Bankfull stage is 21.0 feet. - Forecast...The river is expected to rise above flood stage late tonight and crest around 26.6 feet early Saturday morning. The river will then fall below flood stage Tuesday morning. - Flood stage is 22.0 feet. - http://www.weather.gov/safety/flood
Flood Watch issued December 18 at 4:24PM PST until December 20 at 4:00PM PST by NWS Portland OR
Issue date: 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
Winter Weather Advisory issued December 18 at 1:58PM PST until December 20 at 10:00AM PST by NWS Portland OR
Issue date: 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.
