Winter Weather Advisory issued December 19 at 2:21PM PST until December 20 at 4:00AM PST by NWS Portland OR
发布日期：2025-12-19T22:21+00:00
* WHAT...Snow. Additional snow accumulations 1 to 3 inches. * WHERE...Cascades of Lane County. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.
Flood Warning issued December 19 at 8:29AM PST until December 19 at 10:31PM PST by NWS Portland OR
发布日期：2025-12-19T16:29+00:00
...The Flood Warning is extended for the following rivers in Oregon... Alsea River near Tidewater affecting Benton and Lincoln Counties. Nehalem River near Foss affecting Clatsop and Tillamook Counties. Siletz River at Siletz affecting Lincoln County. Wilson River near Tillamook affecting Tillamook County. ...The Flood Warning continues for the following rivers in Oregon... Siuslaw River near Mapleton affecting Lane County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Siuslaw River near Mapleton. * WHEN...Until late this evening. * IMPACTS...Above 22.0 feet, expect widespread flooding of low-lying land. Several homes and structures in low areas of Mapleton start to flood. Numerous rural roads along and near the Siuslaw River will likely be flooded, and water begins to cover the lower sections of Hwy 126 at this stage. Flooding may be exacerbated during high tide. * ADDITIONAL DETAILS... - At 8:00 AM PST Friday the stage was 20.8 feet. - Bankfull stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 AM PST Friday was 21.6 feet. - Forecast...The river has crested and will fall below flood stage late this evening. - Flood stage is 18.0 feet. - http://www.weather.gov/safety/flood
Flood Watch issued December 19 at 6:15AM PST until December 20 at 4:00PM PST by NWS Portland OR
发布日期：2025-12-19T14:15+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...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more rain. * ADDITIONAL DETAILS... - Flood potential remains high today even though much less rain is forecast. Many area rivers and streams are rising this morning, and slow responding rivers could see rises into Saturday afternoon. With the saturated soils and high rivers and creeks, any additional rain will slow receding of the water and continue the potential for flooding. - http://www.weather.gov/safety/flood
Coastal Flood Advisory issued December 18 at 6:28PM PST until December 19 at 4:00PM PST by NWS Portland OR
发布日期：2025-12-19T02:28+00:00
* WHAT...Tidal overflow flooding expected. * WHERE...North and Central Coast of Oregon. * WHEN...From 10 AM to 4 PM PST Friday. The highest threat for minor flooding is during the high tides from 11 AM to 1 PM PST. * IMPACTS...Minor flooding and erosion, up to one foot 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 overflow concerns are due to the combination of high river levels and high tides.
