Flood Watch issued March 11 at 1:21PM PDT until March 13 at 11:00PM PDT by NWS Portland OR
发布日期：2026-03-11T20:21+00:00
* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of northwest Oregon, including the following areas, Clackamas County Cascade Foothills, Clatsop County Coast, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lower Columbia River, North Oregon Coast Range, North Oregon Coast Range Lowlands, Outer Southeast Portland Metro, Portland West Hills and Chehalem Mountain, Tillamook County Coast, Tualatin 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, Cowlitz County Lowlands, East Clark County Lowlands, Inner Vancouver Metro, North Clark County Lowlands, South Washington Cascade Foothills, West Columbia River Gorge SR 14 Corridor, Willapa Hills and Willapa and Wahkiakum Lowlands. * WHEN...From 5 PM PDT this afternoon through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. 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... - http://www.weather.gov/safety/flood
Winter Storm Warning issued March 11 at 11:34AM PDT until March 13 at 5:00AM PDT by NWS Portland OR
发布日期：2026-03-11T18:34+00:00
* WHAT...Heavy snow expected above 2500 ft. Total snow accumulations of 15 to 25 inches with up to 30 inches along the volcanos. Winds gusting as high as 35 mph, except up to 45 mph along the peaks. * WHERE...South Washington Cascades. * WHEN...Until 5 AM PDT Friday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...There will be a brief lull in snowfall late today, but will increase again with heavier precipitation. Heaviest snowfall expected between 5AM-5PM Today, and 5AM-5PM Thursday. Snow levels will begin to rise above 5000 ft late Thursday.
