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Persistent, Flooding Rain Impacts the Northwest
December 8, 2025 at 04:03 PM EST
By WeatherBug's Anna Ruhl
A fast-moving series of atmospheric rivers continue to drench the Pacific Northwest today through Thursday.
A compact influx of water vapor from the Pacific Ocean brings continued rainfall to the Pacific Northwest. Surges of moisture from an atmospheric river over the area have resulted in saturated soils within the region, causing the area to become prone to flooding.
Major moisture surges have already impacted the area this morning, with additional larger plumes of moisture anticipated to pass through Oregon and Washington through Tuesday night into Thursday. With this setup, folks in the region can expect prolonged periods of moderate to heavy rainfall which will manifest dangerous flash flooding and landslides over steep terrain.
There will be 3 to 6 inches of rainfall within the Willamette Valley in Oregon and areas bordering both the Seattle and Portland, Ore. metro. Cascade, Olympic, and Coastal Mountain Ranges will see precipitation values well above 10 inches within a 72-hour period. In central Idaho, 2 to 4 inches of rainfall should be expected in the valleys, while mountain tops will see 4 to 8 inches of precipitation.
Currently, there are Flood Watches issued for most of Washington State, Northwest Oregon, North/Central Idaho, and Southeastern Montana
Always remember to “Turn around, don’t drown” when flooding is possible, and to stay up to date with the latest updates for possible flood alerts.
Wind will continue to pick up today as a series of disturbances track over the region. Wind gusts along the Pacific Coast and further inland could reach near 50-60 mph. These high winds could potentially cause power outages due to downed trees or power lines.
Wind concerns will reach out as far as North and South Dakota as the series of this system passes and travels further inland. This is not a “one and done” system as widespread wind, rain, and snow is expected to continue across the country over the next few days.
There are currently Wind Advisories out for Northwest Washington, Northwest Oregon, South-Central Washington, North-Central Oregon, South-Central Oregon, Northeast Washington, Northern Idaho, and Northwestern Montana.
High Wind Warnings have been issued for Central Montana through Northwestern Minnesota down South Dakota, Western Nebraska, Southeastern Wyoming, Western Wyoming, and Northeastern Colorado. There has also been a High Wind Watch issued for Northeastern Colorado.
Be sure to download the WeatherBug app to stay up to date on the latest on this changing weather. It’s never too early to have a supply kit packed in case of inclement weather. A simple kit including a weather radio, water, blankets, batteries, and non-perishable food items will go a long way in the event of a power outage.
A compact influx of water vapor from the Pacific Ocean brings continued rainfall to the Pacific Northwest. Surges of moisture from an atmospheric river over the area have resulted in saturated soils within the region, causing the area to become prone to flooding.
Major moisture surges have already impacted the area this morning, with additional larger plumes of moisture anticipated to pass through Oregon and Washington through Tuesday night into Thursday. With this setup, folks in the region can expect prolonged periods of moderate to heavy rainfall which will manifest dangerous flash flooding and landslides over steep terrain.
There will be 3 to 6 inches of rainfall within the Willamette Valley in Oregon and areas bordering both the Seattle and Portland, Ore. metro. Cascade, Olympic, and Coastal Mountain Ranges will see precipitation values well above 10 inches within a 72-hour period. In central Idaho, 2 to 4 inches of rainfall should be expected in the valleys, while mountain tops will see 4 to 8 inches of precipitation.
Currently, there are Flood Watches issued for most of Washington State, Northwest Oregon, North/Central Idaho, and Southeastern Montana
Always remember to “Turn around, don’t drown” when flooding is possible, and to stay up to date with the latest updates for possible flood alerts.
Wind will continue to pick up today as a series of disturbances track over the region. Wind gusts along the Pacific Coast and further inland could reach near 50-60 mph. These high winds could potentially cause power outages due to downed trees or power lines.
Wind concerns will reach out as far as North and South Dakota as the series of this system passes and travels further inland. This is not a “one and done” system as widespread wind, rain, and snow is expected to continue across the country over the next few days.
There are currently Wind Advisories out for Northwest Washington, Northwest Oregon, South-Central Washington, North-Central Oregon, South-Central Oregon, Northeast Washington, Northern Idaho, and Northwestern Montana.
High Wind Warnings have been issued for Central Montana through Northwestern Minnesota down South Dakota, Western Nebraska, Southeastern Wyoming, Western Wyoming, and Northeastern Colorado. There has also been a High Wind Watch issued for Northeastern Colorado.
Be sure to download the WeatherBug app to stay up to date on the latest on this changing weather. It’s never too early to have a supply kit packed in case of inclement weather. A simple kit including a weather radio, water, blankets, batteries, and non-perishable food items will go a long way in the event of a power outage.