Summary:
An atmospheric river will wane through Tuesday with areas of heavy rain, high elevation mountain snow, and strong winds over the northwestern U.S. tapering off. Across the Pacific Northwest into the Northern Rockies, river and small stream flooding impacts are expected through today in response to the persistent rainfall, snowmelt, and potential ice jams. Impacted Lanes: I-5, I-90, I-82, I-84, I-15, I-94, I-80, I-25, I-76, I-29, I-35, I-30, I-20, I-10, I-45, I-37, I-69, I-49, I-12, I-55, I-59, I-65
Washington
Winter Storm Warning remains in effect until 4 PM PST this afternoon
- Heavy snow expected at or above elevations greater than 4000 ft. Total snow accumulations between 12 to 18 inches, with locally higher amounts over the higher peaks.
- Impacts: Travel could be very difficult. Gusty winds could bring down tree branches.
Winter Weather Advisory remains in effect until 4 PM PST this afternoon
- Snow. Additional snow accumulations between 4 and 10 inches. Total snow accumulations up to 12 inches. Winds gusting 40 to 60 mph, highest on exposed ridges.
- Impacts: Roads, and especially bridges and overpasses, will likely become slick and hazardous. Heavy snowfall and very low visibility will create extremely dangerous driving conditions. Strong winds could cause tree damage.
High Wind Warning remains in effect until 6 PM PST this evening
- Southwest winds 30 to 40 mph with gusts up to 65 mph expected.
- Impacts: Damaging winds will blow down trees and may cause power outages. Travel will be difficult, especially for high profile vehicles.
Wind Advisory remains in effect until 6 PM PST this evening
- Southwest winds 25 to 35 mph with gusts up to 50 mph expected.
- Impacts: Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles.
Flood Warning remains in effect until 6 PM PST Wednesday evening
- Minor flooding is occurring and moderate flooding is forecast due to rainfall.
- Impacts: Flooding of rivers, creeks, streams, and other flood-prone locations is occurring. Road closures have been reported.
Flood Watch remains in effect until 3 PM PST this afternoon
- Flooding caused by excessive rainfall continues to be possible.
- 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. Water is expected over roadways.
Idaho
Winter Weather Advisory remains in effect until 10 PM PST this evening
- Snow expected Above 4000 feet. Total snow accumulations 6 to 12 inches. Winds gusting as high as 40 mph on ridges exposed to southwest winds.
- Impacts: Motorists should be prepared for winter driving conditions with periods of heavy snow through mid to late afternoon.
Wind Advisory remains in effect until 6 PM PST this evening
- Southwest winds 25 to 35 mph with gusts up to 50 mph expected.
- Impacts: Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Winds this strong can make driving difficult, especially for high profile vehicles.
Flood Advisory remains in effect until 10 PM PST this evening
- Urban and small stream flooding caused by snowmelt is expected.
- Impacts: Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent.
Texas
Dense Fog Advisory remains in effect until 10 AM CST this morning
- Visibility one quarter mile or less in dense fog.
- Impacts: Low visibility could make driving conditions hazardous.
Additional Winter Weather Advisories include but are not limited to: Oregon, and Montana
Additional High Wind Warnings include but are not limited to: Oregon, Montana, Wyoming, and Nebraska
Additional Wind Advisories include but are not limited to: Oregon, California, North Dakota, and South Dakota
Additional Flood Warnings include but are not limited to: South Carolina, Oregon, North Carolina, Florida, Montana, Louisiana, Arkansas, Kentucky, Mississippi, and Tennessee
Additional Flood Advisories include but are not limited to: Montana, Nevada, Mississippi, Tennessee, and Arkansas
Additional Dense Fog Advisories include but are not limited to: South Dakota, Minnesota, Iowa, Oklahoma, Arkansas, Louisiana, Mississippi, Alabama, and Florida