Summary:
Two major storm systems will impact different areas of the U.S. on Friday. A dynamic storm will lift through the Plains and severe thunderstorms with damaging winds and tornadoes are likely from parts of Texas and Oklahoma into Arkansas and Louisiana. In the Northwest, an anomalous plume of Pacific moisture will inundate the region with heavy rain, possible flooding, mountain snow and high winds. Impacted Lanes: Highway 20, I-84, US-20, US-26, US-93, US-95, SR-21, SR-51, SR-55, I-90, I-15, I-82, US-97
Washington
Winter Storm Warning remains in effect until 11 AM PDT this morning
- Heavy snow expected. Total snow accumulations between 10 and 20 inches near the Cascade crest. Winds gusting as high as 45 mph.
- Impacts: Travel could be very difficult to impossible along Highway 20 from Mazama to Washington Pass. Gusty winds with heavy west snow could bring down tree branches.
High Wind Warning remains in effect until 11 PM PDT Saturday night
- Southwest to west winds 20 to 35 mph with gusts 50 to 60 mph.
- Impacts: Damaging winds could blow down trees and power lines. Scattered to widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.
Idaho
Winter Strom Warning remains in effect until 6 PM MDT this evening
- Heavy snow expected. Total snow accumulations of 8 to 15 inches. Winds gusts as high as 25 mph.
- Impacts: Travel could be very difficult to impossible. Gusty winds could bring down tree branches. Blowing snow will severely restrict visibility. Roads that are impacted are I-84, US-20, US-26, US-93, US-95, SR-21, SR-51, SR-55
Winter Weather Advisory remains in effect until 9 PM MDT Saturday evening
- Snow expected. Total accumulation of 3 to 9 inches, with up to 14 inches on the higher ridgetops. Little to no accumulation is expected in the Challis area. Winds gusting as high as 50 mph.
- Impacts: Plan on slippery road conditions. Gusty winds could bring down tree branches.
Wind Advisory remains in effect until 9 PM MDT Saturday evening
- Southwest winds 20 to 30 mph with gusts up to 50 mph expected. The strongest winds will be across portions of the Snake Plain and Magic Valley. Gusts over 50 mph are possible along I 84 near Yale and also along Idaho 33 between Rexburg and the Teton Valley.
- Impacts: Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Blowing dust and reduced visibility is possible, especially in recently plowed areas.
Illinois
Wind Advisory remains in effect until 4 PM CDT Saturday evening
- South winds 20 to 30 mph with gusts up to 55 mph expected.
- Impacts: Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel could be difficult, especially for high profile vehicles. Showers and thunderstorms will accompany the windy conditions, and may locally enhance winds.
Louisiana
Dense Fog Advisory remains in effect until 10 AM CDT this morning
- Visibility one quarter mile or less in dense fog.
- Impacts: Hazardous driving conditions due to low visibility.
