Spokane, Washington – Frost is contributing to locally slick road conditions across parts of the Inland Northwest this morning, particularly on untreated surfaces and in outlying areas.
According to the National Weather Service in Spokane, overnight temperatures dipped low enough to allow frost to form on roads, sidewalks, parking lots, and bridges, increasing the risk of icy patches during the Thursday morning commute. While conditions may appear dry in some locations, shaded and less-traveled areas can still become slippery.
The greatest risk is expected on untreated roads and elevated surfaces, including bridges and overpasses along major travel corridors such as I-90 through Spokane and Spokane Valley, US-195 south toward Pullman, and State Route 904 near Cheney. Rural and residential roads may also be affected, especially in areas with lingering moisture from previous days.
The National Weather Service emphasizes that frost-related slick spots can be difficult to see, particularly during the early morning hours before sunrise. Drivers are urged to reduce speeds, increase following distances, and use caution when approaching intersections and ramps.
Pedestrians should also be alert for slippery sidewalks and parking lots, as falls are more likely when frost is present. School zones, hospital entrances, and business parking areas may be especially slick early in the morning.
Conditions are expected to gradually improve later this morning as temperatures rise above freezing and surfaces dry. However, localized slick spots may persist longer in shaded or sheltered areas.
Residents across eastern Washington and north Idaho, including Spokane, Spokane Valley, Coeur d’Alene, Pullman, and Lewiston, are encouraged to allow extra travel time and remain alert for changing road conditions.
The National Weather Service advises continued caution until mid-morning and reminds travelers that even minor frost can create hazardous driving conditions.
