Seattle, Washington – Snow is expected to remain confined to the mountains as cooler air moves into western Washington, but patchy ice could create slick spots in the lowlands by early Saturday, particularly on elevated surfaces.
According to the National Weather Service in Seattle, significant snow accumulation is expected in the Cascades through tonight, especially above 1,500 feet, where travel across mountain passes may become difficult. In the lowlands, precipitation is expected to taper off this evening as temperatures gradually cool overnight.
While a rain-snow mix cannot be ruled out late tonight, forecasters say snow accumulation in the lowlands is very unlikely, with the chance of one inch or more remaining below 10 percent for most areas. However, wet roads may freeze by Saturday morning, creating isolated icy patches on bridges, overpasses, and less-traveled roadways.
The National Weather Service highlights several locations to monitor closely, including SR 18 over Tiger Mountain, US 101 west of Lake Crescent, and Interstate 5 through the Chuckanut area, as well as some Cascade foothill communities that typically cool faster overnight.
Officials urge drivers to use caution during early morning travel, particularly for weekend activities, as icy conditions may be difficult to spot in low-light conditions.
Motorists traveling into the mountains should be prepared for winter driving conditions, while lowland residents are advised to remain alert for localized slick spots into Saturday morning.
