King County Metro Transit is operating all bus routes on designated snow routes until further notice.
From Metro:
If your bus does not have a pre-planned snow route, it will operate its regular route, however service may be delayed due to weather and road conditions. Transit customers are advised to wait for buses at posted bus stops on flat portions of cleared arterials or at major transfer points, such as park-and-ride lots and transit centers where there may be multiple service options.
It is not possible to know when a bus will arrive at a specific location, or to provide service updates at the individual trip or stop level.
Use regularly published timetables as a guide, check Metro’s online snow page for route updates, be aware of conditions in your area and be prepared for delays.