Today and tomorrow Northwest Washington is under Flood Warnings. Heavy rain is expected and particularly the area north of Seattle is presently seeing flooding which will only increase through tomorrow. Whatcom County which is the county bordering British Columbia and through which both the railroad and the only Interstate Highway (I5) run has declared a state of emergency. The main street of Bellingham is reported to be underwater.
If history is accurate, it may take a considerable amount of time for transportation to return to normal due not only due to flooding closing roads and rails, but wash-outs, bridge damage and landslides. Please check for local conditions.
It is, however, expected to be dry for a few days after this event.
I suggest that you follow the latest information on websites such as:
www.nwcn.com
http://www.king5.com/weather/
http://www.kirotv.com/index.html
www.postintelligencer.com
http://www.wsdot.wa.gov/traffic/