NOAA/ National Weather Service has released a weather warning for Western Washington 
December 9-11, 2014: 

  • Two More Strong North Pacific Storms To Impact Western Wash This Week
  • Storm #2 Tuesday (12/9) / Wednesday (12/10): Rain and Stronger Wind, More Flooding, Tidal Overflow
  • Storm #3 Thursday (12/11): Potential Strong Damaging Winds All Areas, Less Rain

Resources for more information:
NWS Seattle Website:
www.weather.gov/seattle/

NW River Forecast Center:
http://www.nwrfc.noaa.gov/rfc/ 

Tides Online:
http://tidesonline.nos.noaa.gov

Washington State Department of Transportation:

http://wsdot.wa.gov