UPDATE TUES. 1/11/11 1pm: The National Weather Service is sticking to their prediction  for today’s impending snowstorm, saying that 1 to 4-inches of snow is probable, starting in the late afternoon, then turning to rain after midnight.
“One to three inches of snow likely. Locally heavier accumulations are possible near the Cascade foothills … snow will begin late this afternoon and change to rain after midnight,” reads the statement.
University of Washington Meteorologist Cliff Mass  thinks the snow will arrive a bit later:
“The latest high-resolution run shows light snow hitting Seattle between 5 and 6 PM and perhaps could hold out until 10 PM before it turns to rain. Could be some freezing rain at the tail end.”
Here’s the most-recent Weather Service statement  in its entirety:
Statement as of 10:59 AM PST on January 11, 2011
A Winter Weather Advisory for the San Juan Islands… western Skagit County… Admiralty Inlet… Everett and vicinity… east Puget Sound lowlands… Seattle Bremerton area… Tacoma area and Strait of Juan de Fuca remains in effect from 4 PM this afternoon to 4 am PST Wednesday.
* Accumulations… one to three inches of snow likely. Locally heavier accumulations are possible near the Cascade foothills.
* Timing… snow will begin late this afternoon and change to rain after midnight.
* Impacts… expect winter weather travel conditions.
* Major impact… snow is likely to start falling during the afternoon commute period. People should seriously consider finishing their afternoon commute early today if at all possible.
* Freezing rain… there is a possibility of brief freezing rain during the change from snow to rain. Freezing rain is even worse for motorists than snow.
A Winter Weather Advisory means that periods of snow… sleet… or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities… and use caution while driving.
To help you monitor what the roads are like in the area, here are several live webcams:
Seahurst Park Underwater Webcam:
Wag the Dog Dogcam #2: