UPDATE, 7:40 a.m., Jan. 19:
One runway is now open at Sea-Tac Airport. If you have a flight, click here to check its current status.
ORIGINAL STORY, 5:55 a.m., Jan. 19:
An Ice storm warning has replaced the winter weather advisory.
National Weather Service in Seattle has issued an ice storm warning for Western Washington state. Forecasts call for rain; however freeing surface temperatures will cause the precipitation to create an icy surface area.
The warning is in effect until noon Thursday, when temperatures are expected to increase.
“Significant amounts of ice accumulations will make travel dangerous or impossible,” according to the warning. “Commerce will likely be severely impacted.”
No planes are taking off or landing at Sea-Tac Airport just south of Renton.
"All runways at Sea-Tac Airport are closed for de-icing. Crews are working as fast as they can to get them re-opened. Please check flight status online or contact your airline for any flight delays," accoring to the Port of Seattle.
Today: Periods of freezing rain, possibly mixed with rain and snow before 10am, then a chance of rain between 10am and 4pm, then snow likely after 4pm. Snow level 400 feet. High near 38. North wind between 6 and 9 mph. Chance of precipitation is 80%. Little or no ice accumulation expected. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight: Snow likely before 10pm, then rain likely. Snow level rising to 1000 feet. Cloudy, with a low around 34. South southeast wind between 7 and 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.