National Weather Service United States Department of Commerce

Seattle, WA

Center Weather Service Unit

Seattle Center Weather Service Unit       

  • Instrument Flight Rules (IFR) or Mountain Obscuration - AIRMET SIERRA (6-hour period)
    • Ceilings less than 1000 feet and/or visibility less than 3 miles affecting over 50% of the area at one time.
    • Extensive mountain obscuration
current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
Airmet legend