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 (12-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
Please use the new version of this page at http://www.wrh.noaa.gov/zse/airmets.php?ifr.

current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
current image- AIRMET SIERRA - from AWC
Airmet legend