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Forecasts Maps & FDs

Winds Aloft and Forecast Charts

Before departure, call 1-800-WX-BRIEF for latest weather and to file flight plans.

Current
Conditions
Airmets, Obs & Pireps TAFs and FAs Forecast Charts Sea-Tac
Airport Info
Winds/Temps
Aloft Forecasts
Weather Check, next 48 hours
(click on links for more detail)
Text FDs...
  • West Coast Sites
           6 hrs | 12 hrs | 24 hrs
  • Rocky Mtn Sites
           6 hrs | 12 hrs | 24 hrs

  • Winds/Temps Aloft Text...other Areas

  • Interactive Winds/Temps Aloft

  • latest surface analysis image
         Current | +12 hrs | +24 | +36 | +48
    move mouse over links to change image
    Hazardous Weather Outlooks Low Level Sig. Weather Charts
  • Icing Potential Forecasts
  • Short Term Convection
  • Lightning Potential over the next 3 hours (experimental)
  • Volcanic Ash Alerts
  • Turbulence Forecasts
  • Day 1-2 Convective Outlooks
  • Image Types Forecast Hour
    issued time 1720Z 2310Z 0530Z 0935Z
    4 Panels 00/12 06/18 12/00 18/06
    12 Hr SigWx 00 06 12 18
    24 Hr SigWx 12 18 00 06
    12 Hr Surface 00 06 12 18
    24 Hr Surface 12 18 00 06
    Miscellaneous Forecast Charts
    Short Range Forecasts Forecast Hour
    Latest Forecast Maps (Color) 12 18 24 30 36 48
    Latest Forecast Maps (BW) 12 18 24 30 36 48
    Type of chart Forecast Day
    Pressure & Fronts (Color) 3 4 5
    Pressure & Fronts (BW) 3 4 5
    Precipitation Probability 3 4 5 6 7
    Maximum Temperatures 3 4 5 6 7
    Maximum Departure from Normal 3 4 5 6 7
    Minimum Temperatures 3 4 5 6 7
    Minimum Departure from Normal 3 4 5 6 7
      Miscellaneous Items:
    1. Coming November 5, 2008: Format Change for TAFs from 24-Hour Format to 30-Hour Format
    2. Coming November 5, 2008: Western Region Locations Adopting a 30-Hour Valid TAF Period
    3. TRACON Briefing Package courtesy of the
      Center Weather Service Unit (CWSU) in Auburn, WA.
    4. High Level Significant Weather Charts
    5. Atlantic Mid-Level Significant Weather Charts
    6. NOAA's National Aviation Weather Center, with lots of aviation data across the USA
    7. Alaska Aviation Weather Unit
    8. Nav Canada Aviation Weather
    9. Airmet plotting map (.gif)



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    National Weather Service Mission: "The National Weather Service (NWS) provides weather, hydrologic, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy. NWS data and products form a national information database and infrastructure which can be used by other governmental agencies, the private sector, the public, and the global community."