Soundings from RAP, GFS, NAM, and other Model Analyses and Forecasts, RAOBS, or Aircraft  (restricted)

Effective 23-Feb-2021, for access to aircraft soundings only, we no longer allow access by domain name (e.g., ""). We only allow access by IP address or username/password. Please contact for more information.
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Instructions | Site info: METARs, RAOBs (Latest RAOB times), Airports (in another window) | version history (in another window)
It may take 30 seconds for the initial data to load
Latest version is 13-Dec-2017. Several changes. See change details (in another window) for more information. (To get the new code, you may have to hold down the shift key and click reload.)

Latest Op40 analysis is valid at 10:00 UTC.
Latest Bak40 analysis is valid at 00:00 01-Jan-70 UTC.
For up-to-date information about the status of RAP runs, see the RAP forum (new window).
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Instructions | Site info: METARs, RAOBs, Airports
For information on interpreting these soundings, please see the following:
  • Practical Use of Meteorological Models and Visulization Tools for Soaring Forecasters Presentation by Walt Rogers at the 2016 Soaring Society of American National Convention (Greenville NC).
  • The NWS Publication The Front from Feb 2004. (The web site has been updated a bit from what is shown in the article, but this is an excellent reference for pilots nonetheless.)
  • Tutorial on upper air plots from the University of Washington

    Please send questions about this page to one or more of the following people.
    webmaster-amb.gsd for technical questions about the java display (such as a blank screen)
    Brian Jamison for questions about soundings and the SkewT display in general, and about RAOB soundings
    John Brown for questions about model soundings (types of models, available forecasts, latency, etc.)
    Model soundings provided by the RAP/HRRR team at GSL,
    RAOB data provided by Mark Govett and Brian Jamison

    Last modified: Mon Feb 22 22:09:42 GMT 2021