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  • NBM

      • PNS18-02: Soliciting Comments on the Upgrade of Experimental National Blend of Models Guidance through June 27, 2018
      • SCN 19-07:Temporary change of SBN/NOAAPORT transmission of National Blend of Models (NBM) Guidance Effective March 11-13, 2019
      • SCN18-78 Updated:Correction of the GRIB2 encoding of the Probability of Thunder in the experimental National Blend of Models guidance (NBM) effective December 05, 2018, and the request for comments
      • SCN18-78 Updated: Upgrade of experimental National Blend of Models guidance effective October 3, 2018, and request for comments
      • SCN18-78 Updated: Upgrade of experimental National Blend of Models guidance effective September 19, 2018, and request for comments
      • SCN18-78: Upgrade of experimental National Blend of Models guidance effective September 19, 2018, and request for comments
      • SCN17-59 Updated: Slight adjustments to SBN and NOMADS transmission of National Blend of Models (NBM) guidance and bug fix effective on October 10, 2017
      • SCN17-59: Updated: Slight adjustments to SBN and NOMADS transmission of National Blend of Models (NBM) guidance and bug fix effective on October 10, 2017
      • SCN17-59: Updated: Upgrade of experimental National Blend of Models guidance effective July 27, 2017, and request for comments
      • SCN 17-59: Updated upgrade of experimental National Blend of Model guidance effective July 11, 2017, and request for comments
      • TIN 16-33: Amended Implementation of experimental National Blend of Models guidance effective November 3, 2016, and request for comments
      • TIN 16-33:Implementation of experimental National Blend of Models guidance effective September 21, 2016, and request for comments
      • Amended TIN 15-50: Implementation of experimental National Blend of Models guidance for the CONUS effective January 6, 2016
      • TIN 15-50: Implementation of experimental National Blend of Models guidance for the CONUS effective December 15, 2015

For a complete listing of SCN, TIN, PNS, and other change notifications from NWS, please see:
https://www.weather.gov/notification/or https://www.weather.gov/notification/archive (for older notices)