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Graphical Airmen's Meteorological Information (G-AIRMET) Weather Advisories

G-AIRMET

A G-AIRMET is a graphical advisory of weather that may be hazardous to aircraft, but are less severe than SIGMETs. They are valid at specific time "snapshots". The G-AIRMET forecasts are distributed in XML (USWX) format. The USWX XML files contain forecaster-created graphical objects which depict hazard areas and attributes. G-AIRMETs are issued at discrete times 3 hours apart for a period of up to 12 hours into the future (00, 03, 06, 09, and 12 hours). They are issued at 03:00, 09:00, 15:00 and 21:00 UTC (with updates issued as necessary). G-AIRMETs are issued by the AWC for the lower 48 states and adjacent coastal waters. The G-AIRMET USWX XML files are currently disseminated from AWC to the operational NGITWS system, and from AWC to the NWSTG for dissemination over NOAAPort. AWC provides the legacy AIRMET information via traditional alphanumeric code (TAC), which is currently archived at NCEI. The G-AIRMET data in BUFR format was operational from 2010 to 2022 and was not archived. This data archive includes the USWX XML formatted products starting on January 1, 2023.
  • Cite as: National Centers for Environmental Prediction/Aviation Weather Center. 2023: Graphical Airman's Meteorological Information Weather Advisories(G-AIRMET). [indicate subset used]. NOAA National Centers for Environmental Information. NCEI DSI 2069_01. Accessed [date].
  • NCEI DSI 2069_01
  • gov.noaa.ncdc:C01686
C01686
XML
Download Data
Distribution Formats
  • XML
  • PDF
Ordering InstructionsContact NCEI for other distribution options and instructions.
DistributorNOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Customer Engagement Branch
NOAA National Centers for Environmental Information
1-828-271-4800
ncei.orders@noaa.gov
Time Period2023-01-01 to Present (time interval: 6-hour)
Spatial Bounding Box Coordinates
N: 50.0
S: 24.0
E: -66.0
W: -125.0
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2023-01-01
Editionv1.0
Data Presentation Form Digital image
Dataset Progress StatusOngoing - data is continually being updated
Data Update Frequency Daily
PurposeIt is a graphical advisory of weather that might be hazardous to aircraft for up to 12 hours in the future.
Use Limitations
  • Applies to lower 48 states and adjacent coastal waters.
Dataset Citation
  • Cite as: National Centers for Environmental Prediction/Aviation Weather Center. 2023: Graphical Airman's Meteorological Information Weather Advisories(G-AIRMET). [indicate subset used]. NOAA National Centers for Environmental Information. NCEI DSI 2069_01. Accessed [date].
Cited Authors
  • National Centers for Environmental Prediction/Aviation Weather Center
Collaborators
  • Leffler, Jonathan
    NOAA Aviation Weather Center
  • Hepper, Robert
    NOAA Aviation Weather Center
Publishers
  • NOAA National Centers for Environmental Information
Theme keywordsGlobal Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Extreme Weather
  • Earth Science Services > Models > Weather Research/Forecast Models
Data Center keywordsGlobal Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NWS/NCEP > National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Place keywordsGlobal Change Master Directory (GCMD) Location Keywords
  • Continent > North America > United States Of America
Use Constraints
    • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Access Constraints
    • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
    Other ConstraintsCite as: National Centers for Environmental Prediction/Aviation Weather Center. 2023: Graphical Airman's Meteorological Information Weather Advisories(G-AIRMET). [indicate subset used]. NOAA National Centers for Environmental Information. NCEI DSI 2069_01. Accessed [date].
    Fees
    • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
    Lineage information for: dataset
    Lineage StatementThe data were produced by the NOAA Aviation Weather Center and are archive by the NOAA National Centers for Environmental Information.
    Lineage information for: repository
    Processing Steps
    • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
    Last Modified: 2023-06-23
    For questions about the information on this page, please email: ncei.info@noaa.gov