The IEM has a database archive of
AWC G-AIRMETs
since their inception on about 3 March 2021. The IEM also maintains an
archive of the raw XML text, which you can find listed on the main
AFOS List Page for KKCI. These
products are assigned a product identifier of GMT on that page.
Related: CWSU Center Weather Advisories PIREPs SIGMETs TAFs Temp/Winds Aloft
Backend documentation exists for those wishing to script against this service.
Shapefile DBF schema:
Field 0: Type=C/String, Title=`NAME', GML_ID + VALID_AT timestamp Field 1: Type=C/String, Title=`LABEL', Event label from GML_ID Field 2: Type=C/String, Title=`GML_ID', Verbatim GML_ID from product Field 3: Type=C/String, Title=`VALID_AT', UTC Valid At time (gml:timePosition) Field 4: Type=C/String, Title=`VALID_FM', UTC From Time (G-AIRMETVALIDFROM) Field 5: Type=C/String, Title=`VALID_TO', UTC To Time (G-AIRMETVALIDTO) Field 6: Type=C/String, Title=`ISSUTIME', UTC Issue Time (G-AIRMETISSUETIME) Field 7: Type=C/String, Title=`PROD_ID', IEM Text Product ID Field 8: Type=C/String, Title=`STATUS', Status of AIRMET Field 9: Type=C/String, Title=`HZTYPE', Hazard Type Field 10: Type=C/String, Title=`WXCOND', Comma list of weather conditions