EUR Data Management Group

IWXXM-Details

On this page you will find information on the currently valid versions of the IWXXM-schemas as well as a table with TAC-message headers for OPMET-data and correcponding IWXXM-header.

If you want to have more information presented on this page, feel free to contact your responsible ROC.

Currently valid IWXXM-schema versions

The following table is based on information available on the 19.12.2022 and taken from the WMO-Community website.

IWXXM-Version METAR/SPECI TAF SIGMET AIRMET TCA VAA SWA WAFS SIGWX F/C Requirements
1.1.0 1.1.0 1.1.0 1.1.0 N/A N/A N/A N/A N/A AMD76
2.1.0 2.1.0 2.1.0 2.1.0 2.1.0 2.1.0 2.1.0 N/A N/A AMD77
3.0.0 3.0.0 3.0.0 3.0.0 3.0.0 3.0.0 3.0.0 3.0.0 N/A AMD78
New versioning schema introduced
2021-2 3.1.0 3.0.1 4.0.0 3.1.0 3.1.0 3.1.0 3.0.1 1.0.0 AMD79 & AMD80

OPMET-Data Header Information

The following table provides information on the first two letters of the buleltins headers (T1T2) for TAC-OPMET data and the corresponding IWXXM-versions (where applicable).

Message Type TT (TAC) TT (IWXXM)
METAR/SPECI SA/SP LA/LP
9 HR TAF FC LC
24/30 HR TAF FT LT
SIGMET WS LS
Tropical Cyclone SIGMET WC LY
Volcanic Ash SIGMET WV LV
AIRMET WA LW
GAMET FA N/A
Special AIREP (ARS) UA N/A
Volcanic Ash Advisory FV LU
Tropical Cyclone Advisory FK LK
Space Weather Advisory FN LN