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Model/ReleaseDateRelease ArtifactsProductsNotes
IWXXM   Official ICAO/WMO products from ICAO Annex 3 / WMO No. 49
IWXXM 2.1Apr 2017

Release bundles

Online schemas

ICAO METAR/SPECI, TAF, SIGMET, AIRMET, Volcanic Ash Advisory (VAA), Tropical Cyclone Advisory (TCA)AIRMET and SIGMET fixed to handle multiple OBS/FCST and FCST positions, other bug fixes
IWXXM 2.0Aug 2016

Release bundles

Online schemas

ICAO METAR/SPECI, TAF, SIGMET, AIRMET, Volcanic Ash Advisory (VAA), Tropical Cyclone Advisory (TCA)Added AIRMET, TCA, and VAA products along with a number of other improvements
IWXXM 1.1Mar 2015

Release bundles  

 Online schemas 

ICAO METAR/SPECI, TAF, SIGMETMinor bug fixes and improvements
IWXXM 1.0Sep 2013Online schemas 

ICAO METAR/SPECI, TAF, SIGMET

Initial release with four products - more to be included in subsequent releases
WXXM    

WXXM 2.0

Mar 2015

Release bundles

Online schemas

 

General purpose coverages

ICAO SigWx

ICAO AIRMET

ICAO Volcanic Ash Advisory

ICAO products are deprecated once they have been represented in IWXXM
WXXM 1.1Mar 2010 

General purpose coverages, contours, gust front, motion vector,

ICAO METAR/SPECI, TAF, AIRMET, SIGMET, VA Advisory

WMO AMDAR/MDCR, AIREP

G-AIRMET, PIREP, CCFP

 

Deprecated in favor of WXXM 2.0.  Additionally, ICAO products have been replaced by the authoritative IWXXM representations
WXXM 1.02007 Initial representations of ICAO Annex 3 ProductsDeprecated in favor of WXXM 1.1.  ICAO products have been replaced by the authoritative IWXXM representations

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This section lists the current representation to use for each product.  Last updated 17 November 19 April 2016.

ProductModel
METAR/SPECI

ICAO: IWXXM 2.01

ICAO/US: IWXXM-US 2.0

TAF

ICAO: IWXXM 2.01

ICAO/US: IWXXM-US 2.0
SIGMET

ICAO: IWXXM 2.01

ICAO/US: IWXXM-US 2.0
AMDARUSWx 1.0
AIRMETICAO: IWXXM 2.01
PIREPUSWx 1.0
AIREPUSWx 1.0

Weakly-typed information, or data without an existing representation

(such as loose collections of point data without a consistent set of values)

WXXM 2 Coverages
Volcanic Ash AdvisoryIWXXM 2.01
Tropical Cyclone AdvisoryIWXXM 2.01