Investigate IWXXM data

[akrherz]

Looks interesting and may contain data I have been wondering about

``` NOUS41 KWBC 241430 SCNWSH

Service Change Notice 21-26
National Weather Service Headquarters Silver Spring MD
1030 AM EST Wed Feb 24 2021

To: Subscribers
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-NOAAPort
Other NWS Partners, Users and Employees

From: Bruce Entwistle
Chief, Aviation and Space Weather Services Branch

Subject: ICAO Meteorological Information Exchange Model (IWXXM)
products
for aviation
will become operational on or around May 4, 2021

NWS will be introducing International Civil Aviation Organization
(ICAO)
Meteorological
Information Exchange Model (IWXXM) products for aviation on or around
May
4, 2021.
These products include eXtensible Markup Language (XML) based
representations for
products standardized in ICAO Annex 3 and World Meteorological
Organization
(WMO)
No. 49, Volume II. XML products including IWXXM are used for
machine-to-machine
operational exchanges of meteorological information used in aviation.

When implemented, the WMO ID headers below identify products that
users can
access
via the NWS Telecommunication Gateway (NWSTG) under WMO defined T1T2
(from
TTAAii) headers for the following IWXXM data types:

LA -- Aviation Routine Report (METAR)
LC -- Aerodrome Forecast ("short" TAF) (valid times < 12 hours)
LK -- Tropical Cyclone Advisory
LN -- Space Weather Advisory (SWXA)
LP -- Special Aviation Weather Reports (SPECI)
LS -- Significant Meteorological Information (SIGMET)
LT -- Aerodrome Forecast ("long" TAF) (valid times >= 12 hours)
LU -- Volcanic Ash Advisory
LV -- Aviation Volcanic Ash Warning (VA SIGMET)
LW -- Airmen's Meteorological Information (AIRMET)
LY -- Aviation Tropical Cyclone Warning (TC SIGMET)

NWS has already extended the use of XML formatted data to other
non-aviation
operational products (e.g., Common Alerting Protocol [CAP] messages),
and
with
appropriate notification may extend the use of XML formatted data to
other
existing
operational NWS products.

Until the implementation date, global formatted IWXXM products may
become
available in
parallel with the Traditional Alphanumeric Content (TAC) OPerational
METeorological
(OPMET) data.

For examples of real-time US Terminal Aerodrome Forecasts (TAFs) in
IWXXM
version
3.0, go to the following link.
https://tgftp.nws.noaa.gov/data/raw/lt/

The TAF, Volcanic Ash Advisory, and Space Weather Advisories will be
the
first U.S.
aviation products available from the Washington OPMET databank and
the WAFC
Internet File Service (WIFS) later this year.

More information about IWXXM files can be found in the Product
Description
Document
(PDD) linked below:
https://nws.weather.gov/products/PDD/PDD_IWXXM_Operational_2021.pdf

For more information or questions, please contact:

Michael L. Graf
Meteorologist/International Liaison
National Weather Service
Silver Spring, MD 20910
301-427-9109
michael.graf@noaa.gov

National Service Change Notices are available online at:
https://www.weather.gov/notification/

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