Update to Aerodrome Reports and Forecasts: A Users Handbook to the Codes (WMO-No. 782) - SERCOM-3 Session
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Agenda
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4.3(2)
Update to Aerodrome Reports and Forecasts: A Users’
Handbook to the Codes (WMO-No. 782)
Bali, Indonesia
4-9 March 2024
Presented by:
Greg Brock
Head, Services for
Aviation Division, WMO
PPT 4.3(2) last updated on 26 February 2024
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A simple guide to the encoding and decoding of
aeronautical meteorological codes
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METAR and SPECI, including TREND, and TAF
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Target audience: Aviation users and
meteorological observers
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Updated once every 2 or 3 years, typically
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Alignment with ICAO Annex 3,
Meteorological
Service for International Air Navigation
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Relevance of
Manual on Codes
(WMO-No. 306)
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Last updated in 2022
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No major changes
to aeronautical meteorological codes proposed in
Amendment 82 (was 81) of ICAO Annex 3
•
But, some
minor changes
associated with:
•
Number of RVR groups
that can be reported in METAR/SPECI in alphanumeric code
versus IWXXM form
•
T
air
and T
dew
in tenths of a degree Celsius
when METAR/SPECI disseminated in
IWXXM form
•
Therefore,
minor 2025 update
to WMO-No. 782 prepared by SC-AVI
•
Note, processing of the update to WMO-No. 782 is contingent on the
adoption by ICAO, in early 2025, of Amendment 82 (was 81) of Annex 3
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Draft Decision 4.3(2)/1 (SERCOM-3)
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SERCOM decides to endorse a proposed 2025 update to
Aerodrome
Reports and Forecasts: A Users’ Handbook to the Codes
(WMO-No.
782)
Thank you
wmo.int
Presentation on the proposed 2025 update to the Aerodrome Reports and Forecasts handbook during the SERCOM-3 session in Bali. The update focuses on minor changes to aeronautical meteorological codes related to METAR and SPECI reports, aligning with ICAO Annex 3. The content includes background information, scope of update, and expected action by SERCOM concerning the endorsement of the handbook update.
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Presentation Transcript
SERCOM-3 Third session of the Commission for Weather, Climate, Hydrological, Marine and Related Environmental Services and Applications Agenda Item 4.3(2) Update to Aerodrome Reports and Forecasts: A Users Handbook to the Codes (WMO-No. 782) Bali, Indonesia 4-9 March 2024 Presented by: Greg Brock Head, Services for Aviation Division, WMO PPT 4.3(2) last updated on 26 February 2024
Content 1. Background 2. Scope of update 3. Expected Action
Background A simple guide to the encoding and decoding of aeronautical meteorological codes METAR and SPECI, including TREND, and TAF Target audience: Aviation users and meteorological observers Updated once every 2 or 3 years, typically Alignment with ICAO Annex 3, Meteorological Service for International Air Navigation Relevance of Manual on Codes (WMO-No. 306) Last updated in 2022
Scope of Update No major changes to aeronautical meteorological codes proposed in Amendment 82 (was 81) of ICAO Annex 3 But, some minor changes associated with: Number of RVR groups that can be reported in METAR/SPECI in alphanumeric code versus IWXXM form Tair and Tdew in tenths of a degree Celsius when METAR/SPECI disseminated in IWXXM form Therefore, minor 2025 update to WMO-No. 782 prepared by SC-AVI Note, processing of the update to WMO-No. 782 is contingent on the adoption by ICAO, in early 2025, of Amendment 82 (was 81) of Annex 3
Expected Action Draft Decision 4.3(2)/1 (SERCOM-3) SERCOM decides to endorse a proposed 2025 update to Aerodrome Reports and Forecasts: A Users Handbook to the Codes (WMO-No. 782)
Thank you wmo.int
