Update to Aerodrome Reports and Forecasts: A Users Handbook to the Codes (WMO-No. 782) - SERCOM-3 Session
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
