Volume C1 - Catalogue of Meteorological Bulletins

Weather Reporting (WMO-No. 9)


Part 1 - Observational Data
          Part 2 - GRID and GRIB Bulletins

This Publication contains the list of meteorological bulletins for global, inter-regional and regional exchange on the Global Telecommunication System:


The 3rd session of Commission for Observation, Infrastructure, and Information Systems (INFCOM-3) which was held from 15 to 19 April 2024 approved the TRANSITION FROM WIS 1.0 AND GLOBAL TELECOMMUNICATION SYSTEM (GTS) TO WIS 2.0, INCLUDING CAPACITY DEVELOPMENT, which will be endorsed by the forthcoming EC-78 to be held in June 2024.

One of the decisions is that the Manual on the Global Telecommunication System (WMO-No. 386) will no longer be updated from 31 December 2024. At the same time, MetNo and VolC1 will not be updated starting 1 January 2025.

Last updated: 24 May 2024

Volume C1 

METNO Service 

      The WMO Secretariat migrated the WMO FTP server to the WMO SFTP server on 14 July 2021. More information can be found here.

Abbreviated headings (TTAAii CCCC)

Updating procedures and method of notifying the WMO Secretariat of amendments:


Who maintains the Catalogue

World Meteorological Centres (WMCs) and the Regional Telecommunication Hubs (RTHs) on the Main Telecommunication Network (MTN) shall maintain the Catalogue of Meteorological Bulletins as regards bulletins issued from the zone for which they are responsible for the collection, exchange and distribution of data, and also including data from the Antarctica, as appropriate.