Latest Version of the Machine Readable Codes

for the Manual on Codes(WMO-No. 306), Volume I.2

Valid: 31 May 15 June 2023


  1. 15 June 2023 is the operational date of the latest versions. 
  2. The zip files contain machine-readable codes of GRIB, BUFR, CREX, and the Common Code Tables. These can be incorporated into encoders/decoders.
  3. If there are inconsistencies between the entries available below and the Manual on Codes, Volume I.2 (WMO-No. 306), the Manual prevails.
  4. View previous versions.

Machine Readable Codes



Parent directory of all machine-readable codes FT2023-1 SharePoint
FM 92  GRIB edition 2
31 txt/xml
FM 94  BUFR and FM 95 CREX 40 txt/xml
Common Code Tables to Binary and Alphanumeric Codes 2023-06-15



~page last updated: 2 June 2023~