Latest Version of the Machine Readable Codes

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

Valid: 30 November 2023


  1. 30 November 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 FT2023-2 SharePoint
FM 92  GRIB edition 2
32 zip
FM 94  BUFR and FM 95 CREX 41 zip
Common Code Tables to Binary and Alphanumeric Codes 2023-11-30



~page last updated: 22 November 2023~