EXPLANATORY NOTES (6 May 2020) 1. Tables (txt and xml) included in the zip files are; GRIB edition 2 version 25(.0.0) Templates Code and Flag tables BUFR tables version 34(.0.0) Table A Table B (common in BUFR/CREX) Table C Table D Code and Flag tables (common in BUFR/CREX) CREX tables version 34(.0.0) Table A Table C Table D Common code tables effective as of 6 May 2020 Cover C-1 C-2 C-3 C-4 C-5 C-7 C-8 C-11 C-12 C-13 C-14 2. Changes from the previous versions (GRIB2 ver. 24, BUFR/CREX ver. 33, Common Code tables (6 November 2019)) are; New entries approved by FT2020-1 (first fast-track 2020) (effective as from 6 May 2020) https://community.wmo.int/activity-areas/wmo-codes/manual-codes/volume-i2 Purely editorial corrections 3. Character set employed is UTF-8. 4. Units in the GRIB2 code tables and the BUFR/CREX Table B (txt and xml) are represented by those in "Abbreviation in IA5/ASCII" column of the Common Code table C-6. 5. Notes to entries are available in doc and pdf files on the WMO server at; https://community.wmo.int/activity-areas/wmo-codes/manual-codes/latest-version 6. Sorting by "No" column might be necessary in files of text and xml forms.