Previous VERSIONS Activity Areas (1) WMO Information System (WIS) Previous Versions of the Machine Readable Codes for Manual on Codes, Volume I.2 ~page last updated: 27 June 2024~ Previous versions are available in zip files from the table below Versions before 16 November 2020 also contain doc and pdf files. BUFR tables version 13 and CREX tables version 5 have backward compatibility. Go to the latest version. Date of implementation GRIB2 BUFR/CREX Common Code Tables 30 November 2023 32 41 2023-11-30 15 June 2023 31 40 2023-06-15 15 Nov 2022 30 39 2022-11-15 15 May 2022 29.1 38.1 2022-05-15.2 15 Nov 2021 28 37 2021-11-15 15 June 2021 27 36 2021-06-15 16 November 2020 26 35.1 2020-11-16 6 May 2020 25 34 X 6 November 2019 24 33 X 3 September 2019 (pre-operational) 23.1.0 32.1.0 X 15 May 2019 23 32 X 7 November 2018 22 31 X 23 August 2018 (pre-operational) 21.1.0 2 May 2018 21 30 X 8 November 2017 20 29 X 3 May 2017 19 28 X 2 November 2016 18 27 X 22 September 2016 (pre-operational) 26.1.0 X 4 May 2016 17 26 X 11 November 2015 16 25 X 7 May 2015 (pre-operational) 15.1.0 6 May 2015 15 24 X 5 November 2014 14 23 X 7 May 2014 13 22 X 14 November 2013 12 21 X 8 May 2013 11 20 X 26 February 2013 (pre-operational) 10.0.1 19.1.1 X 7 November 2012 10 19 X 10 July 2012 (pre-operational) 9.1.0 18.1.0 X 2 May 2012 9 18 X 3 November 2011 (pre-operational) X 2 November 2011 8 17 X 15 September 2011 (pre-operational) X 4 May 2011 7 16 X 7 January 2011 (pre-operational) 15 (7 for CREX) X 15 September 2010 6 X 15 March 2010 (pre-operational) 5 14 (6 for CREX) X 7 January 2010 (pre-operational) 4 November 2009 7 November 2007 (retroactively processed in May 2018) 13 (5 for CREX) 7 November 2007 13 (5 for CREX)