WMO Secretariat updated its operational newsletter
http://www.wmo.int/pages/prog/www/ois/Operational_Information/Newsletters/current_news_en.html
They say:
"Adoption of amendments to the Manual on Codes (WMO No. 306) between CBS sessions
http://www.wmo.int/pages/prog/www/ois/Operational_Information/Newsletters/current_news_en.html
They say:
"Adoption of amendments to the Manual on Codes (WMO No. 306) between CBS sessions
In accordance with the Procedure for the Adoption of Amendments to the Manual on Codes between CBS sessions, and as concurred by the president of CBS, the WMO Circular letter No. OBS/WIS/DRMM/DRC (PR-6688) (English http://goo.gl/CaA3y, French http://goo.gl/tOXFP, Russian http://goo.gl/rx7ow, Spanish http://goo.gl/ZSOXx, Arabic http://goo.gl/l3xPA) dated 25 February 2013, including draft amendments to the Manual on Codes, was dispatched to all WMO Members for comments.
The WMO Secretariat received replies approving the draft amendments in the Circular letter by 24 April 2013. The amendments are therefore approved in accordance with the Procedure
The president of CBS agreed to notify all WMO Members and members of EC of the approval of the amendments by the WWW Operational Newsletter. The implementation date of amendments is on 14 November 2013."