• UK Met Office has terminated transmission of their TAC SYNOP on GTS on Nov 3 2014.  As announced in METNO C Sep 9 2014  
• Netherland  has terminated transmission of their  TAC SYNOP  on GTS on Nov 3 2014.  As announced in  METNO C Oct 7 2014  
• Ireland announced their TAC SYNOP terminated on Nov 4 2014.  Source: METNO C Sep 30 2014 ftp://ftp.wmo.int/wmo-ddbs/OperationalInfo/VolumeC1/From_WMO/METNO/2014/MC4014.txt  
• New Zealand announced their TAC SYNOP terminates on December 15 2014 in METNO C November 11 ftp://ftp.wmo.int/wmo-ddbs/OperationalInfo/VolumeC1/From_WMO/METNO/2014/MC4614.txt ; actual messages seem to stop on December 18.  They were restarted about two days later after requests and then stopped on 19 May 2015. 
  
• Hungary terminated transmission of their TAC SYNOP  on GTS on May 18 2015. METNO C, May 2015 ftp://ftp.wmo.int/wmo-ddbs/OperationalInfo/VolumeC1/From_WMO/METNO/2015/MC2215.txt
  
• Portugal announced that its TAC SYNOP reports will cease on 22 April 2015 - now postponed to 24 June, SYNOPs still on GTS Nov 2015.  (Indirect notification received at ECMWF 2 March 2015, update 13 March.) 
• Spain announced that its TAC SYNOP reports (including Canary Islands) will cease on 29 June 2015.  (Notification received at ECMWF April 2015, see http://www.wmo.int/pages/prog/www/ois/Operational_Information/Newsletters/current_news_en.html )  Some SYNOPs from Canary Islands still available Nov 2015.
  
• Germany announced that its TAC SYNOP reports will cease on 13 January 2016.  Source: METNO C Nov 18 2015 ftp://ftp.wmo.int/wmo-ddbs/OperationalInfo/VolumeC1/From_WMO/METNO/2015/MC4715.txt
• Cyprus announced that its TAC SYNOP reports will cease on 1 October 2016.  (Email seen April 2016.)
   
• Meteo France info on the transition from TAC2BUFR in their data assimilation systems (no short term plans for stopping TAC transmission) here

State of TAC SYNOP termination.  Orange: announced, purple: actually terminated.