This product has an updated version. See it on the new page: Prog Charts

Mid Level SIGWX Charts
Click on Image to expand

    Issue Time Product Update  
  Button Valid at 00Z 08Z   06:49z 04/01  
  Button Valid at 06Z 14Z   12:45z 03/31  
  Button Valid at 12Z 20Z   18:45z 03/31  
  02Z   00:49z 04/01  
* If a correction to a Significant Weather chart is required ... a text
product will be issued under WMO FXUS65 KKCI or WMO FXUK65 EGRR.