The following may be of concern to those who use GPS in   
   critical applications as well as mariners.   
      
   * Forwarded (from: netmail) by Richard Webb using timEd 1.10.y2k+.   
   * Originally from Richard Webb (1:116/901) to ncs@mmsn.org.   
   * Original dated: Tue Jun 05, 21:03   
      
   Colleagues:   
      
      
   This was sent by k1all to the intercon ncs list, am brieflyy summarizing here   
   from that alert.  It states;   
      
   Continuing until approximately 07 June  2012,  the  National Geospatial   
   Intelligence  Agency  (NGA)  has  promulgated  a NAVAREA warning regarding    
   the possibility  for  heightened levels  of  solar flare activity. Associated   
   with this solar activity is the  potential  for  disruptions  of  electronic   
   navigation,  high and low frequency radio transmissions, and other electronic   
   communications  methods.  As  such,  solar activity  has  the  potential  to   
   negatively impact mariners ability to navigate safely and communicate   
   effectively while underway.  It  is  therefore  recommended  that mariners not   
   solely rely on electronic  means  for  safe  navigation  and should     
   consider  ALL  alternate  means  to  verify  their position. Please see the   
   below message excerpt from the NGA.   
      
      
      
      
      
   FM NGA NAVSAFETY WASHINGTON DC   
      
   BT   
      
   UNCLASSIFIED//   
      
   MSGID/GENADMIN/NGA NAVSAFETY WASHINGTON DC//   
      
      
   SOLAR ACTIVITY.   
      
   1. HF AND LF COMMUNICATIONS MAY BE DISRUPTED BY THE EFFECTS   
       OF SOLAR FLARES.   
      
   2. DURING INCIDENTS AT SEA, MARINERS SHOULD CHECK THEIR   
       POSITION USING ALL ALTERNATE MEANS AVAILABLE.   
      
   3. CANCEL NAVAREA 292/12.   
      
   4. CANCEL THIS MSG 07 JUN.//   
      
   #0672   
      
   BT   
      
      
      
   Regards,   
              Richard   
   ___   
      
   ---   
    * Origin:  (1:116/901)