:Product: 19981223GEOA.txt :Issued: 1998 Dec 23 0330 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # GEOALERT WWA357 UGEOA 20401 81223 0330/ 9935/ 11231 20233 30231 99999 UGEOE 20401 81223 0330/ 22/02 09102 0912/ 09132 9//99 01602 0//// ///// 9//// 23472 2347/ 23482 9//99 07702 0//// ///// 9//// 99999 UGEOI 20401 81223 0330/ 22/// 10056 21290 30030 49990 50000 65907 71804 80003 90200 99999 UGEOR 20401 81223 0330/ 22/24 23103 18415 20000 30200 43312 50070 60016 11120 17200 18416 20000 30200 44312 50130 60009 14519 04100 18417 20000 30000 41001 50000 60001 48623 01000 99999 PLAIN STRATWARM ALERT/TUESDAY/STRATWARM EXISTS. THE INTENSE WARMING,CENTRED OVER NORTH SIBERIA AND THE ADJA- CENT ARCTIC CONTINUOUSLY WEAKENING. THE ANTICYCLONE BETWEEN GREENLAND AND NORWAY WEAKENING TOO. MEAN ZONAL WIND AT 60N IS NO LONGER FROM EAST AND THE TEMPE- RATURE GRADIENT REVERSED BETWEEN 60N AND THE POLE ONLY STILL IN THE MIDDLE STRATOSPHERE. END OF THIS GEOALERT.