:Product: 19990224GEOA.txt :Issued: 1999 Feb 24 0330 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # GEOALERT WWA055 UGEOA 20401 90224 0330/ 9935/ 11241 20241 30241 99999 UGEOE 20401 90224 0330/ 23/00 99999 UGEOI 20401 90224 0330/ 23/// 10038 21270 30090 40000 50000 64407 71604 80103 90200 99999 UGEOR 20401 90224 0330/ 23/24 24103 18467 20000 30000 47201 50030 60001 42317 01000 18470 20000 30000 44312 50090 60003 25924 02000 18471 20000 30000 44312 50080 60004 15528 02000 99999 PLAIN STRATWARM ALERT/TUESDAY/STRATWARM EXISTS. A LARGE AND VERY INTENSE WARM REGION EXISTS FROM SOUTHERN EUROPE ACROSS SIBERIA/ALASKA AND THE ADJACENT ARCTIC TO WESTERN CANADA. WARM AIR IS SPREADING NORTH AND NORTHEASTWARDS. COLD AIR OVER THE EUROPEAN ARCTIC IS WEAKENING. TEMPERATURE GRADIENT IS REVERSED BETWEEN 60N AND THE POLE AT 10HPA, TODAY. MEAN ZONAL WIND AT 60N IS WEAKENING IN THE MIDDLE AND UPPER STRATOSPHERE. FINAL WARMING IS IN PROGRESS.