000
WTNT80 EGRR 041800

 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC

 AND ATLANTIC

             GLOBAL MODEL DATA TIME 12UTC 04.09.2011

             HURRICANE KATIA      ANALYSED POSITION : 21.6N  58.8W

     ATCF IDENTIFIER : AL122011

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 04.09.2011  21.6N  58.8W    STRONG
 00UTC 05.09.2011  23.1N  60.5W    STRONG   INTENSIFYING SLIGHTLY
 12UTC 05.09.2011  24.3N  62.1W   INTENSE       LITTLE CHANGE
 00UTC 06.09.2011  25.5N  63.7W   INTENSE   INTENSIFYING SLIGHTLY
 12UTC 06.09.2011  26.3N  65.2W   INTENSE       LITTLE CHANGE
 00UTC 07.09.2011  26.8N  66.6W   INTENSE       LITTLE CHANGE
 12UTC 07.09.2011  27.1N  68.1W    STRONG    WEAKENING SLIGHTLY
 00UTC 08.09.2011  27.3N  70.1W    STRONG       LITTLE CHANGE
 12UTC 08.09.2011  27.8N  71.9W    STRONG       LITTLE CHANGE
 00UTC 09.09.2011  28.5N  72.9W   INTENSE   INTENSIFYING SLIGHTLY
 12UTC 09.09.2011  29.2N  73.7W    STRONG    WEAKENING SLIGHTLY
 00UTC 10.09.2011  30.7N  73.3W   INTENSE   INTENSIFYING SLIGHTLY
 12UTC 10.09.2011  32.5N  72.2W   INTENSE   INTENSIFYING RAPIDLY

        TROPICAL STORM LEE        ANALYSED POSITION : 29.8N  91.9W

     ATCF IDENTIFIER : AL132011

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 04.09.2011  29.8N  91.9W   MODERATE
 00UTC 05.09.2011  30.1N  92.0W   MODERATE   WEAKENING SLIGHTLY
 12UTC 05.09.2011  29.8N  90.8W   MODERATE   WEAKENING SLIGHTLY
 00UTC 06.09.2011  30.6N  88.5W   MODERATE     LITTLE CHANGE
 12UTC 06.09.2011  32.4N  87.2W     WEAK     WEAKENING RAPIDLY
 00UTC 07.09.2011  32.7N  87.4W     WEAK     WEAKENING RAPIDLY
 12UTC 07.09.2011     BELOW TROPICAL STORM STRENGTH

             NEW TROPICAL STORM FORECAST TO DEVELOP AFTER  36 HOURS
                   FORECAST POSITION AT T+ 36 : 10.5N 135.8W

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 00UTC 06.09.2011  10.5N 135.8W     WEAK
 12UTC 06.09.2011  10.1N 135.6W     WEAK        LITTLE CHANGE
 00UTC 07.09.2011   9.7N 135.5W     WEAK        LITTLE CHANGE
 12UTC 07.09.2011   9.8N 134.9W     WEAK        LITTLE CHANGE
 00UTC 08.09.2011  10.4N 135.1W     WEAK        LITTLE CHANGE
 12UTC 08.09.2011  11.5N 135.5W     WEAK        LITTLE CHANGE
 00UTC 09.09.2011  12.3N 136.3W     WEAK        LITTLE CHANGE
 12UTC 09.09.2011  13.0N 137.0W   MODERATE      LITTLE CHANGE
 00UTC 10.09.2011  13.5N 137.4W   MODERATE      LITTLE CHANGE
 12UTC 10.09.2011  13.6N 137.9W     WEAK     WEAKENING SLIGHTLY


 THIS INFORMATION IS PROVIDED AS GUIDANCE FOR TROPICAL CYCLONE
 RSMCS. IT REQUIRES INTERPRETATION BY TROPICAL CYCLONE SPECIALISTS
 AND SHOULD NOT BE CONSIDERED AS A FINAL PRODUCT


 MET OFFICE, EXETER, UK

 TOO 041639