000
WTNT80 EGRR 041611

 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC

 AND ATLANTIC

             GLOBAL MODEL DATA TIME 12UTC 04.09.2017

             HURRICANE IRMA       ANALYSED POSITION : 16.7N  52.7W

     ATCF IDENTIFIER : AL112017

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 04.09.2017  16.7N  52.7W    STRONG
 00UTC 05.09.2017  16.3N  54.8W    STRONG       LITTLE CHANGE
 12UTC 05.09.2017  16.2N  57.2W    STRONG   INTENSIFYING SLIGHTLY
 00UTC 06.09.2017  16.6N  59.3W    STRONG       LITTLE CHANGE
 12UTC 06.09.2017  17.3N  61.7W    STRONG       LITTLE CHANGE
 00UTC 07.09.2017  18.0N  64.3W   INTENSE       LITTLE CHANGE
 12UTC 07.09.2017  18.6N  67.0W   INTENSE   INTENSIFYING SLIGHTLY
 00UTC 08.09.2017  19.2N  69.4W   INTENSE       LITTLE CHANGE
 12UTC 08.09.2017  19.5N  72.4W    STRONG     WEAKENING RAPIDLY
 00UTC 09.09.2017  19.8N  74.5W    STRONG   INTENSIFYING SLIGHTLY
 12UTC 09.09.2017  20.5N  76.6W    STRONG   INTENSIFYING SLIGHTLY
 00UTC 10.09.2017  21.3N  78.1W    STRONG       LITTLE CHANGE
 12UTC 10.09.2017  22.6N  78.8W   INTENSE   INTENSIFYING RAPIDLY

             NEW TROPICAL STORM FORECAST TO DEVELOP AFTER  72 HOURS
                   FORECAST POSITION AT T+ 72 : 20.7N  94.5W

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 07.09.2017  20.7N  94.5W     WEAK
 00UTC 08.09.2017  20.5N  94.4W     WEAK        LITTLE CHANGE
 12UTC 08.09.2017  20.2N  95.2W     WEAK    INTENSIFYING SLIGHTLY
 00UTC 09.09.2017  20.4N  95.9W     WEAK        LITTLE CHANGE
 12UTC 09.09.2017  20.9N  96.6W     WEAK     WEAKENING SLIGHTLY
 00UTC 10.09.2017        BELOW TROPICAL STORM STRENGTH

             NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 126 HOURS
                   FORECAST POSITION AT T+126 : 10.2N 138.6W

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 00UTC 10.09.2017  10.5N 138.7W     WEAK      WEAKENING RAPIDLY
 12UTC 10.09.2017  11.1N 139.0W     WEAK        LITTLE CHANGE


 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.

 BULLETINS ARE NOW AVAILABLE WHICH PROVIDE EXPLICIT GUIDANCE
 ON CENTRAL PRESSURE AND MAXIMUM WIND SPEED.
 FOR FURTHER INFORMATION CONTACT TROPICAL_CYCLONES@METOFFICE.GOV.UK

 MET OFFICE, EXETER, UK

 TOO 041611