WTNT82 EGRR 041612



  MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC



             GLOBAL MODEL DATA TIME 1200UTC 04.09.2017



             HURRICANE IRMA       ANALYSED POSITION : 16.7N  52.7W



     ATCF IDENTIFIER : AL112017



                        LEAD                 CENTRAL     MAXIMUM WIND

      VERIFYING TIME    TIME   POSITION   PRESSURE (MB)  SPEED (KNOTS)

      --------------    ----   --------   -------------  -------------

    1200UTC 04.09.2017    0  16.7N  52.7W      965            69

    0000UTC 05.09.2017   12  16.3N  54.8W      968            75

    1200UTC 05.09.2017   24  16.2N  57.2W      963            80

    0000UTC 06.09.2017   36  16.6N  59.3W      963            73

    1200UTC 06.09.2017   48  17.3N  61.7W      961            78

    0000UTC 07.09.2017   60  18.0N  64.3W      958            78

    1200UTC 07.09.2017   72  18.6N  67.0W      949            90

    0000UTC 08.09.2017   84  19.2N  69.4W      949            83

    1200UTC 08.09.2017   96  19.5N  72.4W      979            62

    0000UTC 09.09.2017  108  19.8N  74.5W      970            67

    1200UTC 09.09.2017  120  20.5N  76.6W      964            60

    0000UTC 10.09.2017  132  21.3N  78.1W      962            68

    1200UTC 10.09.2017  144  22.6N  78.8W      945            83



       NEW TROPICAL CYCLONE FORECAST TO DEVELOP AFTER  72 HOURS

              FORECAST POSITION AT T+ 72 : 20.7N  94.5W



                        LEAD                 CENTRAL     MAXIMUM WIND

      VERIFYING TIME    TIME   POSITION   PRESSURE (MB)  SPEED (KNOTS)

      --------------    ----   --------   -------------  -------------

    1200UTC 07.09.2017   72  20.7N  94.5W     1007            30

    0000UTC 08.09.2017   84  20.5N  94.4W     1005            36

    1200UTC 08.09.2017   96  20.2N  95.2W     1001            50

    0000UTC 09.09.2017  108  20.4N  95.9W     1002            47

    1200UTC 09.09.2017  120  20.9N  96.6W     1008            25

    0000UTC 10.09.2017  132              CEASED TRACKING



       NEW TROPICAL CYCLONE FORECAST TO DEVELOP AFTER 126 HOURS

              FORECAST POSITION AT T+126 : 10.2N 138.6W



                        LEAD                 CENTRAL     MAXIMUM WIND

      VERIFYING TIME    TIME   POSITION   PRESSURE (MB)  SPEED (KNOTS)

      --------------    ----   --------   -------------  -------------

    0000UTC 10.09.2017  132  10.5N 138.7W     1008            21

    1200UTC 10.09.2017  144  11.1N 139.0W     1008            21





 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 041611