WTNT82 EGRR 040410



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



             GLOBAL MODEL DATA TIME 0000UTC 04.09.2017



             HURRICANE IRMA       ANALYSED POSITION : 17.2N  50.2W



     ATCF IDENTIFIER : AL112017



                        LEAD                 CENTRAL     MAXIMUM WIND

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

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

    0000UTC 04.09.2017    0  17.2N  50.2W      972            68

    1200UTC 04.09.2017   12  16.5N  52.4W      971            69

    0000UTC 05.09.2017   24  16.3N  54.3W      970            70

    1200UTC 05.09.2017   36  16.4N  56.4W      968            73

    0000UTC 06.09.2017   48  16.7N  58.4W      968            72

    1200UTC 06.09.2017   60  17.7N  60.5W      961            78

    0000UTC 07.09.2017   72  18.6N  62.9W      955            79

    1200UTC 07.09.2017   84  19.4N  65.5W      948            87

    0000UTC 08.09.2017   96  19.8N  67.9W      946            84

    1200UTC 08.09.2017  108  20.0N  70.1W      948            87

    0000UTC 09.09.2017  120  20.0N  72.0W      959            78

    1200UTC 09.09.2017  132  20.2N  73.8W      966            72

    0000UTC 10.09.2017  144  20.6N  75.2W      965            76



       NEW TROPICAL CYCLONE FORECAST TO DEVELOP AFTER  60 HOURS

              FORECAST POSITION AT T+ 60 : 13.4N  42.0W



                        LEAD                 CENTRAL     MAXIMUM WIND

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

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

    1200UTC 06.09.2017   60  13.4N  42.0W     1011            25

    0000UTC 07.09.2017   72  14.4N  45.4W     1010            28

    1200UTC 07.09.2017   84  15.1N  49.0W     1005            36

    0000UTC 08.09.2017   96  16.1N  52.1W     1003            47

    1200UTC 08.09.2017  108  17.3N  55.1W     1002            48

    0000UTC 09.09.2017  120  18.5N  57.9W     1002            47

    1200UTC 09.09.2017  132  19.4N  60.2W     1004            39

    0000UTC 10.09.2017  144  20.7N  61.8W     1004            38



       NEW TROPICAL CYCLONE FORECAST TO DEVELOP AFTER  66 HOURS

              FORECAST POSITION AT T+ 66 : 21.6N  95.3W



                        LEAD                 CENTRAL     MAXIMUM WIND

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

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

    0000UTC 07.09.2017   72  21.5N  94.7W     1006            32

    1200UTC 07.09.2017   84  21.2N  94.5W     1002            34

    0000UTC 08.09.2017   96  21.3N  94.9W      993            50

    1200UTC 08.09.2017  108  20.9N  95.4W      983            67

    0000UTC 09.09.2017  120  20.8N  96.1W      983            65

    1200UTC 09.09.2017  132  20.5N  97.4W     1004            33

    0000UTC 10.09.2017  144              CEASED TRACKING





 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 040410