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WTNT80 EGRR 271618

 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC

 AND ATLANTIC

             GLOBAL MODEL DATA TIME 12UTC 27.07.2017

   TROPICAL DEPRESSION GREG       ANALYSED POSITION : 17.8N 144.8W

     ATCF IDENTIFIER : EP072017

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 27.07.2017  17.8N 144.8W     WEAK
 00UTC 28.07.2017        BELOW TROPICAL STORM STRENGTH

             HURRICANE HILARY     ANALYSED POSITION : 17.5N 115.6W

     ATCF IDENTIFIER : EP092017

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 27.07.2017  17.5N 115.6W   MODERATE
 00UTC 28.07.2017  18.1N 117.4W   MODERATE      LITTLE CHANGE
 12UTC 28.07.2017  18.8N 119.1W   MODERATE      LITTLE CHANGE
 00UTC 29.07.2017  19.7N 121.1W   MODERATE      LITTLE CHANGE
 12UTC 29.07.2017  20.5N 123.5W   MODERATE      LITTLE CHANGE
 00UTC 30.07.2017  20.9N 126.5W   MODERATE   WEAKENING SLIGHTLY
 12UTC 30.07.2017  20.6N 129.0W     WEAK     WEAKENING SLIGHTLY
 00UTC 31.07.2017  21.1N 129.6W     WEAK        LITTLE CHANGE
 12UTC 31.07.2017  22.2N 132.2W     WEAK        LITTLE CHANGE
 00UTC 01.08.2017  23.1N 134.0W     WEAK        LITTLE CHANGE
 12UTC 01.08.2017  23.1N 135.7W     WEAK        LITTLE CHANGE
 00UTC 02.08.2017  23.5N 137.5W     WEAK        LITTLE CHANGE
 12UTC 02.08.2017  23.3N 139.3W     WEAK        LITTLE CHANGE

        TROPICAL STORM IRWIN      ANALYSED POSITION : 14.7N 124.0W

     ATCF IDENTIFIER : EP102017

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 12UTC 27.07.2017  14.7N 124.0W   MODERATE
 00UTC 28.07.2017  14.7N 124.5W   MODERATE      LITTLE CHANGE
 12UTC 28.07.2017  14.4N 124.9W   MODERATE      LITTLE CHANGE
 00UTC 29.07.2017  14.5N 124.7W   MODERATE      LITTLE CHANGE
 12UTC 29.07.2017  14.9N 124.0W   MODERATE      LITTLE CHANGE
 00UTC 30.07.2017  17.0N 123.5W   MODERATE      LITTLE CHANGE
 12UTC 30.07.2017        BELOW TROPICAL STORM STRENGTH

             NEW TROPICAL STORM FORECAST TO DEVELOP AFTER  54 HOURS
                   FORECAST POSITION AT T+ 54 :  8.8N  39.9W

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 00UTC 30.07.2017   9.1N  40.0W     WEAK     WEAKENING SLIGHTLY
 12UTC 30.07.2017  10.1N  39.4W     WEAK        LITTLE CHANGE
 00UTC 31.07.2017  11.0N  39.7W     WEAK        LITTLE CHANGE
 12UTC 31.07.2017  11.0N  39.7W     WEAK        LITTLE CHANGE
 00UTC 01.08.2017  11.6N  39.6W     WEAK        LITTLE CHANGE
 12UTC 01.08.2017  13.7N  40.3W     WEAK        LITTLE CHANGE
 00UTC 02.08.2017        BELOW TROPICAL STORM STRENGTH

             NEW TROPICAL STORM FORECAST TO DEVELOP AFTER  78 HOURS
                   FORECAST POSITION AT T+ 78 : 11.5N  32.4W

  VERIFYING TIME     POSITION     STRENGTH        TENDENCY
  --------------     --------     --------        --------
 00UTC 31.07.2017  11.9N  32.7W     WEAK      WEAKENING RAPIDLY
 12UTC 31.07.2017  13.2N  33.7W     WEAK        LITTLE CHANGE
 00UTC 01.08.2017  12.1N  39.0W     WEAK        LITTLE CHANGE
 12UTC 01.08.2017        BELOW TROPICAL STORM STRENGTH


 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 271618