000 WTNT80 EGRR 081617 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 08.09.2017 HURRICANE IRMA ANALYSED POSITION : 21.7N 74.6W ATCF IDENTIFIER : AL112017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 08.09.2017 21.7N 74.6W INTENSE 00UTC 09.09.2017 22.2N 77.1W INTENSE WEAKENING RAPIDLY 12UTC 09.09.2017 22.4N 78.8W INTENSE WEAKENING SLIGHTLY 00UTC 10.09.2017 22.9N 80.2W INTENSE LITTLE CHANGE 12UTC 10.09.2017 24.1N 81.1W INTENSE INTENSIFYING RAPIDLY 00UTC 11.09.2017 25.8N 81.6W INTENSE INTENSIFYING SLIGHTLY 12UTC 11.09.2017 28.3N 82.0W INTENSE WEAKENING RAPIDLY 00UTC 12.09.2017 31.6N 82.9W STRONG WEAKENING RAPIDLY 12UTC 12.09.2017 34.2N 84.8W MODERATE WEAKENING RAPIDLY 00UTC 13.09.2017 35.4N 87.7W MODERATE WEAKENING SLIGHTLY 12UTC 13.09.2017 35.0N 88.6W WEAK WEAKENING SLIGHTLY 00UTC 14.09.2017 BELOW TROPICAL STORM STRENGTH HURRICANE JOSE ANALYSED POSITION : 16.1N 56.1W ATCF IDENTIFIER : AL122017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 08.09.2017 16.1N 56.1W INTENSE 00UTC 09.09.2017 16.9N 58.3W STRONG WEAKENING RAPIDLY 12UTC 09.09.2017 17.8N 60.2W STRONG WEAKENING SLIGHTLY 00UTC 10.09.2017 19.3N 62.1W STRONG LITTLE CHANGE 12UTC 10.09.2017 21.0N 64.4W STRONG LITTLE CHANGE 00UTC 11.09.2017 23.0N 66.3W STRONG LITTLE CHANGE 12UTC 11.09.2017 24.7N 67.9W STRONG LITTLE CHANGE 00UTC 12.09.2017 25.8N 68.9W STRONG LITTLE CHANGE 12UTC 12.09.2017 26.3N 68.7W STRONG INTENSIFYING SLIGHTLY 00UTC 13.09.2017 26.3N 67.6W INTENSE INTENSIFYING SLIGHTLY 12UTC 13.09.2017 25.8N 66.5W INTENSE INTENSIFYING RAPIDLY 00UTC 14.09.2017 24.9N 66.0W INTENSE INTENSIFYING RAPIDLY 12UTC 14.09.2017 23.7N 66.7W INTENSE LITTLE CHANGE HURRICANE 13L ANALYSED POSITION : 21.3N 95.8W ATCF IDENTIFIER : AL132017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 08.09.2017 21.3N 95.8W MODERATE 00UTC 09.09.2017 20.9N 96.8W MODERATE LITTLE CHANGE 12UTC 09.09.2017 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 78 HOURS FORECAST POSITION AT T+ 78 : 12.4N 125.8W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 12.09.2017 12.3N 125.1W WEAK WEAKENING SLIGHTLY 12UTC 12.09.2017 12.5N 124.0W WEAK LITTLE CHANGE 00UTC 13.09.2017 12.4N 123.0W WEAK LITTLE CHANGE 12UTC 13.09.2017 12.2N 121.7W WEAK LITTLE CHANGE 00UTC 14.09.2017 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 114 HOURS FORECAST POSITION AT T+114 : 13.9N 113.9W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 13.09.2017 14.2N 114.0W WEAK LITTLE CHANGE 00UTC 14.09.2017 15.0N 115.1W WEAK LITTLE CHANGE 12UTC 14.09.2017 16.0N 116.6W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 120 HOURS FORECAST POSITION AT T+120 : 10.6N 129.9W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 13.09.2017 10.6N 129.9W WEAK 00UTC 14.09.2017 10.6N 128.9W WEAK LITTLE CHANGE 12UTC 14.09.2017 10.9N 127.5W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 132 HOURS FORECAST POSITION AT T+132 : 10.1N 26.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 14.09.2017 10.1N 26.3W WEAK 12UTC 14.09.2017 10.7N 30.2W WEAK INTENSIFYING 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. 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 081617