101 WTNT80 EGRR 141600 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 14.09.2018 TROPICAL DEPRESSION 95L ANALYSED POSITION : 25.9N 96.7W ATCF IDENTIFIER : AL952018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2018 25.9N 96.7W WEAK 00UTC 15.09.2018 27.2N 97.7W WEAK LITTLE CHANGE 12UTC 15.09.2018 28.1N 98.7W WEAK LITTLE CHANGE 00UTC 16.09.2018 BELOW TROPICAL STORM STRENGTH HURRICANE FLORENCE ANALYSED POSITION : 34.0N 77.8W ATCF IDENTIFIER : AL062018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2018 34.0N 77.8W INTENSE 00UTC 15.09.2018 33.9N 78.5W STRONG WEAKENING RAPIDLY 12UTC 15.09.2018 33.6N 79.3W MODERATE WEAKENING RAPIDLY 00UTC 16.09.2018 33.7N 80.1W MODERATE WEAKENING SLIGHTLY 12UTC 16.09.2018 34.3N 81.8W MODERATE WEAKENING SLIGHTLY 00UTC 17.09.2018 36.1N 83.7W WEAK WEAKENING SLIGHTLY 12UTC 17.09.2018 38.0N 84.7W WEAK LITTLE CHANGE 00UTC 18.09.2018 38.8N 83.4W WEAK LITTLE CHANGE 12UTC 18.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM HELENE ANALYSED POSITION : 31.6N 36.8W ATCF IDENTIFIER : AL082018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2018 31.6N 36.8W MODERATE 00UTC 15.09.2018 35.2N 36.2W STRONG INTENSIFYING SLIGHTLY 12UTC 15.09.2018 38.1N 34.3W STRONG INTENSIFYING RAPIDLY 00UTC 16.09.2018 40.0N 30.8W STRONG LITTLE CHANGE 12UTC 16.09.2018 42.6N 26.0W STRONG LITTLE CHANGE 00UTC 17.09.2018 45.3N 21.3W STRONG LITTLE CHANGE 12UTC 17.09.2018 48.1N 14.5W STRONG WEAKENING SLIGHTLY 00UTC 18.09.2018 54.3N 5.6W MODERATE WEAKENING SLIGHTLY 12UTC 18.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL DEPRESSION ISAAC ANALYSED POSITION : 15.5N 66.1W ATCF IDENTIFIER : AL092018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2018 15.5N 66.1W WEAK 00UTC 15.09.2018 15.8N 68.6W WEAK LITTLE CHANGE 12UTC 15.09.2018 15.9N 71.0W WEAK LITTLE CHANGE 00UTC 16.09.2018 16.9N 72.4W WEAK LITTLE CHANGE 12UTC 16.09.2018 18.2N 74.8W WEAK LITTLE CHANGE 00UTC 17.09.2018 19.0N 76.6W WEAK LITTLE CHANGE 12UTC 17.09.2018 19.9N 78.8W WEAK LITTLE CHANGE 00UTC 18.09.2018 20.5N 80.8W WEAK LITTLE CHANGE 12UTC 18.09.2018 21.4N 82.6W WEAK LITTLE CHANGE 00UTC 19.09.2018 22.2N 84.5W WEAK LITTLE CHANGE 12UTC 19.09.2018 22.5N 86.9W WEAK LITTLE CHANGE 00UTC 20.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM JOYCE ANALYSED POSITION : 31.6N 44.7W ATCF IDENTIFIER : AL102018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2018 31.6N 44.7W WEAK 00UTC 15.09.2018 31.2N 44.1W WEAK LITTLE CHANGE 12UTC 15.09.2018 31.9N 42.4W WEAK LITTLE CHANGE 00UTC 16.09.2018 33.1N 39.8W WEAK LITTLE CHANGE 12UTC 16.09.2018 34.5N 37.3W WEAK LITTLE CHANGE 00UTC 17.09.2018 34.6N 33.8W WEAK LITTLE CHANGE 12UTC 17.09.2018 34.2N 30.0W WEAK LITTLE CHANGE 00UTC 18.09.2018 33.1N 27.7W WEAK LITTLE CHANGE 12UTC 18.09.2018 32.5N 27.4W WEAK LITTLE CHANGE 00UTC 19.09.2018 32.7N 27.2W WEAK LITTLE CHANGE 12UTC 19.09.2018 33.1N 27.0W WEAK LITTLE CHANGE 00UTC 20.09.2018 33.4N 26.2W WEAK LITTLE CHANGE 12UTC 20.09.2018 33.1N 25.4W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 138 HOURS FORECAST POSITION AT T+138 : 27.0N 72.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.09.2018 27.1N 72.6W WEAK INTENSIFYING RAPIDLY 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 141600