539 WTNT80 EGRR 150400 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 15.09.2018 TROPICAL DEPRESSION 95L ANALYSED POSITION : 27.0N 97.1W ATCF IDENTIFIER : AL952018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 27.0N 97.1W WEAK 12UTC 15.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM FLORENCE ANALYSED POSITION : 33.9N 78.9W ATCF IDENTIFIER : AL062018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 33.9N 78.9W STRONG 12UTC 15.09.2018 33.5N 79.5W MODERATE WEAKENING SLIGHTLY 00UTC 16.09.2018 33.6N 80.2W MODERATE LITTLE CHANGE 12UTC 16.09.2018 34.2N 81.8W MODERATE WEAKENING SLIGHTLY 00UTC 17.09.2018 36.3N 83.4W WEAK WEAKENING SLIGHTLY 12UTC 17.09.2018 38.5N 84.1W WEAK LITTLE CHANGE 00UTC 18.09.2018 39.5N 81.4W WEAK LITTLE CHANGE 12UTC 18.09.2018 42.0N 76.1W WEAK LITTLE CHANGE 00UTC 19.09.2018 42.5N 70.3W MODERATE INTENSIFYING SLIGHTLY 12UTC 19.09.2018 43.2N 62.3W MODERATE INTENSIFYING SLIGHTLY 00UTC 20.09.2018 44.7N 56.9W MODERATE LITTLE CHANGE 12UTC 20.09.2018 46.2N 50.6W MODERATE LITTLE CHANGE 00UTC 21.09.2018 47.4N 47.3W MODERATE INTENSIFYING SLIGHTLY TROPICAL STORM HELENE ANALYSED POSITION : 35.0N 36.1W ATCF IDENTIFIER : AL082018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 35.0N 36.1W MODERATE 12UTC 15.09.2018 38.2N 34.6W STRONG INTENSIFYING RAPIDLY 00UTC 16.09.2018 40.6N 31.2W STRONG INTENSIFYING SLIGHTLY 12UTC 16.09.2018 43.3N 27.2W STRONG LITTLE CHANGE 00UTC 17.09.2018 44.7N 22.3W STRONG LITTLE CHANGE 12UTC 17.09.2018 47.0N 15.0W STRONG WEAKENING SLIGHTLY 00UTC 18.09.2018 51.6N 7.5W MODERATE WEAKENING SLIGHTLY 12UTC 18.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM ISAAC ANALYSED POSITION : 15.4N 68.6W ATCF IDENTIFIER : AL092018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 15.4N 68.6W WEAK 12UTC 15.09.2018 16.1N 70.3W WEAK LITTLE CHANGE 00UTC 16.09.2018 16.3N 71.7W WEAK LITTLE CHANGE 12UTC 16.09.2018 17.1N 73.3W WEAK LITTLE CHANGE 00UTC 17.09.2018 18.3N 75.2W WEAK LITTLE CHANGE 12UTC 17.09.2018 19.2N 77.1W WEAK LITTLE CHANGE 00UTC 18.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM JOYCE ANALYSED POSITION : 31.4N 43.8W ATCF IDENTIFIER : AL102018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 31.4N 43.8W WEAK 12UTC 15.09.2018 32.2N 41.9W WEAK LITTLE CHANGE 00UTC 16.09.2018 33.4N 39.1W WEAK LITTLE CHANGE 12UTC 16.09.2018 34.6N 36.5W WEAK WEAKENING SLIGHTLY 00UTC 17.09.2018 34.7N 33.0W WEAK LITTLE CHANGE 12UTC 17.09.2018 34.6N 29.3W WEAK LITTLE CHANGE 00UTC 18.09.2018 33.5N 26.4W WEAK LITTLE CHANGE 12UTC 18.09.2018 32.3N 25.6W WEAK LITTLE CHANGE 00UTC 19.09.2018 31.3N 26.2W WEAK LITTLE CHANGE 12UTC 19.09.2018 30.0N 27.7W WEAK LITTLE CHANGE 00UTC 20.09.2018 28.4N 29.3W WEAK LITTLE CHANGE 12UTC 20.09.2018 27.2N 31.0W WEAK LITTLE CHANGE 00UTC 21.09.2018 26.7N 32.6W WEAK LITTLE CHANGE TROPICAL DEPRESSION OLIVIA ANALYSED POSITION : 18.9N 168.3W ATCF IDENTIFIER : EP172018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2018 18.9N 168.3W WEAK 12UTC 15.09.2018 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 150400