639 WTNT80 EGRR 301602 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 30.08.2018 TROPICAL DEPRESSION 90L ANALYSED POSITION : 14.6N 16.4W ATCF IDENTIFIER : AL902018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 30.08.2018 14.6N 16.4W WEAK 00UTC 31.08.2018 BELOW TROPICAL STORM STRENGTH HURRICANE MIRIAM ANALYSED POSITION : 15.3N 141.4W ATCF IDENTIFIER : EP152018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 30.08.2018 15.3N 141.4W STRONG 00UTC 31.08.2018 16.4N 141.8W STRONG LITTLE CHANGE 12UTC 31.08.2018 18.2N 141.2W STRONG INTENSIFYING SLIGHTLY 00UTC 01.09.2018 20.4N 140.6W STRONG WEAKENING SLIGHTLY 12UTC 01.09.2018 22.1N 141.3W MODERATE WEAKENING RAPIDLY 00UTC 02.09.2018 24.0N 142.4W WEAK WEAKENING SLIGHTLY 12UTC 02.09.2018 26.2N 144.4W WEAK LITTLE CHANGE 00UTC 03.09.2018 28.2N 145.6W WEAK LITTLE CHANGE 12UTC 03.09.2018 30.0N 147.9W WEAK LITTLE CHANGE 00UTC 04.09.2018 32.2N 149.4W WEAK LITTLE CHANGE 12UTC 04.09.2018 33.2N 150.8W WEAK LITTLE CHANGE 00UTC 05.09.2018 33.3N 150.4W WEAK LITTLE CHANGE 12UTC 05.09.2018 33.6N 149.3W WEAK LITTLE CHANGE HURRICANE NORMAN ANALYSED POSITION : 17.8N 117.7W ATCF IDENTIFIER : EP162018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 30.08.2018 17.8N 117.7W INTENSE 00UTC 31.08.2018 17.8N 119.4W INTENSE WEAKENING SLIGHTLY 12UTC 31.08.2018 17.6N 120.8W STRONG WEAKENING SLIGHTLY 00UTC 01.09.2018 17.5N 123.0W STRONG LITTLE CHANGE 12UTC 01.09.2018 17.1N 125.9W STRONG LITTLE CHANGE 00UTC 02.09.2018 16.4N 128.7W STRONG LITTLE CHANGE 12UTC 02.09.2018 15.7N 131.3W STRONG LITTLE CHANGE 00UTC 03.09.2018 15.7N 133.6W STRONG LITTLE CHANGE 12UTC 03.09.2018 16.1N 135.7W STRONG LITTLE CHANGE 00UTC 04.09.2018 17.0N 137.9W STRONG LITTLE CHANGE 12UTC 04.09.2018 17.5N 140.2W STRONG LITTLE CHANGE 00UTC 05.09.2018 17.9N 142.5W STRONG WEAKENING SLIGHTLY 12UTC 05.09.2018 18.1N 144.6W STRONG LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 6 HOURS FORECAST POSITION AT T+ 6 : 30.1N 175.8W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 31.08.2018 30.6N 176.8W WEAK WEAKENING RAPIDLY 12UTC 31.08.2018 32.0N 177.9W WEAK LITTLE CHANGE 00UTC 01.09.2018 33.3N 178.1W WEAK LITTLE CHANGE 12UTC 01.09.2018 35.6N 178.4W WEAK LITTLE CHANGE 00UTC 02.09.2018 38.1N 178.8W MODERATE LITTLE CHANGE 12UTC 02.09.2018 39.7N 180.0W WEAK LITTLE CHANGE 00UTC 03.09.2018 40.9N 178.4E WEAK LITTLE CHANGE 12UTC 03.09.2018 42.4N 177.9E WEAK LITTLE CHANGE 00UTC 04.09.2018 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 13.6N 21.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 31.08.2018 14.1N 22.2W WEAK LITTLE CHANGE 00UTC 01.09.2018 14.7N 25.6W WEAK LITTLE CHANGE 12UTC 01.09.2018 15.0N 27.9W WEAK LITTLE CHANGE 00UTC 02.09.2018 16.4N 30.0W WEAK LITTLE CHANGE 12UTC 02.09.2018 17.5N 32.6W WEAK LITTLE CHANGE 00UTC 03.09.2018 18.6N 35.6W WEAK LITTLE CHANGE 12UTC 03.09.2018 19.4N 38.2W WEAK LITTLE CHANGE 00UTC 04.09.2018 20.3N 40.5W MODERATE LITTLE CHANGE 12UTC 04.09.2018 21.4N 42.2W MODERATE INTENSIFYING SLIGHTLY 00UTC 05.09.2018 23.3N 43.4W MODERATE LITTLE CHANGE 12UTC 05.09.2018 25.3N 44.5W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 132 HOURS FORECAST POSITION AT T+132 : 15.8N 121.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 05.09.2018 15.8N 121.2W WEAK 12UTC 05.09.2018 16.2N 121.4W WEAK LITTLE CHANGE 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 301602