000 WTNT80 EGRR 270419 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 27.08.2017 TROPICAL STORM HARVEY ANALYSED POSITION : 29.2N 97.5W ATCF IDENTIFIER : AL092017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.08.2017 29.2N 97.5W MODERATE 12UTC 27.08.2017 28.9N 97.5W MODERATE WEAKENING SLIGHTLY 00UTC 28.08.2017 28.6N 96.8W MODERATE LITTLE CHANGE 12UTC 28.08.2017 28.6N 96.1W MODERATE LITTLE CHANGE 00UTC 29.08.2017 28.4N 95.4W MODERATE LITTLE CHANGE 12UTC 29.08.2017 28.4N 95.5W MODERATE LITTLE CHANGE 00UTC 30.08.2017 28.6N 95.0W MODERATE LITTLE CHANGE 12UTC 30.08.2017 30.0N 95.4W MODERATE LITTLE CHANGE 00UTC 31.08.2017 30.5N 95.8W MODERATE LITTLE CHANGE 12UTC 31.08.2017 31.9N 95.2W WEAK WEAKENING SLIGHTLY 00UTC 01.09.2017 33.0N 94.9W WEAK LITTLE CHANGE 12UTC 01.09.2017 34.9N 94.2W MODERATE LITTLE CHANGE 00UTC 02.09.2017 35.2N 93.1W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 48 HOURS FORECAST POSITION AT T+ 48 : 31.5N 80.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 29.08.2017 31.5N 80.1W WEAK 12UTC 29.08.2017 33.5N 76.9W WEAK LITTLE CHANGE 00UTC 30.08.2017 35.1N 73.6W WEAK LITTLE CHANGE 12UTC 30.08.2017 36.7N 69.4W MODERATE INTENSIFYING SLIGHTLY 00UTC 31.08.2017 38.0N 64.9W MODERATE INTENSIFYING SLIGHTLY 12UTC 31.08.2017 39.5N 59.8W STRONG INTENSIFYING RAPIDLY 00UTC 01.09.2017 42.1N 55.4W STRONG INTENSIFYING SLIGHTLY 12UTC 01.09.2017 45.0N 51.4W STRONG LITTLE CHANGE 00UTC 02.09.2017 47.5N 46.4W STRONG WEAKENING RAPIDLY NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 72 HOURS FORECAST POSITION AT T+ 72 : 15.8N 28.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2017 15.8N 28.0W WEAK 12UTC 30.08.2017 15.8N 30.8W WEAK LITTLE CHANGE 00UTC 31.08.2017 16.1N 33.1W WEAK LITTLE CHANGE 12UTC 31.08.2017 16.7N 35.4W WEAK LITTLE CHANGE 00UTC 01.09.2017 17.3N 37.7W WEAK LITTLE CHANGE 12UTC 01.09.2017 18.4N 39.9W WEAK LITTLE CHANGE 00UTC 02.09.2017 19.4N 42.0W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 72 HOURS FORECAST POSITION AT T+ 72 : 18.1N 109.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2017 18.1N 109.1W WEAK 12UTC 30.08.2017 19.5N 109.7W MODERATE LITTLE CHANGE 00UTC 31.08.2017 21.1N 109.7W MODERATE LITTLE CHANGE 12UTC 31.08.2017 22.2N 109.2W MODERATE INTENSIFYING SLIGHTLY 00UTC 01.09.2017 23.2N 109.2W MODERATE INTENSIFYING SLIGHTLY 12UTC 01.09.2017 24.7N 109.9W STRONG INTENSIFYING SLIGHTLY 00UTC 02.09.2017 26.3N 110.2W STRONG INTENSIFYING SLIGHTLY NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 96 HOURS FORECAST POSITION AT T+ 96 : 12.2N 131.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 31.08.2017 12.2N 131.1W WEAK 12UTC 31.08.2017 12.3N 131.2W WEAK LITTLE CHANGE 00UTC 01.09.2017 12.9N 131.3W WEAK LITTLE CHANGE 12UTC 01.09.2017 12.8N 131.4W WEAK LITTLE CHANGE 00UTC 02.09.2017 12.8N 131.3W 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 270419