000 WTNT80 EGRR 270418 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 27.07.2017 TROPICAL DEPRESSION GREG ANALYSED POSITION : 17.9N 142.1W ATCF IDENTIFIER : EP072017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.07.2017 17.9N 142.1W WEAK 12UTC 27.07.2017 17.9N 144.2W WEAK LITTLE CHANGE 00UTC 28.07.2017 BELOW TROPICAL STORM STRENGTH HURRICANE HILARY ANALYSED POSITION : 16.9N 113.9W ATCF IDENTIFIER : EP092017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.07.2017 16.9N 113.9W STRONG 12UTC 27.07.2017 17.6N 115.8W STRONG LITTLE CHANGE 00UTC 28.07.2017 18.4N 117.7W STRONG LITTLE CHANGE 12UTC 28.07.2017 19.4N 119.8W STRONG LITTLE CHANGE 00UTC 29.07.2017 20.6N 122.3W MODERATE LITTLE CHANGE 12UTC 29.07.2017 21.0N 125.4W MODERATE WEAKENING SLIGHTLY 00UTC 30.07.2017 21.1N 128.7W MODERATE WEAKENING SLIGHTLY 12UTC 30.07.2017 20.7N 131.7W MODERATE LITTLE CHANGE 00UTC 31.07.2017 20.3N 134.0W WEAK WEAKENING SLIGHTLY 12UTC 31.07.2017 19.9N 136.4W WEAK LITTLE CHANGE 00UTC 01.08.2017 19.9N 138.2W WEAK LITTLE CHANGE 12UTC 01.08.2017 20.0N 139.6W WEAK LITTLE CHANGE 00UTC 02.08.2017 20.3N 140.6W WEAK LITTLE CHANGE TROPICAL STORM IRWIN ANALYSED POSITION : 15.0N 123.0W ATCF IDENTIFIER : EP102017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.07.2017 15.0N 123.0W MODERATE 12UTC 27.07.2017 14.6N 123.6W MODERATE LITTLE CHANGE 00UTC 28.07.2017 14.2N 123.9W MODERATE LITTLE CHANGE 12UTC 28.07.2017 13.9N 123.6W MODERATE LITTLE CHANGE 00UTC 29.07.2017 14.4N 122.8W MODERATE WEAKENING SLIGHTLY 12UTC 29.07.2017 16.2N 122.3W MODERATE LITTLE CHANGE 00UTC 30.07.2017 19.1N 123.7W MODERATE LITTLE CHANGE 12UTC 30.07.2017 21.7N 125.8W MODERATE LITTLE CHANGE 00UTC 31.07.2017 23.9N 129.2W WEAK WEAKENING SLIGHTLY 12UTC 31.07.2017 25.0N 132.4W WEAK WEAKENING SLIGHTLY 00UTC 01.08.2017 26.2N 135.5W WEAK LITTLE CHANGE 12UTC 01.08.2017 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 54 HOURS FORECAST POSITION AT T+ 54 : 8.9N 38.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 29.07.2017 8.9N 38.6W WEAK WEAKENING SLIGHTLY 00UTC 30.07.2017 9.7N 38.3W WEAK LITTLE CHANGE 12UTC 30.07.2017 10.7N 38.4W WEAK LITTLE CHANGE 00UTC 31.07.2017 11.3N 38.9W WEAK LITTLE CHANGE 12UTC 31.07.2017 11.8N 39.2W WEAK LITTLE CHANGE 00UTC 01.08.2017 12.9N 39.8W WEAK LITTLE CHANGE 12UTC 01.08.2017 14.8N 41.9W WEAK LITTLE CHANGE 00UTC 02.08.2017 16.4N 45.6W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 84 HOURS FORECAST POSITION AT T+ 84 : 12.0N 31.9W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 30.07.2017 12.0N 31.9W WEAK 00UTC 31.07.2017 12.7N 32.4W WEAK LITTLE CHANGE 12UTC 31.07.2017 14.2N 33.3W WEAK LITTLE CHANGE 00UTC 01.08.2017 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 96 HOURS FORECAST POSITION AT T+ 96 : 38.1N 71.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 31.07.2017 38.1N 71.5W WEAK 12UTC 31.07.2017 39.1N 69.4W WEAK LITTLE CHANGE 00UTC 01.08.2017 40.3N 67.2W WEAK LITTLE CHANGE 12UTC 01.08.2017 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 144 HOURS FORECAST POSITION AT T+144 : 14.0N 98.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 02.08.2017 14.0N 98.0W WEAK 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 270418