000 WTNT80 EGRR 200418 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 20.07.2017 TROPICAL DEPRESSION 08E ANALYSED POSITION : 14.5N 121.9W ATCF IDENTIFIER : EP082017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 20.07.2017 14.5N 121.9W WEAK 12UTC 20.07.2017 13.6N 123.0W WEAK LITTLE CHANGE 00UTC 21.07.2017 12.8N 123.9W WEAK LITTLE CHANGE 12UTC 21.07.2017 12.3N 124.8W WEAK LITTLE CHANGE 00UTC 22.07.2017 BELOW TROPICAL STORM STRENGTH HURRICANE FERNANDA ANALYSED POSITION : 17.7N 136.6W ATCF IDENTIFIER : EP062017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 20.07.2017 17.7N 136.6W MODERATE 12UTC 20.07.2017 18.0N 138.7W WEAK LITTLE CHANGE 00UTC 21.07.2017 18.1N 140.9W WEAK LITTLE CHANGE 12UTC 21.07.2017 18.3N 143.4W WEAK LITTLE CHANGE 00UTC 22.07.2017 18.7N 145.5W WEAK LITTLE CHANGE 12UTC 22.07.2017 19.2N 147.7W WEAK LITTLE CHANGE 00UTC 23.07.2017 19.9N 150.4W WEAK LITTLE CHANGE 12UTC 23.07.2017 BELOW TROPICAL STORM STRENGTH TROPICAL STORM GREG ANALYSED POSITION : 13.8N 112.8W ATCF IDENTIFIER : EP072017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 20.07.2017 13.8N 112.8W WEAK 12UTC 20.07.2017 14.1N 114.6W MODERATE LITTLE CHANGE 00UTC 21.07.2017 14.4N 116.8W MODERATE LITTLE CHANGE 12UTC 21.07.2017 14.3N 119.3W MODERATE LITTLE CHANGE 00UTC 22.07.2017 14.3N 121.2W MODERATE LITTLE CHANGE 12UTC 22.07.2017 13.9N 123.5W MODERATE LITTLE CHANGE 00UTC 23.07.2017 13.9N 125.6W MODERATE LITTLE CHANGE 12UTC 23.07.2017 14.0N 127.8W MODERATE LITTLE CHANGE 00UTC 24.07.2017 14.5N 130.1W MODERATE LITTLE CHANGE 12UTC 24.07.2017 15.0N 132.7W MODERATE LITTLE CHANGE 00UTC 25.07.2017 15.6N 134.8W MODERATE LITTLE CHANGE 12UTC 25.07.2017 16.4N 136.2W MODERATE LITTLE CHANGE 00UTC 26.07.2017 17.7N 137.5W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 12.7N 105.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 21.07.2017 13.1N 107.1W WEAK WEAKENING SLIGHTLY 12UTC 21.07.2017 14.4N 109.9W WEAK LITTLE CHANGE 00UTC 22.07.2017 15.8N 112.3W WEAK LITTLE CHANGE 12UTC 22.07.2017 16.4N 114.2W WEAK LITTLE CHANGE 00UTC 23.07.2017 17.0N 115.8W WEAK LITTLE CHANGE 12UTC 23.07.2017 17.4N 116.7W WEAK LITTLE CHANGE 00UTC 24.07.2017 17.8N 117.6W WEAK LITTLE CHANGE 12UTC 24.07.2017 17.5N 118.5W WEAK LITTLE CHANGE 00UTC 25.07.2017 17.0N 119.1W WEAK LITTLE CHANGE 12UTC 25.07.2017 16.3N 120.3W WEAK LITTLE CHANGE 00UTC 26.07.2017 15.2N 121.6W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 78 HOURS FORECAST POSITION AT T+ 78 : 12.1N 99.9W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 23.07.2017 11.8N 100.8W WEAK WEAKENING SLIGHTLY 00UTC 24.07.2017 12.7N 102.4W WEAK LITTLE CHANGE 12UTC 24.07.2017 13.6N 104.5W WEAK LITTLE CHANGE 00UTC 25.07.2017 14.4N 106.4W MODERATE LITTLE CHANGE 12UTC 25.07.2017 15.0N 108.8W MODERATE INTENSIFYING SLIGHTLY 00UTC 26.07.2017 15.6N 111.1W MODERATE INTENSIFYING SLIGHTLY 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 200418