000 WTNT80 EGRR 240407 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 24.09.2017 TROPICAL STORM 18E ANALYSED POSITION : 18.6N 105.2W ATCF IDENTIFIER : EP182017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 24.09.2017 18.6N 105.2W WEAK 12UTC 24.09.2017 19.2N 105.5W WEAK LITTLE CHANGE 00UTC 25.09.2017 20.4N 106.1W WEAK LITTLE CHANGE 12UTC 25.09.2017 BELOW TROPICAL STORM STRENGTH TROPICAL STORM LEE ANALYSED POSITION : 32.2N 50.3W ATCF IDENTIFIER : AL142017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 24.09.2017 32.2N 50.3W WEAK 12UTC 24.09.2017 31.8N 50.5W WEAK LITTLE CHANGE 00UTC 25.09.2017 31.6N 50.1W WEAK LITTLE CHANGE 12UTC 25.09.2017 30.9N 49.8W WEAK LITTLE CHANGE 00UTC 26.09.2017 30.3N 49.8W WEAK LITTLE CHANGE 12UTC 26.09.2017 30.1N 51.3W WEAK INTENSIFYING SLIGHTLY 00UTC 27.09.2017 30.1N 53.5W MODERATE LITTLE CHANGE 12UTC 27.09.2017 30.2N 55.5W MODERATE LITTLE CHANGE 00UTC 28.09.2017 30.6N 56.7W MODERATE INTENSIFYING SLIGHTLY 12UTC 28.09.2017 31.9N 57.3W MODERATE LITTLE CHANGE 00UTC 29.09.2017 34.2N 56.5W MODERATE LITTLE CHANGE 12UTC 29.09.2017 37.5N 54.0W MODERATE LITTLE CHANGE 00UTC 30.09.2017 41.9N 48.7W MODERATE LITTLE CHANGE HURRICANE MARIA ANALYSED POSITION : 26.7N 72.4W ATCF IDENTIFIER : AL152017 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 24.09.2017 26.7N 72.4W INTENSE 12UTC 24.09.2017 28.4N 72.9W INTENSE INTENSIFYING SLIGHTLY 00UTC 25.09.2017 29.8N 73.1W INTENSE LITTLE CHANGE 12UTC 25.09.2017 30.8N 73.4W INTENSE LITTLE CHANGE 00UTC 26.09.2017 31.9N 73.4W INTENSE INTENSIFYING SLIGHTLY 12UTC 26.09.2017 33.0N 73.6W INTENSE WEAKENING SLIGHTLY 00UTC 27.09.2017 34.0N 73.4W INTENSE WEAKENING SLIGHTLY 12UTC 27.09.2017 34.9N 73.4W INTENSE WEAKENING SLIGHTLY 00UTC 28.09.2017 35.3N 72.7W INTENSE LITTLE CHANGE 12UTC 28.09.2017 35.3N 71.3W INTENSE LITTLE CHANGE 00UTC 29.09.2017 35.2N 69.1W STRONG WEAKENING SLIGHTLY 12UTC 29.09.2017 35.9N 65.8W STRONG LITTLE CHANGE 00UTC 30.09.2017 38.6N 60.0W STRONG WEAKENING SLIGHTLY NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 36 HOURS FORECAST POSITION AT T+ 36 : 13.9N 125.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 25.09.2017 13.9N 125.3W WEAK 00UTC 26.09.2017 13.7N 124.8W WEAK LITTLE CHANGE 12UTC 26.09.2017 13.7N 123.7W WEAK LITTLE CHANGE 00UTC 27.09.2017 12.9N 122.1W WEAK LITTLE CHANGE 12UTC 27.09.2017 12.6N 121.3W WEAK LITTLE CHANGE 00UTC 28.09.2017 12.7N 119.7W WEAK LITTLE CHANGE 12UTC 28.09.2017 13.9N 117.9W WEAK LITTLE CHANGE 00UTC 29.09.2017 14.2N 116.9W WEAK LITTLE CHANGE 12UTC 29.09.2017 14.1N 115.6W WEAK LITTLE CHANGE 00UTC 30.09.2017 13.3N 115.0W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 90 HOURS FORECAST POSITION AT T+ 90 : 11.0N 133.4W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 28.09.2017 11.3N 132.7W WEAK WEAKENING SLIGHTLY 12UTC 28.09.2017 11.9N 131.0W WEAK LITTLE CHANGE 00UTC 29.09.2017 13.0N 129.7W WEAK LITTLE CHANGE 12UTC 29.09.2017 13.3N 128.8W WEAK LITTLE CHANGE 00UTC 30.09.2017 13.3N 128.3W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 114 HOURS FORECAST POSITION AT T+114 : 9.1N 153.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 29.09.2017 8.9N 153.6W WEAK LITTLE CHANGE 12UTC 29.09.2017 9.9N 153.5W WEAK LITTLE CHANGE 00UTC 30.09.2017 11.4N 153.1W 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 240407