000 WTNT80 EGRR 131617 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 13.09.2015 NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 21.8N 96.4W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2015 22.4N 96.8W WEAK INTENSIFYING SLIGHTLY 00UTC 15.09.2015 22.3N 96.7W WEAK LITTLE CHANGE 12UTC 15.09.2015 22.8N 96.3W WEAK LITTLE CHANGE 00UTC 16.09.2015 23.7N 96.4W WEAK LITTLE CHANGE 12UTC 16.09.2015 24.6N 97.1W WEAK LITTLE CHANGE 00UTC 17.09.2015 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 30 HOURS FORECAST POSITION AT T+ 30 : 12.4N 41.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.09.2015 11.8N 41.8W WEAK LITTLE CHANGE 12UTC 15.09.2015 12.7N 42.8W WEAK LITTLE CHANGE 00UTC 16.09.2015 13.8N 43.9W WEAK LITTLE CHANGE 12UTC 16.09.2015 15.0N 44.3W WEAK LITTLE CHANGE 00UTC 17.09.2015 15.7N 44.6W WEAK LITTLE CHANGE 12UTC 17.09.2015 16.2N 45.0W WEAK LITTLE CHANGE 00UTC 18.09.2015 17.2N 45.2W WEAK LITTLE CHANGE 12UTC 18.09.2015 17.7N 45.5W WEAK LITTLE CHANGE 00UTC 19.09.2015 18.5N 44.9W WEAK LITTLE CHANGE 12UTC 19.09.2015 18.5N 45.2W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 48 HOURS FORECAST POSITION AT T+ 48 : 11.6N 27.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 15.09.2015 11.6N 27.0W WEAK 00UTC 16.09.2015 12.1N 29.6W WEAK LITTLE CHANGE 12UTC 16.09.2015 12.6N 31.4W WEAK LITTLE CHANGE 00UTC 17.09.2015 13.8N 33.0W WEAK LITTLE CHANGE 12UTC 17.09.2015 15.3N 34.0W WEAK LITTLE CHANGE 00UTC 18.09.2015 17.2N 34.2W MODERATE LITTLE CHANGE 12UTC 18.09.2015 18.9N 34.5W MODERATE LITTLE CHANGE 00UTC 19.09.2015 20.1N 34.9W MODERATE LITTLE CHANGE 12UTC 19.09.2015 20.6N 35.2W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 72 HOURS FORECAST POSITION AT T+ 72 : 12.3N 169.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 16.09.2015 12.3N 169.5W WEAK 00UTC 17.09.2015 13.4N 171.8W WEAK LITTLE CHANGE 12UTC 17.09.2015 15.5N 172.9W MODERATE LITTLE CHANGE 00UTC 18.09.2015 17.5N 173.3W MODERATE INTENSIFYING SLIGHTLY 12UTC 18.09.2015 19.2N 173.2W STRONG INTENSIFYING SLIGHTLY 00UTC 19.09.2015 20.4N 173.2W STRONG INTENSIFYING SLIGHTLY 12UTC 19.09.2015 21.7N 173.4W STRONG LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 96 HOURS FORECAST POSITION AT T+ 96 : 16.3N 116.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 17.09.2015 16.3N 116.5W WEAK 00UTC 18.09.2015 16.8N 118.8W WEAK LITTLE CHANGE 12UTC 18.09.2015 17.5N 119.8W MODERATE LITTLE CHANGE 00UTC 19.09.2015 17.8N 121.2W MODERATE LITTLE CHANGE 12UTC 19.09.2015 17.7N 122.6W MODERATE 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 131617