000 WTNT80 EGRR 120417 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 12.09.2015 TROPICAL STORM HENRI ANALYSED POSITION : 41.5N 56.7W ATCF IDENTIFIER : AL082015 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 12.09.2015 41.5N 56.7W WEAK 12UTC 12.09.2015 45.7N 52.8W WEAK LITTLE CHANGE 00UTC 13.09.2015 47.7N 48.2W WEAK LITTLE CHANGE 12UTC 13.09.2015 48.8N 40.5W WEAK LITTLE CHANGE 00UTC 14.09.2015 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 26.5N 172.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 13.09.2015 27.8N 170.4W MODERATE INTENSIFYING RAPIDLY 12UTC 13.09.2015 34.3N 168.1W MODERATE INTENSIFYING SLIGHTLY 00UTC 14.09.2015 41.2N 174.4W MODERATE WEAKENING SLIGHTLY 12UTC 14.09.2015 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 54 HOURS FORECAST POSITION AT T+ 54 : 11.5N 41.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 14.09.2015 11.3N 42.0W WEAK WEAKENING SLIGHTLY 00UTC 15.09.2015 12.1N 44.4W WEAK LITTLE CHANGE 12UTC 15.09.2015 12.8N 46.8W WEAK LITTLE CHANGE 00UTC 16.09.2015 13.8N 47.9W WEAK LITTLE CHANGE 12UTC 16.09.2015 14.8N 48.8W MODERATE INTENSIFYING SLIGHTLY 00UTC 17.09.2015 15.6N 49.4W MODERATE INTENSIFYING SLIGHTLY 12UTC 17.09.2015 16.1N 49.9W MODERATE LITTLE CHANGE 00UTC 18.09.2015 17.0N 49.9W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 84 HOURS FORECAST POSITION AT T+ 84 : 10.3N 162.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 15.09.2015 10.3N 162.1W WEAK 00UTC 16.09.2015 10.9N 163.7W WEAK LITTLE CHANGE 12UTC 16.09.2015 11.8N 165.7W WEAK LITTLE CHANGE 00UTC 17.09.2015 13.9N 166.9W MODERATE LITTLE CHANGE 12UTC 17.09.2015 16.1N 166.9W MODERATE INTENSIFYING SLIGHTLY 00UTC 18.09.2015 18.2N 166.9W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 114 HOURS FORECAST POSITION AT T+114 : 19.3N 114.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 17.09.2015 19.9N 114.3W WEAK LITTLE CHANGE 12UTC 17.09.2015 20.9N 115.3W WEAK LITTLE CHANGE 00UTC 18.09.2015 21.4N 115.1W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 132 HOURS FORECAST POSITION AT T+132 : 14.0N 37.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 17.09.2015 14.0N 37.1W WEAK 00UTC 18.09.2015 14.8N 38.6W 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 120417