041 WTNT80 EGRR 170400 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 17.09.2021 TROPICAL DEPRESSION 95L ANALYSED POSITION : 8.8N 39.0W ATCF IDENTIFIER : AL952021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 17.09.2021 8.8N 39.0W WEAK 12UTC 17.09.2021 BELOW TROPICAL STORM STRENGTH TROPICAL DEPRESSION 96L ANALYSED POSITION : 33.1N 75.0W ATCF IDENTIFIER : AL962021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 17.09.2021 33.1N 75.0W WEAK 12UTC 17.09.2021 35.2N 72.1W WEAK LITTLE CHANGE 00UTC 18.09.2021 36.6N 72.2W WEAK LITTLE CHANGE 12UTC 18.09.2021 37.6N 68.9W WEAK LITTLE CHANGE 00UTC 19.09.2021 38.8N 65.1W WEAK INTENSIFYING SLIGHTLY 12UTC 19.09.2021 40.6N 61.0W MODERATE INTENSIFYING SLIGHTLY 00UTC 20.09.2021 42.6N 56.7W MODERATE INTENSIFYING SLIGHTLY 12UTC 20.09.2021 42.2N 56.2W MODERATE LITTLE CHANGE 00UTC 21.09.2021 42.2N 55.6W MODERATE WEAKENING SLIGHTLY 12UTC 21.09.2021 42.0N 55.1W MODERATE WEAKENING SLIGHTLY 00UTC 22.09.2021 42.8N 54.9W MODERATE LITTLE CHANGE 12UTC 22.09.2021 43.6N 54.6W MODERATE LITTLE CHANGE 00UTC 23.09.2021 44.1N 54.1W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 30 HOURS FORECAST POSITION AT T+ 30 : 11.6N 147.4W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 18.09.2021 11.7N 148.2W WEAK WEAKENING SLIGHTLY 00UTC 19.09.2021 11.9N 149.6W WEAK LITTLE CHANGE 12UTC 19.09.2021 12.0N 151.1W WEAK LITTLE CHANGE 00UTC 20.09.2021 12.8N 151.4W WEAK LITTLE CHANGE 12UTC 20.09.2021 13.6N 152.5W WEAK LITTLE CHANGE 00UTC 21.09.2021 14.4N 153.9W WEAK LITTLE CHANGE 12UTC 21.09.2021 14.8N 156.0W WEAK LITTLE CHANGE 00UTC 22.09.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 108 HOURS FORECAST POSITION AT T+108 : 22.8N 29.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 21.09.2021 22.8N 29.3W WEAK 00UTC 22.09.2021 24.1N 29.4W WEAK LITTLE CHANGE 12UTC 22.09.2021 25.0N 30.3W WEAK LITTLE CHANGE 00UTC 23.09.2021 25.9N 30.9W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 114 HOURS FORECAST POSITION AT T+114 : 20.0N 64.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 22.09.2021 20.7N 64.9W WEAK LITTLE CHANGE 12UTC 22.09.2021 22.3N 65.9W WEAK LITTLE CHANGE 00UTC 23.09.2021 23.9N 66.4W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 138 HOURS FORECAST POSITION AT T+138 : 40.6N 13.8E VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 23.09.2021 42.6N 17.3E 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 170400