706 WTNT80 EGRR 150359 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 15.10.2021 NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 27.6N 54.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 16.10.2021 28.3N 52.0W WEAK WEAKENING SLIGHTLY 12UTC 16.10.2021 30.4N 44.6W WEAK LITTLE CHANGE 00UTC 17.10.2021 32.4N 39.0W MODERATE INTENSIFYING SLIGHTLY 12UTC 17.10.2021 35.5N 32.2W MODERATE LITTLE CHANGE 00UTC 18.10.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 66 HOURS FORECAST POSITION AT T+ 66 : 11.4N 132.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 18.10.2021 11.5N 133.0W WEAK WEAKENING RAPIDLY 12UTC 18.10.2021 11.4N 133.5W WEAK LITTLE CHANGE 00UTC 19.10.2021 11.3N 133.3W WEAK LITTLE CHANGE 12UTC 19.10.2021 11.1N 132.6W WEAK LITTLE CHANGE 00UTC 20.10.2021 10.4N 131.7W WEAK LITTLE CHANGE 12UTC 20.10.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 102 HOURS FORECAST POSITION AT T+102 : 11.1N 126.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 19.10.2021 11.3N 126.3W WEAK LITTLE CHANGE 00UTC 20.10.2021 12.0N 124.7W WEAK LITTLE CHANGE 12UTC 20.10.2021 14.0N 123.7W WEAK LITTLE CHANGE 00UTC 21.10.2021 15.1N 124.9W 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 150359