386 WTNT80 EGRR 200401 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 20.09.2021 TROPICAL STORM PETER ANALYSED POSITION : 18.6N 58.1W ATCF IDENTIFIER : AL162021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 20.09.2021 18.6N 58.1W WEAK 12UTC 20.09.2021 19.6N 60.7W WEAK LITTLE CHANGE 00UTC 21.09.2021 19.8N 62.8W WEAK LITTLE CHANGE 12UTC 21.09.2021 20.5N 64.4W WEAK LITTLE CHANGE 00UTC 22.09.2021 21.5N 67.0W WEAK LITTLE CHANGE 12UTC 22.09.2021 22.1N 68.2W WEAK LITTLE CHANGE 00UTC 23.09.2021 22.8N 68.9W WEAK LITTLE CHANGE 12UTC 23.09.2021 23.3N 69.0W WEAK LITTLE CHANGE 00UTC 24.09.2021 23.7N 68.2W WEAK LITTLE CHANGE 12UTC 24.09.2021 24.1N 67.5W WEAK LITTLE CHANGE 00UTC 25.09.2021 24.4N 66.8W WEAK LITTLE CHANGE 12UTC 25.09.2021 25.0N 65.4W WEAK LITTLE CHANGE 00UTC 26.09.2021 25.0N 64.0W WEAK LITTLE CHANGE TROPICAL STORM ROSE ANALYSED POSITION : 14.8N 30.4W ATCF IDENTIFIER : AL172021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 20.09.2021 14.8N 30.4W WEAK 12UTC 20.09.2021 17.1N 32.3W WEAK LITTLE CHANGE 00UTC 21.09.2021 19.7N 34.4W WEAK LITTLE CHANGE 12UTC 21.09.2021 21.4N 36.1W WEAK LITTLE CHANGE 00UTC 22.09.2021 22.8N 36.8W WEAK LITTLE CHANGE 12UTC 22.09.2021 23.9N 38.0W WEAK LITTLE CHANGE 00UTC 23.09.2021 25.3N 39.2W WEAK LITTLE CHANGE 12UTC 23.09.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 54 HOURS FORECAST POSITION AT T+ 54 : 16.5N 120.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 22.09.2021 16.8N 120.5W WEAK LITTLE CHANGE 00UTC 23.09.2021 18.9N 123.4W WEAK LITTLE CHANGE 12UTC 23.09.2021 20.9N 125.5W WEAK LITTLE CHANGE 00UTC 24.09.2021 22.2N 127.7W WEAK LITTLE CHANGE 12UTC 24.09.2021 23.1N 129.4W WEAK LITTLE CHANGE 00UTC 25.09.2021 23.6N 130.8W WEAK LITTLE CHANGE 12UTC 25.09.2021 24.2N 131.5W WEAK LITTLE CHANGE 00UTC 26.09.2021 24.5N 131.7W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 120 HOURS FORECAST POSITION AT T+120 : 13.1N 45.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 25.09.2021 13.1N 45.2W WEAK 12UTC 25.09.2021 14.0N 47.1W WEAK LITTLE CHANGE 00UTC 26.09.2021 14.9N 48.7W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 126 HOURS FORECAST POSITION AT T+126 : 32.9N 35.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 25.09.2021 33.8N 33.8W WEAK LITTLE CHANGE 00UTC 26.09.2021 35.7N 31.9W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 144 HOURS FORECAST POSITION AT T+144 : 37.0N 42.4W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 26.09.2021 37.0N 42.4W WEAK 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 200401