133 WTNT80 EGRR 230401 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 23.09.2021 TROPICAL DEPRESSION PETER ANALYSED POSITION : 21.9N 67.1W ATCF IDENTIFIER : AL162021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 23.09.2021 21.9N 67.1W WEAK 12UTC 23.09.2021 22.8N 66.8W WEAK LITTLE CHANGE 00UTC 24.09.2021 23.9N 66.5W WEAK LITTLE CHANGE 12UTC 24.09.2021 25.0N 66.3W WEAK LITTLE CHANGE 00UTC 25.09.2021 25.3N 65.6W WEAK LITTLE CHANGE 12UTC 25.09.2021 26.0N 64.7W WEAK LITTLE CHANGE 00UTC 26.09.2021 26.5N 64.0W WEAK LITTLE CHANGE 12UTC 26.09.2021 27.2N 62.6W WEAK LITTLE CHANGE 00UTC 27.09.2021 28.0N 61.2W WEAK LITTLE CHANGE 12UTC 27.09.2021 29.0N 59.1W WEAK LITTLE CHANGE 00UTC 28.09.2021 29.9N 57.8W WEAK LITTLE CHANGE 12UTC 28.09.2021 30.6N 55.8W WEAK LITTLE CHANGE 00UTC 29.09.2021 31.1N 54.4W WEAK LITTLE CHANGE TROPICAL DEPRESSION ROSE ANALYSED POSITION : 24.4N 40.6W ATCF IDENTIFIER : AL172021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 23.09.2021 24.4N 40.6W WEAK 12UTC 23.09.2021 BELOW TROPICAL STORM STRENGTH TROPICAL STORM ODETTE ANALYSED POSITION : 44.1N 41.5W ATCF IDENTIFIER : AL152021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 23.09.2021 44.1N 41.5W WEAK 12UTC 23.09.2021 44.0N 42.4W WEAK LITTLE CHANGE 00UTC 24.09.2021 44.4N 41.4W WEAK LITTLE CHANGE 12UTC 24.09.2021 44.0N 40.3W WEAK LITTLE CHANGE 00UTC 25.09.2021 41.7N 38.7W WEAK LITTLE CHANGE 12UTC 25.09.2021 38.7N 37.1W WEAK LITTLE CHANGE 00UTC 26.09.2021 35.8N 37.1W WEAK WEAKENING SLIGHTLY 12UTC 26.09.2021 BELOW TROPICAL STORM STRENGTH TROPICAL DEPRESSION 18L ANALYSED POSITION : 10.3N 33.9W ATCF IDENTIFIER : AL182021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 23.09.2021 10.3N 33.9W WEAK 12UTC 23.09.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 36 HOURS FORECAST POSITION AT T+ 36 : 11.9N 42.7W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 24.09.2021 11.9N 42.7W WEAK 00UTC 25.09.2021 12.7N 44.8W WEAK LITTLE CHANGE 12UTC 25.09.2021 13.1N 46.6W WEAK LITTLE CHANGE 00UTC 26.09.2021 13.8N 47.9W WEAK INTENSIFYING SLIGHTLY 12UTC 26.09.2021 14.3N 49.2W MODERATE LITTLE CHANGE 00UTC 27.09.2021 14.9N 50.6W MODERATE LITTLE CHANGE 12UTC 27.09.2021 15.3N 52.4W MODERATE LITTLE CHANGE 00UTC 28.09.2021 16.2N 53.7W MODERATE INTENSIFYING RAPIDLY 12UTC 28.09.2021 17.2N 55.0W STRONG LITTLE CHANGE 00UTC 29.09.2021 18.3N 56.1W STRONG LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 36 HOURS FORECAST POSITION AT T+ 36 : 12.0N 146.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 24.09.2021 12.0N 146.3W WEAK 00UTC 25.09.2021 13.5N 147.8W WEAK LITTLE CHANGE 12UTC 25.09.2021 15.6N 149.5W WEAK LITTLE CHANGE 00UTC 26.09.2021 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 54 HOURS FORECAST POSITION AT T+ 54 : 29.9N 38.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 25.09.2021 29.8N 36.8W WEAK WEAKENING SLIGHTLY 00UTC 26.09.2021 29.8N 34.4W WEAK LITTLE CHANGE 12UTC 26.09.2021 30.5N 33.5W WEAK LITTLE CHANGE 00UTC 27.09.2021 30.8N 34.5W WEAK LITTLE CHANGE 12UTC 27.09.2021 31.2N 35.7W WEAK LITTLE CHANGE 00UTC 28.09.2021 31.4N 37.1W WEAK LITTLE CHANGE 12UTC 28.09.2021 BELOW TROPICAL STORM STRENGTH 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 230401