037 WTNT80 EGRR 300401 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 30.08.2021 TROPICAL DEPRESSION 10L ANALYSED POSITION : 19.8N 50.6W ATCF IDENTIFIER : AL102021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2021 19.8N 50.6W WEAK 12UTC 30.08.2021 20.9N 51.3W WEAK LITTLE CHANGE 00UTC 31.08.2021 21.9N 50.7W WEAK LITTLE CHANGE 12UTC 31.08.2021 23.0N 50.7W WEAK LITTLE CHANGE 00UTC 01.09.2021 23.9N 50.9W WEAK LITTLE CHANGE 12UTC 01.09.2021 25.4N 51.8W WEAK LITTLE CHANGE 00UTC 02.09.2021 26.9N 53.2W WEAK LITTLE CHANGE 12UTC 02.09.2021 28.7N 55.1W WEAK LITTLE CHANGE 00UTC 03.09.2021 BELOW TROPICAL STORM STRENGTH HURRICANE IDA ANALYSED POSITION : 29.7N 90.4W ATCF IDENTIFIER : AL092021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2021 29.7N 90.4W INTENSE 12UTC 30.08.2021 31.2N 91.1W MODERATE WEAKENING RAPIDLY 00UTC 31.08.2021 32.8N 90.5W MODERATE LITTLE CHANGE 12UTC 31.08.2021 34.2N 88.7W MODERATE LITTLE CHANGE 00UTC 01.09.2021 35.4N 86.1W MODERATE LITTLE CHANGE 12UTC 01.09.2021 37.1N 82.9W MODERATE LITTLE CHANGE 00UTC 02.09.2021 38.2N 79.1W MODERATE LITTLE CHANGE 12UTC 02.09.2021 39.2N 76.4W MODERATE LITTLE CHANGE 00UTC 03.09.2021 38.6N 74.7W MODERATE LITTLE CHANGE 12UTC 03.09.2021 39.3N 74.0W WEAK LITTLE CHANGE 00UTC 04.09.2021 40.1N 74.3W WEAK WEAKENING SLIGHTLY 12UTC 04.09.2021 37.6N 75.7W WEAK LITTLE CHANGE 00UTC 05.09.2021 39.7N 71.9W WEAK LITTLE CHANGE TROPICAL STORM NORA ANALYSED POSITION : 26.5N 108.8W ATCF IDENTIFIER : EP142021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2021 26.5N 108.8W WEAK 12UTC 30.08.2021 BELOW TROPICAL STORM STRENGTH TROPICAL STORM JULIAN ANALYSED POSITION : 36.9N 44.0W ATCF IDENTIFIER : AL112021 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 30.08.2021 36.9N 44.0W WEAK 12UTC 30.08.2021 40.1N 39.6W MODERATE INTENSIFYING SLIGHTLY 00UTC 31.08.2021 43.2N 36.8W MODERATE LITTLE CHANGE 12UTC 31.08.2021 48.0N 35.8W MODERATE LITTLE CHANGE 00UTC 01.09.2021 53.4N 40.3W MODERATE LITTLE CHANGE 12UTC 01.09.2021 POST-TROPICAL NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 18 HOURS FORECAST POSITION AT T+ 18 : 9.4N 14.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 31.08.2021 10.2N 15.9W MODERATE LITTLE CHANGE 12UTC 31.08.2021 11.5N 20.3W MODERATE INTENSIFYING SLIGHTLY 00UTC 01.09.2021 11.7N 24.6W MODERATE LITTLE CHANGE 12UTC 01.09.2021 12.0N 28.8W STRONG INTENSIFYING SLIGHTLY 00UTC 02.09.2021 12.6N 32.6W STRONG LITTLE CHANGE 12UTC 02.09.2021 13.1N 36.3W STRONG LITTLE CHANGE 00UTC 03.09.2021 14.0N 39.7W STRONG LITTLE CHANGE 12UTC 03.09.2021 15.0N 43.0W MODERATE LITTLE CHANGE 00UTC 04.09.2021 16.1N 45.8W MODERATE LITTLE CHANGE 12UTC 04.09.2021 17.5N 48.1W STRONG LITTLE CHANGE 00UTC 05.09.2021 19.5N 50.3W STRONG INTENSIFYING SLIGHTLY NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 132 HOURS FORECAST POSITION AT T+132 : 35.8N 57.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 04.09.2021 35.8N 57.5W WEAK 00UTC 05.09.2021 37.2N 56.5W 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 300401