733 WTNT80 EGRR 210411 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 21.10.2023 HURRICANE TAMMY ANALYSED POSITION : 14.7N 59.6W ATCF IDENTIFIER : AL202023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 21.10.2023 14.7N 59.6W WEAK 12UTC 21.10.2023 16.0N 60.7W MODERATE LITTLE CHANGE 00UTC 22.10.2023 17.2N 62.1W WEAK WEAKENING SLIGHTLY 12UTC 22.10.2023 18.5N 62.8W WEAK LITTLE CHANGE 00UTC 23.10.2023 19.5N 63.8W WEAK LITTLE CHANGE 12UTC 23.10.2023 20.6N 64.0W WEAK LITTLE CHANGE 00UTC 24.10.2023 21.1N 64.2W WEAK LITTLE CHANGE 12UTC 24.10.2023 21.4N 64.4W WEAK LITTLE CHANGE 00UTC 25.10.2023 21.1N 64.5W WEAK LITTLE CHANGE 12UTC 25.10.2023 20.9N 64.9W WEAK LITTLE CHANGE 00UTC 26.10.2023 20.8N 64.9W WEAK LITTLE CHANGE 12UTC 26.10.2023 21.7N 64.7W WEAK LITTLE CHANGE 00UTC 27.10.2023 23.2N 64.2W WEAK LITTLE CHANGE 12UTC 27.10.2023 24.7N 64.4W WEAK LITTLE CHANGE 00UTC 28.10.2023 26.3N 64.7W WEAK LITTLE CHANGE TROPICAL DEPRESSION 91E ANALYSED POSITION : 9.2N 95.9W ATCF IDENTIFIER : EP912023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 21.10.2023 9.2N 95.9W WEAK 12UTC 21.10.2023 9.8N 96.4W WEAK LITTLE CHANGE 00UTC 22.10.2023 9.6N 96.7W WEAK LITTLE CHANGE 12UTC 22.10.2023 10.6N 96.8W WEAK LITTLE CHANGE 00UTC 23.10.2023 10.8N 97.0W WEAK LITTLE CHANGE 12UTC 23.10.2023 11.5N 97.7W WEAK LITTLE CHANGE 00UTC 24.10.2023 11.8N 98.0W WEAK LITTLE CHANGE 12UTC 24.10.2023 12.5N 98.9W WEAK LITTLE CHANGE 00UTC 25.10.2023 13.1N 99.8W WEAK LITTLE CHANGE 12UTC 25.10.2023 13.6N 100.8W WEAK LITTLE CHANGE 00UTC 26.10.2023 14.2N 101.9W WEAK LITTLE CHANGE 12UTC 26.10.2023 13.9N 103.3W WEAK LITTLE CHANGE 00UTC 27.10.2023 13.8N 103.6W WEAK LITTLE CHANGE 12UTC 27.10.2023 13.6N 104.1W WEAK LITTLE CHANGE 00UTC 28.10.2023 13.3N 104.5W WEAK LITTLE CHANGE HURRICANE NORMA ANALYSED POSITION : 20.7N 109.9W ATCF IDENTIFIER : EP172023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 21.10.2023 20.7N 109.9W INTENSE 12UTC 21.10.2023 22.4N 110.2W INTENSE WEAKENING SLIGHTLY 00UTC 22.10.2023 23.6N 109.7W STRONG WEAKENING RAPIDLY 12UTC 22.10.2023 24.3N 109.2W STRONG LITTLE CHANGE 00UTC 23.10.2023 24.1N 108.8W MODERATE WEAKENING RAPIDLY 12UTC 23.10.2023 23.9N 107.3W MODERATE LITTLE CHANGE 00UTC 24.10.2023 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 96 HOURS FORECAST POSITION AT T+ 96 : 8.3N 122.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 25.10.2023 8.3N 122.0W WEAK 12UTC 25.10.2023 8.3N 122.3W WEAK LITTLE CHANGE 00UTC 26.10.2023 8.5N 123.0W WEAK LITTLE CHANGE 12UTC 26.10.2023 8.9N 123.7W WEAK LITTLE CHANGE 00UTC 27.10.2023 9.4N 124.5W WEAK LITTLE CHANGE 12UTC 27.10.2023 9.7N 125.2W WEAK LITTLE CHANGE 00UTC 28.10.2023 9.8N 125.9W 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 210411