403 WTNT80 EGRR 161612 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 16.08.2023 TROPICAL STORM GREG ANALYSED POSITION : 11.7N 150.7W ATCF IDENTIFIER : EP082023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 16.08.2023 11.7N 150.7W WEAK 00UTC 17.08.2023 12.2N 153.0W WEAK LITTLE CHANGE 12UTC 17.08.2023 12.2N 155.4W WEAK LITTLE CHANGE 00UTC 18.08.2023 12.0N 158.0W WEAK LITTLE CHANGE 12UTC 18.08.2023 11.7N 160.8W WEAK LITTLE CHANGE 00UTC 19.08.2023 BELOW TROPICAL STORM STRENGTH TROPICAL STORM 90E ANALYSED POSITION : 12.8N 102.1W ATCF IDENTIFIER : EP902023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 16.08.2023 12.8N 102.1W WEAK 00UTC 17.08.2023 14.0N 104.6W MODERATE LITTLE CHANGE 12UTC 17.08.2023 14.7N 108.0W MODERATE LITTLE CHANGE 00UTC 18.08.2023 15.1N 110.4W MODERATE LITTLE CHANGE 12UTC 18.08.2023 16.0N 112.5W MODERATE LITTLE CHANGE 00UTC 19.08.2023 17.2N 114.3W MODERATE LITTLE CHANGE 12UTC 19.08.2023 19.0N 115.8W MODERATE LITTLE CHANGE 00UTC 20.08.2023 19.8N 117.2W MODERATE LITTLE CHANGE 12UTC 20.08.2023 22.2N 117.8W MODERATE LITTLE CHANGE 00UTC 21.08.2023 24.2N 118.1W MODERATE LITTLE CHANGE 12UTC 21.08.2023 26.8N 119.1W MODERATE LITTLE CHANGE 00UTC 22.08.2023 29.1N 120.0W MODERATE LITTLE CHANGE 12UTC 22.08.2023 31.4N 121.7W WEAK LITTLE CHANGE 00UTC 23.08.2023 33.1N 123.3W WEAK LITTLE CHANGE 12UTC 23.08.2023 35.0N 123.9W WEAK LITTLE CHANGE TROPICAL STORM FERNANDA ANALYSED POSITION : 16.9N 126.4W ATCF IDENTIFIER : EP072023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 16.08.2023 16.9N 126.4W MODERATE 00UTC 17.08.2023 16.6N 129.1W MODERATE WEAKENING SLIGHTLY 12UTC 17.08.2023 16.5N 132.0W MODERATE WEAKENING SLIGHTLY 00UTC 18.08.2023 16.7N 134.8W WEAK LITTLE CHANGE 12UTC 18.08.2023 16.9N 137.8W WEAK LITTLE CHANGE 00UTC 19.08.2023 17.2N 140.8W WEAK LITTLE CHANGE 12UTC 19.08.2023 17.3N 144.1W WEAK LITTLE CHANGE 00UTC 20.08.2023 17.4N 147.6W WEAK LITTLE CHANGE 12UTC 20.08.2023 17.7N 150.9W WEAK LITTLE CHANGE 00UTC 21.08.2023 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 54 HOURS FORECAST POSITION AT T+ 54 : 16.7N 32.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 19.08.2023 16.9N 33.4W WEAK LITTLE CHANGE 12UTC 19.08.2023 17.2N 34.0W WEAK LITTLE CHANGE 00UTC 20.08.2023 18.6N 35.7W WEAK LITTLE CHANGE 12UTC 20.08.2023 19.4N 38.3W WEAK LITTLE CHANGE 00UTC 21.08.2023 20.5N 41.3W WEAK LITTLE CHANGE 12UTC 21.08.2023 21.4N 43.5W WEAK LITTLE CHANGE 00UTC 22.08.2023 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 90 HOURS FORECAST POSITION AT T+ 90 : 16.2N 59.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.08.2023 16.7N 60.2W WEAK LITTLE CHANGE 00UTC 21.08.2023 17.3N 62.1W WEAK LITTLE CHANGE 12UTC 21.08.2023 18.4N 64.4W WEAK LITTLE CHANGE 00UTC 22.08.2023 19.8N 65.4W WEAK LITTLE CHANGE 12UTC 22.08.2023 21.2N 67.5W WEAK LITTLE CHANGE 00UTC 23.08.2023 22.2N 67.5W WEAK LITTLE CHANGE 12UTC 23.08.2023 24.5N 68.2W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 168 HOURS FORECAST POSITION AT T+168 : 12.1N 20.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 23.08.2023 12.1N 20.3W 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 161612