952 WTNT80 EGRR 150410 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 15.07.2023 TROPICAL STORM DON ANALYSED POSITION : 34.4N 47.6W ATCF IDENTIFIER : AL052023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.07.2023 34.4N 47.6W WEAK 12UTC 15.07.2023 36.2N 48.5W WEAK LITTLE CHANGE 00UTC 16.07.2023 37.8N 48.8W WEAK LITTLE CHANGE 12UTC 16.07.2023 38.9N 49.0W WEAK LITTLE CHANGE 00UTC 17.07.2023 39.6N 47.1W WEAK LITTLE CHANGE 12UTC 17.07.2023 39.6N 44.7W WEAK LITTLE CHANGE 00UTC 18.07.2023 38.1N 41.9W WEAK LITTLE CHANGE 12UTC 18.07.2023 36.2N 41.0W WEAK LITTLE CHANGE 00UTC 19.07.2023 34.0N 40.6W WEAK LITTLE CHANGE 12UTC 19.07.2023 32.5N 41.1W WEAK LITTLE CHANGE 00UTC 20.07.2023 31.4N 41.3W WEAK LITTLE CHANGE 12UTC 20.07.2023 31.4N 41.9W WEAK LITTLE CHANGE 00UTC 21.07.2023 31.7N 41.9W WEAK LITTLE CHANGE 12UTC 21.07.2023 32.9N 42.0W WEAK LITTLE CHANGE 00UTC 22.07.2023 33.7N 42.0W WEAK LITTLE CHANGE HURRICANE CALVIN ANALYSED POSITION : 13.9N 125.6W ATCF IDENTIFIER : EP032023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 15.07.2023 13.9N 125.6W INTENSE 12UTC 15.07.2023 14.6N 128.4W INTENSE WEAKENING RAPIDLY 00UTC 16.07.2023 15.5N 131.7W STRONG WEAKENING SLIGHTLY 12UTC 16.07.2023 15.9N 135.0W MODERATE WEAKENING RAPIDLY 00UTC 17.07.2023 16.6N 138.1W MODERATE WEAKENING SLIGHTLY 12UTC 17.07.2023 17.1N 141.6W MODERATE WEAKENING SLIGHTLY 00UTC 18.07.2023 17.5N 145.5W WEAK WEAKENING SLIGHTLY 12UTC 18.07.2023 17.9N 149.7W WEAK LITTLE CHANGE 00UTC 19.07.2023 18.3N 153.7W WEAK LITTLE CHANGE 12UTC 19.07.2023 19.0N 157.9W WEAK LITTLE CHANGE 00UTC 20.07.2023 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 144 HOURS FORECAST POSITION AT T+144 : 37.5N 68.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 21.07.2023 37.5N 68.5W WEAK 12UTC 21.07.2023 39.4N 65.9W WEAK LITTLE CHANGE 00UTC 22.07.2023 41.2N 63.3W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 168 HOURS FORECAST POSITION AT T+168 : 43.6N 12.9E VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 22.07.2023 43.6N 12.9E 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 150410