928 WTNT80 EGRR 180410 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 18.07.2023 TROPICAL STORM DON ANALYSED POSITION : 38.1N 40.6W ATCF IDENTIFIER : AL052023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 18.07.2023 38.1N 40.6W WEAK 12UTC 18.07.2023 35.9N 39.7W WEAK LITTLE CHANGE 00UTC 19.07.2023 34.2N 38.7W WEAK LITTLE CHANGE 12UTC 19.07.2023 33.9N 39.1W WEAK LITTLE CHANGE 00UTC 20.07.2023 34.0N 39.6W WEAK LITTLE CHANGE 12UTC 20.07.2023 34.5N 40.5W WEAK LITTLE CHANGE 00UTC 21.07.2023 35.1N 41.5W WEAK LITTLE CHANGE 12UTC 21.07.2023 35.6N 43.2W WEAK LITTLE CHANGE 00UTC 22.07.2023 36.4N 44.6W WEAK LITTLE CHANGE 12UTC 22.07.2023 37.5N 46.1W WEAK LITTLE CHANGE 00UTC 23.07.2023 BELOW TROPICAL STORM STRENGTH TROPICAL STORM CALVIN ANALYSED POSITION : 17.2N 144.4W ATCF IDENTIFIER : EP032023 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 18.07.2023 17.2N 144.4W WEAK 12UTC 18.07.2023 17.2N 148.2W WEAK LITTLE CHANGE 00UTC 19.07.2023 17.5N 152.2W WEAK LITTLE CHANGE 12UTC 19.07.2023 17.7N 156.1W WEAK LITTLE CHANGE 00UTC 20.07.2023 18.4N 160.1W WEAK LITTLE CHANGE 12UTC 20.07.2023 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 60 HOURS FORECAST POSITION AT T+ 60 : 37.2N 73.1W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.07.2023 37.2N 73.1W WEAK 00UTC 21.07.2023 37.7N 68.7W WEAK LITTLE CHANGE 12UTC 21.07.2023 39.0N 66.4W WEAK LITTLE CHANGE 00UTC 22.07.2023 41.1N 65.4W WEAK LITTLE CHANGE 12UTC 22.07.2023 45.5N 63.7W WEAK LITTLE CHANGE 00UTC 23.07.2023 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 180410