984 WTNT80 EGRR 190401 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 19.05.2020 TROPICAL STORM ARTHUR ANALYSED POSITION : 36.4N 73.1W ATCF IDENTIFIER : AL012020 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 19.05.2020 36.4N 73.1W MODERATE 12UTC 19.05.2020 37.0N 69.8W MODERATE LITTLE CHANGE 00UTC 20.05.2020 36.1N 66.8W WEAK WEAKENING SLIGHTLY 12UTC 20.05.2020 34.7N 64.7W WEAK LITTLE CHANGE 00UTC 21.05.2020 32.8N 62.8W WEAK WEAKENING SLIGHTLY 12UTC 21.05.2020 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 66 HOURS FORECAST POSITION AT T+ 66 : 9.2N 129.2W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 22.05.2020 9.4N 129.6W WEAK WEAKENING RAPIDLY 12UTC 22.05.2020 9.8N 130.1W WEAK LITTLE CHANGE 00UTC 23.05.2020 10.1N 130.8W WEAK LITTLE CHANGE 12UTC 23.05.2020 10.1N 131.8W WEAK LITTLE CHANGE 00UTC 24.05.2020 10.3N 132.6W WEAK LITTLE CHANGE 12UTC 24.05.2020 10.0N 133.6W WEAK LITTLE CHANGE 00UTC 25.05.2020 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 144 HOURS FORECAST POSITION AT T+144 : 9.5N 116.5W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 25.05.2020 9.5N 116.5W 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 190401