911 WTNT80 EGRR 201604 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 12UTC 20.09.2018 TROPICAL DEPRESSION 97L ANALYSED POSITION : 9.9N 48.9W ATCF IDENTIFIER : AL972018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.09.2018 9.9N 48.9W WEAK 00UTC 21.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL DEPRESSION 19E ANALYSED POSITION : 28.4N 110.1W ATCF IDENTIFIER : EP192018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.09.2018 28.4N 110.1W WEAK 00UTC 21.09.2018 BELOW TROPICAL STORM STRENGTH TROPICAL STORM DEVELOPED IN THE MODEL ANALYSIS AT POSITION : 34.3N 66.4W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 20.09.2018 34.3N 66.4W WEAK 00UTC 21.09.2018 33.9N 63.9W WEAK LITTLE CHANGE 12UTC 21.09.2018 31.4N 64.4W WEAK LITTLE CHANGE 00UTC 22.09.2018 29.7N 64.2W WEAK LITTLE CHANGE 12UTC 22.09.2018 28.9N 64.9W WEAK LITTLE CHANGE 00UTC 23.09.2018 28.1N 66.5W WEAK LITTLE CHANGE 12UTC 23.09.2018 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 48 HOURS FORECAST POSITION AT T+ 48 : 33.9N 43.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 22.09.2018 33.9N 43.6W WEAK 00UTC 23.09.2018 34.0N 44.8W MODERATE LITTLE CHANGE 12UTC 23.09.2018 33.9N 45.7W MODERATE LITTLE CHANGE 00UTC 24.09.2018 33.2N 46.9W MODERATE LITTLE CHANGE 12UTC 24.09.2018 33.6N 47.3W WEAK LITTLE CHANGE 00UTC 25.09.2018 32.7N 46.4W WEAK LITTLE CHANGE 12UTC 25.09.2018 32.7N 45.0W WEAK LITTLE CHANGE 00UTC 26.09.2018 32.0N 42.9W MODERATE LITTLE CHANGE 12UTC 26.09.2018 32.8N 39.6W MODERATE INTENSIFYING SLIGHTLY NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 78 HOURS FORECAST POSITION AT T+ 78 : 27.2N 168.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 24.09.2018 27.0N 169.4W WEAK WEAKENING SLIGHTLY 12UTC 24.09.2018 25.4N 170.6W WEAK LITTLE CHANGE 00UTC 25.09.2018 24.6N 169.5W WEAK LITTLE CHANGE 12UTC 25.09.2018 BELOW TROPICAL STORM STRENGTH NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 96 HOURS FORECAST POSITION AT T+ 96 : 14.0N 109.7W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 24.09.2018 14.0N 109.7W WEAK 00UTC 25.09.2018 14.7N 112.1W WEAK LITTLE CHANGE 12UTC 25.09.2018 15.5N 114.4W WEAK LITTLE CHANGE 00UTC 26.09.2018 16.4N 116.3W WEAK LITTLE CHANGE 12UTC 26.09.2018 17.0N 117.7W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 102 HOURS FORECAST POSITION AT T+102 : 11.5N 39.6W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 25.09.2018 11.9N 41.3W WEAK WEAKENING SLIGHTLY 12UTC 25.09.2018 12.7N 44.6W WEAK LITTLE CHANGE 00UTC 26.09.2018 13.6N 46.8W WEAK LITTLE CHANGE 12UTC 26.09.2018 14.5N 48.8W MODERATE INTENSIFYING SLIGHTLY 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 201604