490 WTNT80 EGRR 270404 MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC GLOBAL MODEL DATA TIME 00UTC 27.08.2018 TROPICAL DEPRESSION 90E ANALYSED POSITION : 14.3N 104.4W ATCF IDENTIFIER : EP902018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.08.2018 14.3N 104.4W WEAK 12UTC 27.08.2018 BELOW TROPICAL STORM STRENGTH TROPICAL DEPRESSION LANE ANALYSED POSITION : 18.9N 163.1W ATCF IDENTIFIER : EP142018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.08.2018 18.9N 163.1W WEAK 12UTC 27.08.2018 18.9N 165.0W WEAK LITTLE CHANGE 00UTC 28.08.2018 18.9N 166.0W WEAK LITTLE CHANGE 12UTC 28.08.2018 19.2N 167.1W WEAK LITTLE CHANGE 00UTC 29.08.2018 20.6N 167.6W WEAK LITTLE CHANGE 12UTC 29.08.2018 22.6N 167.8W WEAK LITTLE CHANGE 00UTC 30.08.2018 26.1N 168.5W WEAK LITTLE CHANGE 12UTC 30.08.2018 29.7N 171.6W WEAK LITTLE CHANGE 00UTC 31.08.2018 32.9N 175.4W WEAK INTENSIFYING SLIGHTLY 12UTC 31.08.2018 34.2N 177.7W MODERATE INTENSIFYING SLIGHTLY 00UTC 01.09.2018 36.1N 178.4W MODERATE LITTLE CHANGE 12UTC 01.09.2018 38.8N 177.9W MODERATE LITTLE CHANGE 00UTC 02.09.2018 41.5N 177.3W MODERATE LITTLE CHANGE TROPICAL STORM MIRIAM ANALYSED POSITION : 13.8N 127.5W ATCF IDENTIFIER : EP152018 VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 27.08.2018 13.8N 127.5W MODERATE 12UTC 27.08.2018 14.2N 130.1W MODERATE LITTLE CHANGE 00UTC 28.08.2018 14.2N 132.6W MODERATE LITTLE CHANGE 12UTC 28.08.2018 14.5N 134.9W MODERATE LITTLE CHANGE 00UTC 29.08.2018 15.0N 137.1W MODERATE LITTLE CHANGE 12UTC 29.08.2018 15.5N 139.3W MODERATE LITTLE CHANGE 00UTC 30.08.2018 15.7N 140.8W MODERATE LITTLE CHANGE 12UTC 30.08.2018 16.5N 141.2W MODERATE LITTLE CHANGE 00UTC 31.08.2018 18.8N 140.9W MODERATE LITTLE CHANGE 12UTC 31.08.2018 21.2N 141.3W WEAK LITTLE CHANGE 00UTC 01.09.2018 23.4N 142.5W WEAK LITTLE CHANGE 12UTC 01.09.2018 26.0N 144.6W WEAK LITTLE CHANGE 00UTC 02.09.2018 28.9N 147.4W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 42 HOURS FORECAST POSITION AT T+ 42 : 16.6N 113.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 00UTC 29.08.2018 17.0N 114.2W WEAK WEAKENING SLIGHTLY 12UTC 29.08.2018 17.5N 116.5W MODERATE INTENSIFYING SLIGHTLY 00UTC 30.08.2018 18.1N 118.9W MODERATE LITTLE CHANGE 12UTC 30.08.2018 18.3N 121.0W MODERATE LITTLE CHANGE 00UTC 31.08.2018 18.7N 123.1W MODERATE LITTLE CHANGE 12UTC 31.08.2018 18.9N 125.0W MODERATE LITTLE CHANGE 00UTC 01.09.2018 18.8N 127.3W MODERATE LITTLE CHANGE 12UTC 01.09.2018 18.5N 129.9W MODERATE LITTLE CHANGE 00UTC 02.09.2018 17.8N 133.1W MODERATE LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 126 HOURS FORECAST POSITION AT T+126 : 11.8N 165.0W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 01.09.2018 11.5N 165.0W WEAK INTENSIFYING RAPIDLY 00UTC 02.09.2018 12.2N 164.8W WEAK LITTLE CHANGE NEW TROPICAL STORM FORECAST TO DEVELOP AFTER 132 HOURS FORECAST POSITION AT T+132 : 10.9N 29.3W VERIFYING TIME POSITION STRENGTH TENDENCY -------------- -------- -------- -------- 12UTC 01.09.2018 10.9N 29.3W WEAK 00UTC 02.09.2018 13.0N 29.0W WEAK LITTLE CHANGE 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 270404