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AL092020, ISAIAS, 46,
20200727, 0000, , LO, 11.6N, 40.5W, 25, 1014,
20200727, 0600, , LO, 11.8N, 42.6W, 30, 1014,
20200727, 1200, , LO, 11.9N, 44.6W, 30, 1013,
20200727, 1800, , LO, 12.0N, 46.5W, 30, 1013,
20200728, 0000, , LO, 12.2N, 48.7W, 35, 1012,
20200728, 0600, , LO, 12.3N, 51.0W, 35, 1012,
20200728, 1200, , LO, 12.5N, 53.7W, 40, 1011,
20200728, 1800, , LO, 13.1N, 56.2W, 40, 1011,
20200729, 0000, , LO, 13.9N, 58.4W, 40, 1010,
20200729, 0600, , LO, 14.7N, 60.5W, 40, 1009,
20200729, 1200, , LO, 15.3N, 62.7W, 45, 1008,
20200729, 1800, , TS, 15.5N, 64.6W, 45, 1007,
20200730, 0000, , TS, 15.8N, 65.9W, 50, 1005,
20200730, 0600, , TS, 16.6N, 67.2W, 50, 1005,
20200730, 1200, , TS, 17.7N, 68.5W, 55, 1002,
20200730, 1530, L, TS, 18.4N, 69.1W, 60, 1000,
20200730, 1800, , TS, 19.1N, 69.8W, 60, 1000,
20200731, 0000, , HU, 19.9N, 71.2W, 65, 998,
20200731, 0600, , HU, 20.5N, 72.7W, 75, 991,
20200731, 0930, L, HU, 20.9N, 73.5W, 75, 991,
20200731, 1200, , HU, 21.3N, 74.0W, 70, 992,
20200731, 1800, , HU, 22.1N, 75.1W, 70, 992,
20200801, 0000, , HU, 22.9N, 75.3W, 75, 986,
20200801, 0600, , HU, 23.6N, 76.7W, 75, 987,
20200801, 1200, , HU, 24.3N, 77.5W, 65, 990,
20200801, 1400, L, TS, 24.5N, 77.7W, 60, 991,
20200801, 1800, , TS, 24.8N, 78.3W, 55, 993,
20200802, 0000, , TS, 25.3N, 78.9W, 55, 996,
20200802, 0600, , TS, 25.9N, 79.2W, 55, 995,
20200802, 1200, , TS, 26.6N, 79.5W, 60, 994,
20200802, 1800, , HU, 27.4N, 79.6W, 65, 993,
20200803, 0000, , HU, 28.2N, 79.7W, 65, 993,
20200803, 0600, , TS, 29.1N, 79.9W, 60, 996,
20200803, 1200, , TS, 30.2N, 80.0W, 55, 998,
20200803, 1800, , HU, 31.2N, 79.7W, 65, 993,
20200804, 0000, , HU, 32.8N, 79.1W, 75, 988,
20200804, 0310, L, HU, 33.9N, 78.4W, 80, 985,
20200804, 0600, , HU, 35.0N, 78.1W, 65, 989,
20200804, 1200, , TS, 37.7N, 76.9W, 60, 993,
20200804, 1800, , TS, 40.9N, 75.3W, 55, 995,
20200805, 0000, , EX, 44.3N, 73.7W, 45, 998,
20200805, 0600, , EX, 46.5N, 72.0W, 40, 1000,
20200805, 1200, , EX, 48.4N, 71.6W, 35, 1001,
20200805, 1800, , EX, 50.5N, 71.3W, 35, 1001,
20200806, 0000, , EX, 52.8N, 70.7W, 35, 999,
20200806, 0600, , EX, 54.1N, 69.1W, 35, 997,
20200806, 1200, , EX, 54.5N, 68.3W, 35, 995,
This is my thought for the best track of Isaias. I went through all the fixes and data and the changes were generally minor. The main highlights were that I believe there were more fluctuations while off Florida (when it was pulsing up and down) and that its final landfall was at its peak intensity of 80 kt (basis being a blend of the radar observations, SFMR and surface observations, while largely ignoring the flight level winds).