Storm Activity: Aug 29, 1866 - Sep 11, 1866
Sep 11 · 12:00 GMT 70 mph -- Extratropical
| Sep 11 | 12:00 GMT | 52.5 | -24 | 70 mph | -- | Extratropical | -- |
| Sep 11 | 09:00 GMT | 51.95 | -24.3 | 70 mph | -- | Extratropical | -- |
| Sep 11 | 06:00 GMT | 51.4 | -24.6 | 70 mph | -- | Extratropical | -- |
| Sep 11 | 03:00 GMT | 50.85 | -24.91 | 70 mph | -- | Extratropical | -- |
| Sep 11 | 00:00 GMT | 50.3 | -25.2 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 21:00 GMT | 49.76 | -25.45 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 18:00 GMT | 49.2 | -25.7 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 15:00 GMT | 48.58 | -26 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 12:00 GMT | 48 | -26.3 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 09:00 GMT | 47.58 | -26.55 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 06:00 GMT | 47.2 | -26.8 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 03:00 GMT | 46.76 | -27.1 | 70 mph | -- | Extratropical | -- |
| Sep 10 | 00:00 GMT | 46.3 | -27.4 | 70 mph | -- | Extratropical | -- |
| Sep 9 | 21:00 GMT | 45.85 | -27.65 | 70 mph | -- | Extratropical | -- |
| Sep 9 | 18:00 GMT | 45.4 | -27.9 | 70 mph | -- | Extratropical | -- |
| Sep 9 | 15:00 GMT | 44.92 | -28.19 | 70 mph | -- | Extratropical | -- |
| Sep 9 | 12:00 GMT | 44.5 | -28.5 | 70 mph | -- | Extratropical | -- |
| Sep 9 | 09:00 GMT | 44.22 | -28.8 | 70 mph | -- | Hurricane | -- |
| Sep 9 | 06:00 GMT | 44 | -29.1 | 75 mph | -- | Hurricane | 1 |
| Sep 9 | 03:00 GMT | 43.75 | -29.39 | 75 mph | -- | Hurricane | 1 |
| Sep 9 | 00:00 GMT | 43.5 | -29.7 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 21:00 GMT | 43.25 | -30.05 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 18:00 GMT | 43 | -30.4 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 15:00 GMT | 42.72 | -30.55 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 12:00 GMT | 42.5 | -31 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 09:00 GMT | 42.42 | -32.2 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 06:00 GMT | 42.4 | -33.7 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 03:00 GMT | 42.35 | -35.04 | 75 mph | -- | Hurricane | 1 |
| Sep 8 | 00:00 GMT | 42.3 | -36.3 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 21:00 GMT | 42.26 | -37.39 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 18:00 GMT | 42.2 | -38.4 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 15:00 GMT | 42.09 | -39.46 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 12:00 GMT | 42 | -40.5 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 09:00 GMT | 41.98 | -41.51 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 06:00 GMT | 42 | -42.5 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 03:00 GMT | 42 | -43.5 | 75 mph | -- | Hurricane | 1 |
| Sep 7 | 00:00 GMT | 42 | -44.5 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 21:00 GMT | 42 | -45.5 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 18:00 GMT | 42 | -46.5 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 15:00 GMT | 42.04 | -47.49 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 12:00 GMT | 42 | -48.5 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 09:00 GMT | 41.79 | -49.54 | 75 mph | -- | Hurricane | 1 |
| Sep 6 | 06:00 GMT | 41.5 | -50.6 | 80 mph | -- | Hurricane | 1 |
| Sep 6 | 03:00 GMT | 41.25 | -51.65 | 80 mph | -- | Hurricane | 1 |
| Sep 6 | 00:00 GMT | 41 | -52.7 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 21:00 GMT | 40.75 | -53.74 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 18:00 GMT | 40.5 | -54.8 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 15:00 GMT | 40.28 | -55.93 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 12:00 GMT | 40 | -57 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 09:00 GMT | 39.58 | -57.89 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 06:00 GMT | 39.1 | -58.7 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 03:00 GMT | 38.66 | -59.54 | 80 mph | -- | Hurricane | 1 |
| Sep 5 | 00:00 GMT | 38.2 | -60.4 | 80 mph | -- | Hurricane | 1 |
| Sep 4 | 21:00 GMT | 37.7 | -61.31 | 80 mph | -- | Hurricane | 1 |
| Sep 4 | 18:00 GMT | 37.2 | -62.2 | 80 mph | -- | Hurricane | 1 |
| Sep 4 | 15:00 GMT | 36.73 | -63.04 | 75 mph | -- | Hurricane | 1 |
| Sep 4 | 12:00 GMT | 36.3 | -63.8 | 75 mph | -- | Hurricane | 1 |
| Sep 4 | 09:00 GMT | 35.88 | -64.42 | 75 mph | -- | Hurricane | 1 |
| Sep 4 | 06:00 GMT | 35.5 | -65 | 75 mph | -- | Hurricane | 1 |
| Sep 4 | 03:00 GMT | 35.22 | -65.65 | 75 mph | -- | Hurricane | 1 |
| Sep 4 | 00:00 GMT | 34.8 | -66.3 | 75 mph | -- | Hurricane | 1 |
| Sep 3 | 21:00 GMT | 34.03 | -66.9 | 75 mph | -- | Hurricane | 1 |
| Sep 3 | 18:00 GMT | 33.1 | -67.5 | 75 mph | -- | Hurricane | 1 |
| Sep 3 | 15:00 GMT | 32.16 | -68.23 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 12:00 GMT | 31.3 | -68.8 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 09:00 GMT | 30.7 | -68.97 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 06:00 GMT | 30.2 | -68.9 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 03:00 GMT | 29.65 | -68.76 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 00:00 GMT | 29.1 | -68.6 | 70 mph | -- | Tropical Storm | -- |
| Sep 2 | 21:00 GMT | 28.56 | -68.54 | 65 mph | -- | Tropical Storm | -- |
| Sep 2 | 18:00 GMT | 28 | -68.5 | 65 mph | -- | Tropical Storm | -- |
| Sep 2 | 15:00 GMT | 27.39 | -68.45 | 65 mph | -- | Tropical Storm | -- |
| Sep 2 | 12:00 GMT | 26.8 | -68.3 | 65 mph | -- | Tropical Storm | -- |
| Sep 2 | 09:00 GMT | 26.29 | -67.99 | 60 mph | -- | Tropical Storm | -- |
| Sep 2 | 06:00 GMT | 25.8 | -67.6 | 60 mph | -- | Tropical Storm | -- |
| Sep 2 | 03:00 GMT | 25.3 | -67.25 | 60 mph | -- | Tropical Storm | -- |
| Sep 2 | 00:00 GMT | 24.8 | -66.9 | 60 mph | -- | Tropical Storm | -- |
| Sep 1 | 21:00 GMT | 24.31 | -66.55 | 55 mph | -- | Tropical Storm | -- |
| Sep 1 | 18:00 GMT | 23.8 | -66.2 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 15:00 GMT | 23.22 | -65.87 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 12:00 GMT | 22.7 | -65.5 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 09:00 GMT | 22.37 | -65.02 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 06:00 GMT | 22.1 | -64.5 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 03:00 GMT | 21.76 | -64 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 00:00 GMT | 21.4 | -63.5 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 21:00 GMT | 21.05 | -63 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 18:00 GMT | 20.7 | -62.5 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 15:00 GMT | 20.35 | -62 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 12:00 GMT | 20 | -61.5 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 09:00 GMT | 19.65 | -61 | 45 mph | -- | Tropical Storm | -- |
| Aug 31 | 06:00 GMT | 19.3 | -60.5 | 40 mph | -- | Tropical Storm | -- |
| Aug 31 | 03:00 GMT | 18.95 | -60 | 40 mph | -- | Tropical Storm | -- |
| Aug 31 | 00:00 GMT | 18.6 | -59.5 | 40 mph | -- | Tropical Storm | -- |
| Aug 30 | 21:00 GMT | 18.25 | -59 | 40 mph | -- | Tropical Storm | -- |
| Aug 30 | 18:00 GMT | 17.9 | -58.5 | 40 mph | -- | Tropical Storm | -- |
| Aug 30 | 15:00 GMT | 17.55 | -58 | 40 mph | -- | Tropical Storm | -- |
| Aug 30 | 12:00 GMT | 17.2 | -57.5 | 40 mph | -- | Tropical Storm | -- |
| Aug 30 | 09:00 GMT | 16.85 | -57 | 35 mph | -- | Tropical Depression | -- |
| Aug 30 | 06:00 GMT | 16.5 | -56.5 | 35 mph | -- | Tropical Depression | -- |
| Aug 30 | 03:00 GMT | 16.15 | -56 | 35 mph | -- | Tropical Depression | -- |
| Aug 30 | 00:00 GMT | 15.8 | -55.5 | 35 mph | -- | Tropical Depression | -- |
| Aug 29 | 21:00 GMT | 15.45 | -55 | 35 mph | -- | Tropical Depression | -- |
| Aug 29 | 18:00 GMT | 15.1 | -54.5 | 35 mph | -- | Tropical Depression | -- |
| Aug 29 | 15:00 GMT | 14.75 | -54 | 35 mph | -- | Tropical Depression | -- |
| Aug 29 | 12:00 GMT | 14.4 | -53.5 | 35 mph | -- | Tropical Depression | -- |
Learn more about Unnamed Hurricane and the 1866 Atlantic hurricane season in our hurricane archive.
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