Unnamed was a TS Atlantic tropical cyclone that existed from October 16 to October 19, 1851 (4 days). It reached peak winds of 69 mph (60 kt). The storm made one landfall on October 19 at 41.1°N, 71.7°W.
| Time (UTC) | Status | Lat | Lon | Winds (kt) | Pressure (mb) | Record |
|---|---|---|---|---|---|---|
| 1851-10-16 00:00 | TS | 28.70 | -78.00 | 40 | ||
| 1851-10-16 06:00 | TS | 29.10 | -77.80 | 40 | ||
| 1851-10-16 12:00 | TS | 29.50 | -77.50 | 50 | ||
| 1851-10-16 18:00 | TS | 30.10 | -77.10 | 50 | ||
| 1851-10-17 00:00 | TS | 30.70 | -76.60 | 60 | ||
| 1851-10-17 06:00 | TS | 31.20 | -76.30 | 60 | ||
| 1851-10-17 12:00 | TS | 31.60 | -75.90 | 60 | ||
| 1851-10-17 18:00 | TS | 32.00 | -75.50 | 60 | ||
| 1851-10-18 00:00 | TS | 32.70 | -74.90 | 60 | ||
| 1851-10-18 06:00 | TS | 33.30 | -74.30 | 60 | ||
| 1851-10-18 12:00 | TS | 34.00 | -73.80 | 60 | ||
| 1851-10-18 18:00 | TS | 35.30 | -73.00 | 60 | ||
| 1851-10-19 00:00 | TS | 37.00 | -72.60 | 50 | ||
| 1851-10-19 06:00 | TS | 38.50 | -72.10 | 50 | ||
| 1851-10-19 12:00 | TS | 40.20 | -71.80 | 50 | ||
| 1851-10-19 15:00 | TS | 41.10 | -71.70 | 50 | Landfall | |
| 1851-10-19 18:00 | TS | 42.00 | -71.60 | 40 |
Source: NOAA National Hurricane Center HURDAT2 best-track database (nhc.noaa.gov/data). Data is in the public domain. Best-track positions and intensities are post-storm reanalysis estimates and may differ from real-time advisories.