Storm Activity: Dec 3, 1921 - Dec 9, 1921
Dec 9 · 22:00 GMT -- -- Tropical Storm
| Dec 9 | 22:00 GMT | 24.7 | 142.6 | -- | -- | Tropical Storm | -- |
| Dec 9 | 21:00 GMT | 24.52 | 142.39 | -- | -- | Tropical Storm | -- |
| Dec 9 | 18:00 GMT | 23.96 | 141.77 | -- | -- | Tropical Storm | -- |
| Dec 9 | 15:00 GMT | 23.37 | 141.18 | -- | -- | Tropical Storm | -- |
| Dec 9 | 12:00 GMT | 22.75 | 140.63 | -- | -- | Tropical Storm | -- |
| Dec 9 | 10:00 GMT | 22.3 | 140.3 | -- | -- | Tropical Storm | -- |
| Dec 9 | 09:00 GMT | 22.07 | 140.15 | -- | -- | Tropical Storm | -- |
| Dec 9 | 06:00 GMT | 21.34 | 139.74 | -- | -- | Tropical Storm | -- |
| Dec 9 | 03:00 GMT | 20.62 | 139.42 | -- | -- | Tropical Storm | -- |
| Dec 9 | 00:00 GMT | 19.97 | 139.2 | -- | -- | Tropical Storm | -- |
| Dec 8 | 22:00 GMT | 19.6 | 139.1 | -- | -- | Tropical Storm | -- |
| Dec 8 | 21:00 GMT | 19.46 | 139.06 | -- | -- | Tropical Storm | -- |
| Dec 8 | 18:00 GMT | 19.11 | 139.03 | -- | -- | Tropical Storm | -- |
| Dec 8 | 15:00 GMT | 18.86 | 139.07 | -- | -- | Tropical Storm | -- |
| Dec 8 | 12:00 GMT | 18.65 | 139.14 | -- | -- | Tropical Storm | -- |
| Dec 8 | 10:00 GMT | 18.5 | 139.2 | -- | -- | Tropical Storm | -- |
| Dec 8 | 09:00 GMT | 18.4 | 139.21 | -- | -- | Tropical Storm | -- |
| Dec 8 | 06:00 GMT | 18.11 | 139.25 | -- | -- | Tropical Storm | -- |
| Dec 8 | 03:00 GMT | 17.81 | 139.3 | -- | -- | Tropical Storm | -- |
| Dec 8 | 00:00 GMT | 17.5 | 139.36 | -- | -- | Tropical Storm | -- |
| Dec 7 | 22:00 GMT | 17.3 | 139.4 | -- | -- | Tropical Storm | -- |
| Dec 7 | 21:00 GMT | 17.2 | 139.42 | -- | -- | Tropical Storm | -- |
| Dec 7 | 18:00 GMT | 16.89 | 139.49 | -- | -- | Tropical Storm | -- |
| Dec 7 | 15:00 GMT | 16.58 | 139.56 | -- | -- | Tropical Storm | -- |
| Dec 7 | 12:00 GMT | 16.29 | 139.64 | -- | -- | Tropical Storm | -- |
| Dec 7 | 10:00 GMT | 16.1 | 139.7 | -- | -- | Tropical Storm | -- |
| Dec 7 | 09:00 GMT | 16.01 | 139.73 | -- | -- | Tropical Storm | -- |
| Dec 7 | 06:00 GMT | 15.73 | 139.83 | -- | -- | Tropical Storm | -- |
| Dec 7 | 03:00 GMT | 15.48 | 139.93 | -- | -- | Tropical Storm | -- |
| Dec 7 | 00:00 GMT | 15.24 | 140.03 | -- | -- | Tropical Storm | -- |
| Dec 6 | 22:00 GMT | 15.1 | 140.1 | -- | -- | Tropical Storm | -- |
| Dec 6 | 21:00 GMT | 15.03 | 140.13 | -- | -- | Tropical Storm | -- |
| Dec 6 | 18:00 GMT | 14.85 | 140.23 | -- | -- | Tropical Storm | -- |
| Dec 6 | 15:00 GMT | 14.68 | 140.33 | -- | -- | Tropical Storm | -- |
| Dec 6 | 12:00 GMT | 14.51 | 140.43 | -- | -- | Tropical Storm | -- |
| Dec 6 | 10:00 GMT | 14.4 | 140.5 | -- | -- | Tropical Storm | -- |
| Dec 6 | 09:00 GMT | 14.34 | 140.53 | -- | -- | Tropical Storm | -- |
| Dec 6 | 06:00 GMT | 14.15 | 140.61 | -- | -- | Tropical Storm | -- |
| Dec 6 | 03:00 GMT | 13.96 | 140.7 | -- | -- | Tropical Storm | -- |
| Dec 6 | 00:00 GMT | 13.75 | 140.81 | -- | -- | Tropical Storm | -- |
| Dec 5 | 22:00 GMT | 13.6 | 140.9 | -- | -- | Tropical Storm | -- |
| Dec 5 | 21:00 GMT | 13.52 | 140.95 | -- | -- | Tropical Storm | -- |
| Dec 5 | 18:00 GMT | 13.27 | 141.14 | -- | -- | Tropical Storm | -- |
| Dec 5 | 15:00 GMT | 13.01 | 141.34 | -- | -- | Tropical Storm | -- |
| Dec 5 | 12:00 GMT | 12.75 | 141.56 | -- | -- | Tropical Storm | -- |
| Dec 5 | 10:00 GMT | 12.6 | 141.7 | -- | -- | Tropical Storm | -- |
| Dec 5 | 09:00 GMT | 12.53 | 141.76 | -- | -- | Tropical Storm | -- |
| Dec 5 | 06:00 GMT | 12.35 | 141.96 | -- | -- | Tropical Storm | -- |
| Dec 5 | 03:00 GMT | 12.18 | 142.15 | -- | -- | Tropical Storm | -- |
| Dec 5 | 00:00 GMT | 12.01 | 142.36 | -- | -- | Tropical Storm | -- |
| Dec 4 | 22:00 GMT | 11.9 | 142.5 | -- | -- | Tropical Storm | -- |
| Dec 4 | 21:00 GMT | 11.83 | 142.58 | -- | -- | Unknown | -- |
| Dec 4 | 18:00 GMT | 11.63 | 142.81 | -- | -- | Unknown | -- |
| Dec 4 | 15:00 GMT | 11.42 | 143.06 | -- | -- | Unknown | -- |
| Dec 4 | 12:00 GMT | 11.22 | 143.32 | -- | -- | Unknown | -- |
| Dec 4 | 10:00 GMT | 11.1 | 143.5 | -- | -- | Unknown | -- |
| Dec 4 | 09:00 GMT | 11.04 | 143.59 | -- | -- | Unknown | -- |
| Dec 4 | 06:00 GMT | 10.87 | 143.87 | -- | -- | Unknown | -- |
| Dec 4 | 03:00 GMT | 10.71 | 144.15 | -- | -- | Unknown | -- |
| Dec 4 | 00:00 GMT | 10.58 | 144.43 | -- | -- | Unknown | -- |
| Dec 3 | 22:00 GMT | 10.5 | 144.6 | -- | -- | Unknown | -- |
| Dec 3 | 21:00 GMT | 10.47 | 144.68 | -- | -- | Unknown | -- |
| Dec 3 | 18:00 GMT | 10.38 | 144.92 | -- | -- | Unknown | -- |
| Dec 3 | 15:00 GMT | 10.3 | 145.15 | -- | -- | Unknown | -- |
| Dec 3 | 12:00 GMT | 10.24 | 145.36 | -- | -- | Unknown | -- |
| Dec 3 | 10:00 GMT | 10.2 | 145.5 | -- | -- | Unknown | -- |
Learn more about Unnamed Tropical Storm and the 1921 Western Pacific hurricane season in our hurricane archive.
View All Hurricanes and Tropical Cyclones