Storm Activity: Sep 1, 1957 - Sep 16, 1957
Sep 16 · 21:00 GMT -- 975 mb Unknown
| Sep 16 | 21:00 GMT | 42.01 | 178.57 | -- | 975 mb | Unknown | -- |
| Sep 16 | 18:00 GMT | 41 | 176 | -- | 970 mb | Unknown | -- |
| Sep 16 | 15:00 GMT | 40.03 | 173.95 | -- | 967 mb | Unknown | -- |
| Sep 16 | 12:00 GMT | 39.1 | 172.2 | -- | 965 mb | Unknown | -- |
| Sep 16 | 09:00 GMT | 38.13 | 170.43 | -- | 965 mb | Unknown | -- |
| Sep 16 | 06:00 GMT | 37.2 | 168.8 | -- | 965 mb | Unknown | -- |
| Sep 16 | 03:00 GMT | 36.31 | 167.41 | -- | 965 mb | Unknown | -- |
| Sep 16 | 00:00 GMT | 35.5 | 166 | -- | 965 mb | Unknown | -- |
| Sep 15 | 21:00 GMT | 34.65 | 164.24 | -- | 965 mb | Unknown | -- |
| Sep 15 | 18:00 GMT | 34 | 162.5 | -- | 965 mb | Unknown | -- |
| Sep 15 | 15:00 GMT | 33.75 | 161.04 | -- | 965 mb | Unknown | -- |
| Sep 15 | 12:00 GMT | 33.6 | 159.8 | -- | 965 mb | Unknown | -- |
| Sep 15 | 09:00 GMT | 33.27 | 158.73 | -- | 965 mb | Unknown | -- |
| Sep 15 | 06:00 GMT | 32.8 | 157.8 | -- | 965 mb | Unknown | -- |
| Sep 15 | 03:00 GMT | 32.13 | 156.87 | -- | 965 mb | Unknown | -- |
| Sep 15 | 00:00 GMT | 31.4 | 156.1 | -- | 965 mb | Unknown | -- |
| Sep 14 | 21:00 GMT | 30.77 | 155.5 | -- | 965 mb | Unknown | -- |
| Sep 14 | 18:00 GMT | 30.2 | 155.1 | -- | 965 mb | Unknown | -- |
| Sep 14 | 15:00 GMT | 29.69 | 154.82 | -- | 962 mb | Unknown | -- |
| Sep 14 | 12:00 GMT | 29.2 | 154.7 | -- | 960 mb | Unknown | -- |
| Sep 14 | 09:00 GMT | 28.62 | 154.67 | -- | 960 mb | Unknown | -- |
| Sep 14 | 06:00 GMT | 28.1 | 154.8 | -- | 960 mb | Unknown | -- |
| Sep 14 | 03:00 GMT | 27.75 | 155.05 | -- | 960 mb | Unknown | -- |
| Sep 14 | 00:00 GMT | 27.5 | 155.5 | -- | 960 mb | Unknown | -- |
| Sep 13 | 21:00 GMT | 27.28 | 156.13 | -- | 962 mb | Unknown | -- |
| Sep 13 | 18:00 GMT | 27.1 | 156.9 | -- | 965 mb | Unknown | -- |
| Sep 13 | 15:00 GMT | 26.92 | 157.74 | -- | 965 mb | Unknown | -- |
| Sep 13 | 12:00 GMT | 26.7 | 158.6 | -- | 965 mb | Unknown | -- |
| Sep 13 | 09:00 GMT | 26.41 | 159.34 | -- | 965 mb | Unknown | -- |
| Sep 13 | 06:00 GMT | 26.1 | 160.1 | -- | 965 mb | Unknown | -- |
| Sep 13 | 03:00 GMT | 25.85 | 160.98 | -- | 965 mb | Unknown | -- |
| Sep 13 | 00:00 GMT | 25.6 | 161.9 | -- | 965 mb | Unknown | -- |
| Sep 12 | 21:00 GMT | 25.3 | 162.83 | -- | 965 mb | Unknown | -- |
| Sep 12 | 18:00 GMT | 25 | 163.7 | -- | 965 mb | Unknown | -- |
| Sep 12 | 15:00 GMT | 24.75 | 164.41 | -- | 965 mb | Unknown | -- |
| Sep 12 | 12:00 GMT | 24.5 | 165.1 | -- | 965 mb | Unknown | -- |
| Sep 12 | 09:00 GMT | 24.22 | 165.9 | -- | 965 mb | Unknown | -- |
| Sep 12 | 06:00 GMT | 23.9 | 166.7 | -- | 965 mb | Unknown | -- |
| Sep 12 | 03:00 GMT | 23.56 | 167.41 | -- | 965 mb | Unknown | -- |
| Sep 12 | 00:00 GMT | 23.2 | 168.1 | -- | 965 mb | Unknown | -- |
| Sep 11 | 21:00 GMT | 22.84 | 168.86 | -- | 965 mb | Unknown | -- |
| Sep 11 | 18:00 GMT | 22.5 | 169.6 | -- | 965 mb | Unknown | -- |
| Sep 11 | 15:00 GMT | 22.18 | 170.27 | -- | 967 mb | Unknown | -- |
| Sep 11 | 12:00 GMT | 21.9 | 170.9 | -- | 970 mb | Unknown | -- |
| Sep 11 | 09:00 GMT | 21.64 | 171.49 | -- | 972 mb | Unknown | -- |
| Sep 11 | 06:00 GMT | 21.4 | 172.1 | -- | 975 mb | Unknown | -- |
| Sep 11 | 03:00 GMT | 21.14 | 172.79 | -- | 975 mb | Unknown | -- |
| Sep 11 | 00:00 GMT | 20.9 | 173.5 | -- | 975 mb | Unknown | -- |
| Sep 10 | 21:00 GMT | 20.69 | 174.16 | -- | 975 mb | Unknown | -- |
| Sep 10 | 18:00 GMT | 20.5 | 174.8 | -- | 975 mb | Unknown | -- |
| Sep 10 | 15:00 GMT | 20.29 | 175.46 | -- | 975 mb | Unknown | -- |
| Sep 10 | 12:00 GMT | 20.1 | 176.1 | -- | 975 mb | Unknown | -- |
| Sep 10 | 09:00 GMT | 19.95 | 176.72 | -- | 975 mb | Unknown | -- |
| Sep 10 | 06:00 GMT | 19.8 | 177.3 | -- | 975 mb | Unknown | -- |
| Sep 10 | 03:00 GMT | 19.55 | 177.8 | -- | 975 mb | Unknown | -- |
| Sep 10 | 00:00 GMT | 19.4 | 178.3 | -- | 975 mb | Unknown | -- |
| Sep 9 | 21:00 GMT | 19.49 | 178.91 | -- | 975 mb | Unknown | -- |
| Sep 9 | 18:00 GMT | 19.7 | 179.5 | -- | 975 mb | Unknown | -- |
| Sep 9 | 09:00 GMT | 20.29 | -179.65 | 85 mph | -- | Hurricane | 1 |
| Sep 9 | 06:00 GMT | 20.5 | -179.2 | 85 mph | -- | Hurricane | 1 |
| Sep 9 | 03:00 GMT | 20.73 | -178.74 | 85 mph | -- | Hurricane | 1 |
| Sep 9 | 00:00 GMT | 21 | -178.3 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 21:00 GMT | 21.28 | -177.89 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 18:00 GMT | 21.6 | -177.5 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 15:00 GMT | 21.94 | -177.08 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 12:00 GMT | 22.3 | -176.7 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 09:00 GMT | 22.65 | -176.42 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 06:00 GMT | 23 | -176.2 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 03:00 GMT | 23.36 | -175.99 | 85 mph | -- | Hurricane | 1 |
| Sep 8 | 00:00 GMT | 23.7 | -175.8 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 21:00 GMT | 24.02 | -175.61 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 18:00 GMT | 24.3 | -175.4 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 15:00 GMT | 24.52 | -175.15 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 12:00 GMT | 24.7 | -174.9 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 09:00 GMT | 24.86 | -174.71 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 06:00 GMT | 25 | -174.5 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 03:00 GMT | 25.17 | -174.22 | 85 mph | -- | Hurricane | 1 |
| Sep 7 | 00:00 GMT | 25.3 | -173.9 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 21:00 GMT | 25.38 | -173.6 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 18:00 GMT | 25.4 | -173.3 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 15:00 GMT | 25.37 | -172.99 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 12:00 GMT | 25.3 | -172.7 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 09:00 GMT | 25.2 | -172.46 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 06:00 GMT | 25.1 | -172.2 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 03:00 GMT | 25.03 | -171.89 | 85 mph | -- | Hurricane | 1 |
| Sep 6 | 00:00 GMT | 25 | -171.5 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 21:00 GMT | 24.99 | -171.02 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 18:00 GMT | 25 | -170.5 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 15:00 GMT | 25.03 | -170.06 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 12:00 GMT | 25 | -169.6 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 09:00 GMT | 24.82 | -169.03 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 06:00 GMT | 24.6 | -168.5 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 03:00 GMT | 24.51 | -168.17 | 85 mph | -- | Hurricane | 1 |
| Sep 5 | 00:00 GMT | 24.4 | -167.8 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 21:00 GMT | 24.15 | -167.18 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 18:00 GMT | 23.8 | -166.5 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 15:00 GMT | 23.43 | -165.93 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 12:00 GMT | 23 | -165.4 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 09:00 GMT | 22.46 | -164.93 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 06:00 GMT | 22 | -164.4 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 03:00 GMT | 21.85 | -163.67 | 85 mph | -- | Hurricane | 1 |
| Sep 4 | 00:00 GMT | 21.7 | -162.9 | 85 mph | -- | Hurricane | 1 |
| Sep 3 | 21:00 GMT | 21.25 | -162.29 | 70 mph | -- | Tropical Storm | -- |
| Sep 3 | 18:00 GMT | 20.7 | -161.7 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 15:00 GMT | 20.2 | -161 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 12:00 GMT | 19.7 | -160.3 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 09:00 GMT | 19.2 | -159.69 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 06:00 GMT | 18.7 | -159.1 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 03:00 GMT | 18.18 | -158.42 | 50 mph | -- | Tropical Storm | -- |
| Sep 3 | 00:00 GMT | 17.7 | -157.8 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 21:00 GMT | 17.33 | -157.39 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 18:00 GMT | 17 | -157 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 15:00 GMT | 16.59 | -156.42 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 12:00 GMT | 16.2 | -155.8 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 09:00 GMT | 15.92 | -155.25 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 06:00 GMT | 15.7 | -154.7 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 03:00 GMT | 15.47 | -154.09 | 50 mph | -- | Tropical Storm | -- |
| Sep 2 | 00:00 GMT | 15.3 | -153.5 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 21:00 GMT | 15.23 | -153.04 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 18:00 GMT | 15.2 | -152.6 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 15:00 GMT | 15.15 | -152.12 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 12:00 GMT | 15.1 | -151.6 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 09:00 GMT | 15.04 | -151.04 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 06:00 GMT | 15 | -150.5 | 50 mph | -- | Tropical Storm | -- |
| Sep 1 | 03:00 GMT | 14.99 | -150.03 | 40 mph | -- | Tropical Depression | -- |
| Sep 1 | 00:00 GMT | 15 | -149.6 | 30 mph | -- | Tropical Depression | -- |
Learn more about Unknown Della and the 1957 Western Pacific hurricane season in our hurricane archive.
View All Hurricanes and Tropical Cyclones