Storm Activity: Aug 21, 1977 - Aug 27, 1977
Aug 27 · 00:00 GMT -- 1,004 mb Extratropical
| Aug 27 | 00:00 GMT | 32 | 159.1 | -- | 1,004 mb | Extratropical | -- |
| Aug 26 | 21:00 GMT | 32 | 158.54 | -- | 1,001 mb | Extratropical | -- |
| Aug 26 | 18:00 GMT | 32 | 158 | -- | 998 mb | Extratropical | -- |
| Aug 26 | 15:00 GMT | 32 | 157.49 | -- | 997 mb | Extratropical | -- |
| Aug 26 | 12:00 GMT | 32 | 157 | -- | 996 mb | Extratropical | -- |
| Aug 26 | 09:00 GMT | 31.96 | 156.46 | -- | 996 mb | Extratropical | -- |
| Aug 26 | 06:00 GMT | 32 | 156 | -- | 996 mb | Extratropical | -- |
| Aug 26 | 03:00 GMT | 32.21 | 155.75 | -- | 996 mb | Extratropical | -- |
| Aug 26 | 00:00 GMT | 32.5 | 155.5 | -- | 996 mb | Extratropical | -- |
| Aug 25 | 21:00 GMT | 32.79 | 155.08 | -- | 995 mb | Extratropical | -- |
| Aug 25 | 18:00 GMT | 33 | 154.5 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 15:00 GMT | 33.04 | 153.79 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 12:00 GMT | 33 | 153 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 09:00 GMT | 33 | 152.25 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 06:00 GMT | 33 | 151.5 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 03:00 GMT | 33 | 150.75 | -- | 994 mb | Extratropical | -- |
| Aug 25 | 00:00 GMT | 33 | 150 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 21:00 GMT | 33 | 149.25 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 18:00 GMT | 33 | 148.5 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 15:00 GMT | 33.03 | 147.71 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 12:00 GMT | 33 | 147 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 09:00 GMT | 32.84 | 146.51 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 06:00 GMT | 32.6 | 146.1 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 03:00 GMT | 32.27 | 145.58 | -- | 994 mb | Extratropical | -- |
| Aug 24 | 00:00 GMT | 32 | 145.1 | -- | 994 mb | Extratropical | -- |
| Aug 23 | 21:00 GMT | 31.95 | 144.76 | -- | 992 mb | Extratropical | -- |
| Aug 23 | 18:00 GMT | 32 | 144.5 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 15:00 GMT | 32 | 144.28 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 12:00 GMT | 32 | 144 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 09:00 GMT | 31.99 | 143.54 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 06:00 GMT | 32 | 143 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 03:00 GMT | 32.05 | 142.55 | -- | 990 mb | Extratropical | -- |
| Aug 23 | 00:00 GMT | 32.1 | 142 | -- | 990 mb | Extratropical | -- |
| Aug 22 | 21:00 GMT | 32.12 | 141.22 | -- | 990 mb | Extratropical | -- |
| Aug 22 | 18:00 GMT | 32.1 | 140.4 | -- | 990 mb | Extratropical | -- |
| Aug 22 | 15:00 GMT | 32.09 | 139.74 | -- | 989 mb | Tropical Storm | -- |
| Aug 22 | 12:00 GMT | 32 | 139.1 | 45 mph | 988 mb | Tropical Storm | -- |
| Aug 22 | 09:00 GMT | 31.75 | 138.37 | 45 mph | 989 mb | Tropical Storm | -- |
| Aug 22 | 06:00 GMT | 31.4 | 137.6 | 45 mph | 990 mb | Tropical Storm | -- |
| Aug 22 | 03:00 GMT | 31.04 | 136.82 | 45 mph | 991 mb | Tropical Storm | -- |
| Aug 22 | 00:00 GMT | 30.6 | 136 | 45 mph | 992 mb | Tropical Storm | -- |
| Aug 21 | 21:00 GMT | 30.1 | 135.17 | -- | 993 mb | Tropical Depression | -- |
| Aug 21 | 18:00 GMT | 29.5 | 134.3 | -- | 994 mb | Tropical Depression | -- |
| Aug 21 | 15:00 GMT | 28.74 | 133.38 | -- | 995 mb | Tropical Depression | -- |
| Aug 21 | 12:00 GMT | 28 | 132.5 | -- | 996 mb | Tropical Depression | -- |
| Aug 21 | 09:00 GMT | 27.44 | 131.72 | -- | 997 mb | Tropical Depression | -- |
| Aug 21 | 06:00 GMT | 27 | 131 | -- | 998 mb | Tropical Depression | -- |
Learn more about Unnamed Tropical Storm and the 1977 Western Pacific hurricane season in our hurricane archive.
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