Storm Activity: Aug 27, 1958 - Sep 9, 1958
Sep 9 · 12:00 GMT -- 1,008 mb Extratropical
| Sep 9 | 12:00 GMT | 39 | 169 | -- | 1,008 mb | Extratropical | -- |
| Sep 9 | 09:00 GMT | 39.02 | 168.03 | -- | 1,007 mb | Extratropical | -- |
| Sep 9 | 06:00 GMT | 39 | 166.9 | -- | 1,006 mb | Extratropical | -- |
| Sep 9 | 03:00 GMT | 38.91 | 165.48 | -- | 1,007 mb | Extratropical | -- |
| Sep 9 | 00:00 GMT | 38.8 | 163.8 | -- | 1,008 mb | Extratropical | -- |
| Sep 8 | 21:00 GMT | 38.66 | 161.89 | -- | 1,007 mb | Extratropical | -- |
| Sep 8 | 18:00 GMT | 38.6 | 160 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 15:00 GMT | 38.71 | 158.37 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 12:00 GMT | 39 | 157 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 09:00 GMT | 39.6 | 155.93 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 06:00 GMT | 40 | 155 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 03:00 GMT | 39.57 | 154 | -- | 1,006 mb | Extratropical | -- |
| Sep 8 | 00:00 GMT | 39 | 153 | -- | 1,007 mb | Extratropical | -- |
| Sep 7 | 21:00 GMT | 38.92 | 152.04 | -- | 1,006 mb | Extratropical | -- |
| Sep 7 | 18:00 GMT | 39 | 150.9 | -- | 1,006 mb | Extratropical | -- |
| Sep 7 | 15:00 GMT | 38.99 | 149.48 | -- | 1,006 mb | Extratropical | -- |
| Sep 7 | 12:00 GMT | 39 | 147.8 | -- | 1,006 mb | Extratropical | -- |
| Sep 7 | 09:00 GMT | 38.96 | 145.84 | -- | 1,005 mb | Extratropical | -- |
| Sep 7 | 06:00 GMT | 39.1 | 143.9 | -- | 1,005 mb | Extratropical | -- |
| Sep 7 | 03:00 GMT | 39.86 | 142.37 | -- | 1,005 mb | Extratropical | -- |
| Sep 7 | 00:00 GMT | 40.4 | 140.8 | -- | 1,005 mb | Extratropical | -- |
| Sep 6 | 21:00 GMT | 39.94 | 138.97 | -- | 1,003 mb | Extratropical | -- |
| Sep 6 | 18:00 GMT | 39 | 136.9 | -- | 1,002 mb | Extratropical | -- |
| Sep 6 | 15:00 GMT | 38.03 | 134.43 | -- | 1,002 mb | Extratropical | -- |
| Sep 6 | 12:00 GMT | 37 | 132.1 | -- | 1,002 mb | Extratropical | -- |
| Sep 6 | 09:00 GMT | 36.13 | 130.48 | -- | 1,002 mb | Extratropical | -- |
| Sep 6 | 06:00 GMT | 35.3 | 129.1 | -- | 1,002 mb | Extratropical | -- |
| Sep 6 | 03:00 GMT | 34.35 | 127.44 | -- | 1,001 mb | Extratropical | -- |
| Sep 6 | 00:00 GMT | 33.5 | 126 | -- | 1,000 mb | Extratropical | -- |
| Sep 5 | 21:00 GMT | 32.91 | 125.15 | -- | 999 mb | Extratropical | -- |
| Sep 5 | 18:00 GMT | 32.5 | 124.5 | -- | 998 mb | Extratropical | -- |
| Sep 5 | 15:00 GMT | 32.13 | 123.67 | -- | 997 mb | Unknown | -- |
| Sep 5 | 12:00 GMT | 31.8 | 122.8 | -- | 996 mb | Unknown | -- |
| Sep 5 | 09:00 GMT | 31.47 | 121.85 | -- | 996 mb | Unknown | -- |
| Sep 5 | 06:00 GMT | 31.1 | 121 | -- | 996 mb | Unknown | -- |
| Sep 5 | 03:00 GMT | 30.68 | 120.42 | -- | 995 mb | Unknown | -- |
| Sep 5 | 00:00 GMT | 30.2 | 120 | -- | 994 mb | Unknown | -- |
| Sep 4 | 21:00 GMT | 29.67 | 119.56 | -- | 992 mb | Unknown | -- |
| Sep 4 | 18:00 GMT | 29.1 | 119.3 | -- | 990 mb | Unknown | -- |
| Sep 4 | 15:00 GMT | 28.48 | 119.33 | -- | 990 mb | Unknown | -- |
| Sep 4 | 12:00 GMT | 27.9 | 119.5 | -- | 990 mb | Unknown | -- |
| Sep 4 | 09:00 GMT | 27.45 | 119.58 | -- | 980 mb | Unknown | -- |
| Sep 4 | 06:00 GMT | 27.1 | 119.8 | -- | 970 mb | Unknown | -- |
| Sep 4 | 03:00 GMT | 26.84 | 120.3 | -- | 945 mb | Unknown | -- |
| Sep 4 | 00:00 GMT | 26.6 | 120.9 | -- | 920 mb | Unknown | -- |
| Sep 3 | 21:00 GMT | 26.28 | 121.42 | -- | 920 mb | Unknown | -- |
| Sep 3 | 18:00 GMT | 25.9 | 121.9 | -- | 920 mb | Unknown | -- |
| Sep 3 | 15:00 GMT | 25.46 | 122.36 | -- | 920 mb | Unknown | -- |
| Sep 3 | 12:00 GMT | 25 | 122.8 | -- | 920 mb | Unknown | -- |
| Sep 3 | 09:00 GMT | 24.56 | 123.28 | -- | 920 mb | Unknown | -- |
| Sep 3 | 06:00 GMT | 24.1 | 123.7 | -- | 920 mb | Unknown | -- |
| Sep 3 | 03:00 GMT | 23.59 | 123.98 | -- | 920 mb | Unknown | -- |
| Sep 3 | 00:00 GMT | 23.1 | 124.2 | -- | 920 mb | Unknown | -- |
| Sep 2 | 21:00 GMT | 22.69 | 124.42 | -- | 917 mb | Unknown | -- |
| Sep 2 | 18:00 GMT | 22.3 | 124.7 | -- | 915 mb | Unknown | -- |
| Sep 2 | 15:00 GMT | 21.84 | 125.14 | -- | 912 mb | Unknown | -- |
| Sep 2 | 12:00 GMT | 21.4 | 125.6 | -- | 910 mb | Unknown | -- |
| Sep 2 | 09:00 GMT | 21.05 | 125.93 | -- | 910 mb | Unknown | -- |
| Sep 2 | 06:00 GMT | 20.7 | 126.3 | -- | 910 mb | Unknown | -- |
| Sep 2 | 03:00 GMT | 20.28 | 126.84 | -- | 915 mb | Unknown | -- |
| Sep 2 | 00:00 GMT | 19.8 | 127.4 | -- | 920 mb | Unknown | -- |
| Sep 1 | 21:00 GMT | 19.25 | 127.82 | -- | 917 mb | Unknown | -- |
| Sep 1 | 18:00 GMT | 18.7 | 128.2 | -- | 915 mb | Unknown | -- |
| Sep 1 | 15:00 GMT | 18.21 | 128.63 | -- | 912 mb | Unknown | -- |
| Sep 1 | 12:00 GMT | 17.8 | 129.1 | -- | 910 mb | Unknown | -- |
| Sep 1 | 09:00 GMT | 17.48 | 129.62 | -- | 910 mb | Unknown | -- |
| Sep 1 | 06:00 GMT | 17.2 | 130.2 | -- | 910 mb | Unknown | -- |
| Sep 1 | 03:00 GMT | 16.92 | 130.86 | -- | 907 mb | Unknown | -- |
| Sep 1 | 00:00 GMT | 16.6 | 131.5 | -- | 905 mb | Unknown | -- |
| Aug 31 | 21:00 GMT | 16.18 | 131.99 | -- | 932 mb | Unknown | -- |
| Aug 31 | 18:00 GMT | 15.8 | 132.5 | -- | 960 mb | Unknown | -- |
| Aug 31 | 15:00 GMT | 15.63 | 133.24 | -- | 960 mb | Unknown | -- |
| Aug 31 | 12:00 GMT | 15.5 | 134 | -- | 960 mb | Unknown | -- |
| Aug 31 | 09:00 GMT | 15.29 | 134.62 | -- | 960 mb | Unknown | -- |
| Aug 31 | 06:00 GMT | 15 | 135.2 | -- | 960 mb | Unknown | -- |
| Aug 31 | 03:00 GMT | 14.62 | 135.82 | -- | 965 mb | Unknown | -- |
| Aug 31 | 00:00 GMT | 14.2 | 136.4 | -- | 970 mb | Unknown | -- |
| Aug 30 | 21:00 GMT | 13.78 | 136.83 | -- | 972 mb | Unknown | -- |
| Aug 30 | 18:00 GMT | 13.4 | 137.3 | -- | 975 mb | Unknown | -- |
| Aug 30 | 15:00 GMT | 13.08 | 138.04 | -- | 977 mb | Unknown | -- |
| Aug 30 | 12:00 GMT | 12.8 | 138.8 | -- | 980 mb | Unknown | -- |
| Aug 30 | 09:00 GMT | 12.54 | 139.39 | -- | 980 mb | Unknown | -- |
| Aug 30 | 06:00 GMT | 12.3 | 139.9 | -- | 980 mb | Unknown | -- |
| Aug 30 | 03:00 GMT | 12.05 | 140.4 | -- | 982 mb | Unknown | -- |
| Aug 30 | 00:00 GMT | 11.8 | 140.9 | -- | 985 mb | Unknown | -- |
| Aug 29 | 21:00 GMT | 11.53 | 141.45 | -- | 987 mb | Unknown | -- |
| Aug 29 | 18:00 GMT | 11.3 | 142 | -- | 990 mb | Unknown | -- |
| Aug 29 | 15:00 GMT | 11.18 | 142.51 | -- | 992 mb | Unknown | -- |
| Aug 29 | 12:00 GMT | 11.1 | 143 | -- | 994 mb | Unknown | -- |
| Aug 29 | 09:00 GMT | 11.01 | 143.5 | -- | 995 mb | Unknown | -- |
| Aug 29 | 06:00 GMT | 10.9 | 144 | -- | 996 mb | Unknown | -- |
| Aug 29 | 03:00 GMT | 10.69 | 144.53 | -- | 998 mb | Unknown | -- |
| Aug 29 | 00:00 GMT | 10.5 | 145 | -- | 1,000 mb | Unknown | -- |
| Aug 28 | 21:00 GMT | 10.46 | 145.36 | -- | 1,001 mb | Tropical Depression | -- |
| Aug 28 | 18:00 GMT | 10.4 | 145.6 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 15:00 GMT | 10.2 | 145.74 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 12:00 GMT | 9.9 | 145.8 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 09:00 GMT | 9.51 | 145.86 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 06:00 GMT | 9.1 | 145.9 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 03:00 GMT | 8.78 | 145.95 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 28 | 00:00 GMT | 8.5 | 146 | -- | 1,002 mb | Tropical Depression | -- |
| Aug 27 | 21:00 GMT | 8.25 | 146.05 | -- | 1,004 mb | Tropical Depression | -- |
| Aug 27 | 18:00 GMT | 8 | 146.1 | -- | 1,006 mb | Tropical Depression | -- |
Learn more about Tropical Depression Grace and the 1958 Western Pacific hurricane season in our hurricane archive.
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