Storm Activity: Sep 8, 1958 - Sep 22, 1958
Sep 22 · 03:00 GMT -- 982 mb Extratropical
| Sep 22 | 03:00 GMT | 54.02 | -179.88 | -- | 982 mb | Extratropical | -- |
| Sep 22 | 00:00 GMT | 54.2 | 179 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 21:00 GMT | 54.6 | 177.38 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 18:00 GMT | 55 | 175 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 15:00 GMT | 55.09 | 171.34 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 12:00 GMT | 55 | 168 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 09:00 GMT | 54.98 | 166.63 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 06:00 GMT | 55 | 166 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 03:00 GMT | 55.01 | 165.23 | -- | 984 mb | Extratropical | -- |
| Sep 21 | 00:00 GMT | 55 | 164 | -- | 984 mb | Extratropical | -- |
| Sep 20 | 21:00 GMT | 54.97 | 161.73 | -- | 986 mb | Extratropical | -- |
| Sep 20 | 18:00 GMT | 54.8 | 159 | -- | 988 mb | Extratropical | -- |
| Sep 20 | 15:00 GMT | 54.43 | 156.34 | -- | 986 mb | Extratropical | -- |
| Sep 20 | 12:00 GMT | 54 | 154 | -- | 984 mb | Extratropical | -- |
| Sep 20 | 09:00 GMT | 53.65 | 152.46 | -- | 984 mb | Extratropical | -- |
| Sep 20 | 06:00 GMT | 53.5 | 151 | -- | 984 mb | Extratropical | -- |
| Sep 20 | 03:00 GMT | 53.69 | 148.58 | -- | 977 mb | Extratropical | -- |
| Sep 20 | 00:00 GMT | 53.8 | 146.5 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 21:00 GMT | 53.47 | 145.87 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 18:00 GMT | 53 | 146 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 15:00 GMT | 52.65 | 146.21 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 12:00 GMT | 52.3 | 146.6 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 09:00 GMT | 51.96 | 146.87 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 06:00 GMT | 51.5 | 147.3 | -- | 970 mb | Extratropical | -- |
| Sep 19 | 03:00 GMT | 51.01 | 148.25 | -- | 973 mb | Extratropical | -- |
| Sep 19 | 00:00 GMT | 50 | 148.9 | -- | 976 mb | Extratropical | -- |
| Sep 18 | 21:00 GMT | 48.08 | 148.65 | -- | 975 mb | Unknown | -- |
| Sep 18 | 18:00 GMT | 45.8 | 147.8 | -- | 975 mb | Unknown | -- |
| Sep 18 | 15:00 GMT | 43.73 | 146.63 | -- | 975 mb | Unknown | -- |
| Sep 18 | 12:00 GMT | 41.8 | 145.3 | -- | 975 mb | Unknown | -- |
| Sep 18 | 09:00 GMT | 40.11 | 144.2 | -- | 967 mb | Unknown | -- |
| Sep 18 | 06:00 GMT | 38.6 | 143 | -- | 960 mb | Unknown | -- |
| Sep 18 | 03:00 GMT | 37.05 | 141.49 | -- | 961 mb | Unknown | -- |
| Sep 18 | 00:00 GMT | 35.7 | 140 | -- | 962 mb | Unknown | -- |
| Sep 17 | 21:00 GMT | 34.64 | 138.82 | -- | 958 mb | Unknown | -- |
| Sep 17 | 18:00 GMT | 33.8 | 137.8 | -- | 955 mb | Unknown | -- |
| Sep 17 | 15:00 GMT | 33.03 | 136.84 | -- | 955 mb | Unknown | -- |
| Sep 17 | 12:00 GMT | 32.3 | 136 | -- | 955 mb | Unknown | -- |
| Sep 17 | 09:00 GMT | 31.41 | 135.21 | -- | 952 mb | Unknown | -- |
| Sep 17 | 06:00 GMT | 30.6 | 134.6 | -- | 950 mb | Unknown | -- |
| Sep 17 | 03:00 GMT | 30.04 | 134.24 | -- | 950 mb | Unknown | -- |
| Sep 17 | 00:00 GMT | 29.6 | 134 | -- | 950 mb | Unknown | -- |
| Sep 16 | 21:00 GMT | 29.11 | 133.68 | -- | 952 mb | Unknown | -- |
| Sep 16 | 18:00 GMT | 28.7 | 133.4 | -- | 955 mb | Unknown | -- |
| Sep 16 | 15:00 GMT | 28.41 | 133.23 | -- | 955 mb | Unknown | -- |
| Sep 16 | 12:00 GMT | 28.2 | 133.1 | -- | 955 mb | Unknown | -- |
| Sep 16 | 09:00 GMT | 27.98 | 132.98 | -- | 955 mb | Unknown | -- |
| Sep 16 | 06:00 GMT | 27.8 | 132.8 | -- | 955 mb | Unknown | -- |
| Sep 16 | 03:00 GMT | 27.7 | 132.47 | -- | 952 mb | Unknown | -- |
| Sep 16 | 00:00 GMT | 27.6 | 132.1 | -- | 950 mb | Unknown | -- |
| Sep 15 | 21:00 GMT | 27.43 | 131.78 | -- | 947 mb | Unknown | -- |
| Sep 15 | 18:00 GMT | 27.2 | 131.5 | -- | 945 mb | Unknown | -- |
| Sep 15 | 15:00 GMT | 26.9 | 131.28 | -- | 945 mb | Unknown | -- |
| Sep 15 | 12:00 GMT | 26.6 | 131.1 | -- | 945 mb | Unknown | -- |
| Sep 15 | 09:00 GMT | 26.41 | 130.98 | -- | 945 mb | Unknown | -- |
| Sep 15 | 06:00 GMT | 26.2 | 130.8 | -- | 945 mb | Unknown | -- |
| Sep 15 | 03:00 GMT | 25.8 | 130.41 | -- | 942 mb | Unknown | -- |
| Sep 15 | 00:00 GMT | 25.4 | 130 | -- | 940 mb | Unknown | -- |
| Sep 14 | 21:00 GMT | 25.18 | 129.76 | -- | 937 mb | Unknown | -- |
| Sep 14 | 18:00 GMT | 25 | 129.6 | -- | 935 mb | Unknown | -- |
| Sep 14 | 15:00 GMT | 24.72 | 129.48 | -- | 935 mb | Unknown | -- |
| Sep 14 | 12:00 GMT | 24.4 | 129.4 | -- | 935 mb | Unknown | -- |
| Sep 14 | 09:00 GMT | 24.17 | 129.36 | -- | 935 mb | Unknown | -- |
| Sep 14 | 06:00 GMT | 23.8 | 129.3 | -- | 935 mb | Unknown | -- |
| Sep 14 | 03:00 GMT | 22.98 | 129.14 | -- | 935 mb | Unknown | -- |
| Sep 14 | 00:00 GMT | 22.3 | 129 | -- | 935 mb | Unknown | -- |
| Sep 13 | 21:00 GMT | 22.39 | 128.98 | -- | 927 mb | Unknown | -- |
| Sep 13 | 18:00 GMT | 22.6 | 129 | -- | 920 mb | Unknown | -- |
| Sep 13 | 15:00 GMT | 22.3 | 129 | -- | 920 mb | Unknown | -- |
| Sep 13 | 12:00 GMT | 21.9 | 129 | -- | 920 mb | Unknown | -- |
| Sep 13 | 09:00 GMT | 21.66 | 128.98 | -- | 920 mb | Unknown | -- |
| Sep 13 | 06:00 GMT | 21.5 | 129 | -- | 920 mb | Unknown | -- |
| Sep 13 | 03:00 GMT | 21.48 | 129.12 | -- | 920 mb | Unknown | -- |
| Sep 13 | 00:00 GMT | 21.4 | 129.3 | -- | 920 mb | Unknown | -- |
| Sep 12 | 21:00 GMT | 21.01 | 129.48 | -- | 925 mb | Unknown | -- |
| Sep 12 | 18:00 GMT | 20.6 | 129.7 | -- | 930 mb | Unknown | -- |
| Sep 12 | 15:00 GMT | 20.43 | 130.02 | -- | 935 mb | Unknown | -- |
| Sep 12 | 12:00 GMT | 20.3 | 130.3 | -- | 940 mb | Unknown | -- |
| Sep 12 | 09:00 GMT | 20.06 | 130.4 | -- | 945 mb | Unknown | -- |
| Sep 12 | 06:00 GMT | 19.8 | 130.5 | -- | 950 mb | Unknown | -- |
| Sep 12 | 03:00 GMT | 19.55 | 130.76 | -- | 955 mb | Unknown | -- |
| Sep 12 | 00:00 GMT | 19.3 | 131.1 | -- | 960 mb | Unknown | -- |
| Sep 11 | 21:00 GMT | 19.04 | 131.44 | -- | 965 mb | Unknown | -- |
| Sep 11 | 18:00 GMT | 18.8 | 131.8 | -- | 970 mb | Unknown | -- |
| Sep 11 | 15:00 GMT | 18.62 | 132.26 | -- | 975 mb | Unknown | -- |
| Sep 11 | 12:00 GMT | 18.4 | 132.6 | -- | 980 mb | Unknown | -- |
| Sep 11 | 09:00 GMT | 18.01 | 132.63 | -- | 982 mb | Unknown | -- |
| Sep 11 | 06:00 GMT | 17.6 | 132.5 | -- | 985 mb | Unknown | -- |
| Sep 11 | 03:00 GMT | 17.27 | 132.3 | -- | 987 mb | Unknown | -- |
| Sep 11 | 00:00 GMT | 17 | 132.2 | -- | 990 mb | Unknown | -- |
| Sep 10 | 21:00 GMT | 16.75 | 132.37 | -- | 990 mb | Unknown | -- |
| Sep 10 | 18:00 GMT | 16.6 | 132.8 | -- | 990 mb | Unknown | -- |
| Sep 10 | 15:00 GMT | 16.6 | 133.52 | -- | 990 mb | Unknown | -- |
| Sep 10 | 12:00 GMT | 16.6 | 134.2 | -- | 990 mb | Unknown | -- |
| Sep 10 | 09:00 GMT | 16.43 | 134.44 | -- | 990 mb | Unknown | -- |
| Sep 10 | 06:00 GMT | 16.2 | 134.6 | -- | 990 mb | Unknown | -- |
| Sep 10 | 03:00 GMT | 16.01 | 134.98 | -- | 990 mb | Unknown | -- |
| Sep 10 | 00:00 GMT | 15.8 | 135.5 | -- | 990 mb | Unknown | -- |
| Sep 9 | 21:00 GMT | 15.53 | 136.17 | -- | 990 mb | Unknown | -- |
| Sep 9 | 18:00 GMT | 15.2 | 136.8 | -- | 990 mb | Unknown | -- |
| Sep 9 | 15:00 GMT | 14.78 | 137.17 | -- | 992 mb | Unknown | -- |
| Sep 9 | 12:00 GMT | 14.4 | 137.5 | -- | 995 mb | Unknown | -- |
| Sep 9 | 09:00 GMT | 14.2 | 138.03 | -- | 995 mb | Unknown | -- |
| Sep 9 | 06:00 GMT | 14 | 138.6 | -- | 995 mb | Unknown | -- |
| Sep 9 | 03:00 GMT | 13.67 | 139.1 | -- | 997 mb | Unknown | -- |
| Sep 9 | 00:00 GMT | 13.2 | 139.6 | -- | 1,000 mb | Unknown | -- |
| Sep 8 | 21:00 GMT | 12.49 | 140.17 | -- | 1,001 mb | Tropical Depression | -- |
| Sep 8 | 18:00 GMT | 11.8 | 140.7 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 8 | 15:00 GMT | 11.44 | 141.12 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 8 | 12:00 GMT | 11.2 | 141.4 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 8 | 09:00 GMT | 10.9 | 141.52 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 8 | 06:00 GMT | 10.6 | 141.6 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 8 | 03:00 GMT | 10.3 | 141.77 | -- | 1,005 mb | Tropical Depression | -- |
| Sep 8 | 00:00 GMT | 10 | 142 | -- | 1,008 mb | Tropical Depression | -- |
Learn more about Tropical Depression Helen and the 1958 Western Pacific hurricane season in our hurricane archive.
View All Hurricanes and Tropical Cyclones