Storm Activity: Sep 2, 1991 - Sep 12, 1991
Sep 12 · 03:00 GMT -- 972 mb Extratropical
| Sep 12 | 03:00 GMT | 46.51 | -179.66 | -- | 972 mb | Extratropical | -- |
| Sep 12 | 00:00 GMT | 46 | 179 | -- | 972 mb | Extratropical | -- |
| Sep 11 | 21:00 GMT | 45.49 | 178.08 | -- | 972 mb | Extratropical | -- |
| Sep 11 | 18:00 GMT | 45 | 177 | -- | 972 mb | Extratropical | -- |
| Sep 11 | 15:00 GMT | 44.5 | 175.15 | -- | 974 mb | Extratropical | -- |
| Sep 11 | 12:00 GMT | 44 | 173 | -- | 976 mb | Extratropical | -- |
| Sep 11 | 09:00 GMT | 43.58 | 170.93 | -- | 976 mb | Extratropical | -- |
| Sep 11 | 06:00 GMT | 43 | 169 | -- | 976 mb | Extratropical | -- |
| Sep 11 | 03:00 GMT | 41.99 | 167.5 | -- | 978 mb | Extratropical | -- |
| Sep 11 | 00:00 GMT | 41 | 166 | -- | 980 mb | Extratropical | -- |
| Sep 10 | 21:00 GMT | 40.38 | 164 | -- | 980 mb | Extratropical | -- |
| Sep 10 | 18:00 GMT | 40 | 162 | -- | 980 mb | Extratropical | -- |
| Sep 10 | 15:00 GMT | 39.78 | 160.53 | -- | 977 mb | Severe Tropical Storm | -- |
| Sep 10 | 12:00 GMT | 39.6 | 159.1 | 70 mph | 975 mb | Severe Tropical Storm | -- |
| Sep 10 | 09:00 GMT | 39.28 | 157.35 | 70 mph | 972 mb | Typhoon | -- |
| Sep 10 | 06:00 GMT | 38.8 | 155.5 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 10 | 03:00 GMT | 38.1 | 153.76 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 10 | 00:00 GMT | 37.3 | 152 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 9 | 21:00 GMT | 36.53 | 150.12 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 9 | 18:00 GMT | 35.8 | 148.3 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 9 | 15:00 GMT | 35.14 | 146.68 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 9 | 12:00 GMT | 34.6 | 145.2 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 9 | 09:00 GMT | 34.2 | 143.8 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 9 | 06:00 GMT | 33.9 | 142.4 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 9 | 03:00 GMT | 33.3 | 141.4 | 85 mph | 955 mb | Typhoon | 1 |
| Sep 9 | 00:00 GMT | 32.8 | 140.6 | 85 mph | 955 mb | Typhoon | 1 |
| Sep 8 | 21:00 GMT | 32.5 | 139.8 | 85 mph | 955 mb | Typhoon | 1 |
| Sep 8 | 18:00 GMT | 32.2 | 139.1 | 85 mph | 955 mb | Typhoon | 1 |
| Sep 8 | 15:00 GMT | 31.6 | 138.7 | 85 mph | 955 mb | Typhoon | 1 |
| Sep 8 | 12:00 GMT | 31.1 | 138.2 | 90 mph | 950 mb | Typhoon | 1 |
| Sep 8 | 09:00 GMT | 30.7 | 137.8 | 100 mph | 945 mb | Typhoon | 2 |
| Sep 8 | 06:00 GMT | 30.3 | 137.5 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 8 | 03:00 GMT | 29.7 | 137.5 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 8 | 00:00 GMT | 29.2 | 137.4 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 21:00 GMT | 28.7 | 137.6 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 18:00 GMT | 28.1 | 137.7 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 15:00 GMT | 27.8 | 137.8 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 12:00 GMT | 27.3 | 138.2 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 09:00 GMT | 26.8 | 138.7 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 06:00 GMT | 26.2 | 139.1 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 03:00 GMT | 25.8 | 139.4 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 7 | 00:00 GMT | 25.5 | 140 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 6 | 21:00 GMT | 24.9 | 140.6 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 6 | 18:00 GMT | 24.4 | 141.1 | 100 mph | 945 mb | Typhoon | 2 |
| Sep 6 | 15:00 GMT | 23.9 | 141.8 | 100 mph | 950 mb | Typhoon | 2 |
| Sep 6 | 12:00 GMT | 23.4 | 142.4 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 6 | 09:00 GMT | 22.89 | 143.17 | 90 mph | 957 mb | Typhoon | 1 |
| Sep 6 | 06:00 GMT | 22.3 | 144 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 6 | 03:00 GMT | 21.52 | 144.78 | 85 mph | 962 mb | Typhoon | 1 |
| Sep 6 | 00:00 GMT | 20.7 | 145.4 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 5 | 21:00 GMT | 20.01 | 145.67 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 5 | 18:00 GMT | 19.3 | 145.9 | 75 mph | 975 mb | Typhoon | 1 |
| Sep 5 | 15:00 GMT | 18.41 | 146.43 | 70 mph | 977 mb | Severe Tropical Storm | -- |
| Sep 5 | 12:00 GMT | 17.5 | 147 | 70 mph | 980 mb | Severe Tropical Storm | -- |
| Sep 5 | 09:00 GMT | 16.71 | 147.45 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Sep 5 | 06:00 GMT | 16 | 147.8 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Sep 5 | 03:00 GMT | 15.38 | 148.05 | 60 mph | 982 mb | Severe Tropical Storm | -- |
| Sep 5 | 00:00 GMT | 14.8 | 148.2 | 60 mph | 985 mb | Severe Tropical Storm | -- |
| Sep 4 | 21:00 GMT | 14.2 | 148.3 | 60 mph | 985 mb | Severe Tropical Storm | -- |
| Sep 4 | 18:00 GMT | 13.9 | 148.5 | 50 mph | 990 mb | Tropical Storm | -- |
| Sep 4 | 15:00 GMT | 13.57 | 148.75 | 50 mph | 990 mb | Tropical Storm | -- |
| Sep 4 | 12:00 GMT | 13.2 | 149.1 | 50 mph | 990 mb | Tropical Storm | -- |
| Sep 4 | 09:00 GMT | 12.8 | 149.58 | 50 mph | 991 mb | Tropical Storm | -- |
| Sep 4 | 06:00 GMT | 12.3 | 150.1 | 45 mph | 992 mb | Tropical Storm | -- |
| Sep 4 | 03:00 GMT | 11.58 | 150.57 | 45 mph | 992 mb | Tropical Storm | -- |
| Sep 4 | 00:00 GMT | 11 | 151 | 45 mph | 992 mb | Tropical Storm | -- |
| Sep 3 | 21:00 GMT | 10.93 | 151.41 | 45 mph | 993 mb | Tropical Storm | -- |
| Sep 3 | 18:00 GMT | 11 | 151.8 | 45 mph | 994 mb | Tropical Storm | -- |
| Sep 3 | 15:00 GMT | 10.82 | 152.19 | 45 mph | 994 mb | Tropical Storm | -- |
| Sep 3 | 12:00 GMT | 10.6 | 152.6 | 45 mph | 994 mb | Tropical Storm | -- |
| Sep 3 | 09:00 GMT | 10.48 | 153.07 | 45 mph | 995 mb | Tropical Storm | -- |
| Sep 3 | 06:00 GMT | 10.3 | 153.5 | 40 mph | 996 mb | Tropical Storm | -- |
| Sep 3 | 03:00 GMT | 9.94 | 153.79 | 40 mph | 998 mb | Tropical Storm | -- |
| Sep 3 | 00:00 GMT | 9.5 | 154 | 40 mph | 1,000 mb | Tropical Storm | -- |
| Sep 2 | 21:00 GMT | 9.1 | 154.22 | 40 mph | 1,000 mb | Tropical Storm | -- |
| Sep 2 | 18:00 GMT | 8.7 | 154.4 | 40 mph | 1,000 mb | Tropical Storm | -- |
| Sep 2 | 15:00 GMT | 8.27 | 154.46 | -- | 1,001 mb | Tropical Depression | -- |
| Sep 2 | 12:00 GMT | 7.9 | 154.6 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 2 | 09:00 GMT | 7.66 | 154.98 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 2 | 06:00 GMT | 7.5 | 155.5 | -- | 1,002 mb | Tropical Depression | -- |
Learn more about Typhoon Ivy and the 1991 Central Pacific hurricane season in our hurricane archive.
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