Storm Activity: Sep 13, 1991 - Sep 30, 1991
Sep 30 · 21:00 GMT -- 970 mb Extratropical
| Sep 30 | 21:00 GMT | 54.4 | -179.53 | -- | 970 mb | Extratropical | -- |
| Sep 30 | 18:00 GMT | 54 | 180 | -- | 968 mb | Extratropical | -- |
| Sep 30 | 15:00 GMT | 53.92 | 179.58 | -- | 964 mb | Extratropical | -- |
| Sep 30 | 12:00 GMT | 54 | 179 | -- | 960 mb | Extratropical | -- |
| Sep 30 | 09:00 GMT | 54.08 | 178.08 | -- | 960 mb | Extratropical | -- |
| Sep 30 | 06:00 GMT | 54 | 177 | -- | 960 mb | Extratropical | -- |
| Sep 30 | 03:00 GMT | 53.5 | 175.92 | -- | 958 mb | Extratropical | -- |
| Sep 30 | 00:00 GMT | 53 | 175 | -- | 956 mb | Extratropical | -- |
| Sep 29 | 21:00 GMT | 52.92 | 174.5 | -- | 954 mb | Extratropical | -- |
| Sep 29 | 18:00 GMT | 53 | 174 | -- | 952 mb | Extratropical | -- |
| Sep 29 | 15:00 GMT | 53 | 173.15 | -- | 950 mb | Extratropical | -- |
| Sep 29 | 12:00 GMT | 53 | 172 | -- | 948 mb | Extratropical | -- |
| Sep 29 | 09:00 GMT | 53.07 | 170.74 | -- | 950 mb | Extratropical | -- |
| Sep 29 | 06:00 GMT | 53 | 169 | -- | 952 mb | Extratropical | -- |
| Sep 29 | 03:00 GMT | 52.7 | 166.99 | -- | 956 mb | Extratropical | -- |
| Sep 29 | 00:00 GMT | 52 | 164 | -- | 960 mb | Extratropical | -- |
| Sep 28 | 21:00 GMT | 50.55 | 159.26 | -- | 961 mb | Extratropical | -- |
| Sep 28 | 18:00 GMT | 49 | 155 | -- | 962 mb | Extratropical | -- |
| Sep 28 | 15:00 GMT | 48.32 | 153.18 | -- | 964 mb | Extratropical | -- |
| Sep 28 | 12:00 GMT | 48 | 152 | -- | 966 mb | Extratropical | -- |
| Sep 28 | 09:00 GMT | 47.7 | 150.19 | -- | 966 mb | Extratropical | -- |
| Sep 28 | 06:00 GMT | 47 | 148 | -- | 966 mb | Extratropical | -- |
| Sep 28 | 03:00 GMT | 45.5 | 145.5 | 70 mph | 970 mb | Severe Tropical Storm | -- |
| Sep 28 | 00:00 GMT | 43.5 | 141.7 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 27 | 22:00 GMT | 41.2 | 139 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 27 | 21:00 GMT | 40.7 | 138.3 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 27 | 18:00 GMT | 39 | 136.3 | 100 mph | 950 mb | Typhoon | 2 |
| Sep 27 | 15:00 GMT | 37.1 | 133.9 | 100 mph | 950 mb | Typhoon | 2 |
| Sep 27 | 12:00 GMT | 35.5 | 132.3 | 105 mph | 945 mb | Typhoon | 2 |
| Sep 27 | 09:00 GMT | 33.9 | 130.6 | 105 mph | 945 mb | Typhoon | 2 |
| Sep 27 | 07:00 GMT | 32.8 | 129.7 | 110 mph | 940 mb | Typhoon | 2 |
| Sep 27 | 06:00 GMT | 32.5 | 129.3 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 27 | 03:00 GMT | 31.2 | 128.4 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 27 | 00:00 GMT | 29.9 | 127.6 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 21:00 GMT | 29 | 126.9 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 18:00 GMT | 28.1 | 126.4 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 26 | 15:00 GMT | 27.3 | 126.2 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 26 | 12:00 GMT | 26.5 | 126 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 09:00 GMT | 25.9 | 125.8 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 06:00 GMT | 25.4 | 125.7 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 03:00 GMT | 24.9 | 125.7 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 26 | 00:00 GMT | 24.4 | 125.8 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 21:00 GMT | 24 | 125.9 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 18:00 GMT | 23.7 | 126.1 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 15:00 GMT | 23.4 | 126.4 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 12:00 GMT | 23 | 126.8 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 09:00 GMT | 22.6 | 127 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 06:00 GMT | 22.2 | 127.2 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 25 | 03:00 GMT | 21.8 | 127.4 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 25 | 00:00 GMT | 21.4 | 127.6 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 24 | 21:00 GMT | 21.2 | 127.9 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 24 | 18:00 GMT | 20.9 | 128.2 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 24 | 15:00 GMT | 20.6 | 128.5 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 24 | 12:00 GMT | 20.4 | 128.8 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 24 | 09:00 GMT | 20.17 | 129.01 | 110 mph | 927 mb | Typhoon | 3 |
| Sep 24 | 06:00 GMT | 19.9 | 129.2 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 24 | 03:00 GMT | 19.58 | 129.45 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 24 | 00:00 GMT | 19.3 | 129.7 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 21:00 GMT | 19.18 | 129.89 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 18:00 GMT | 19.1 | 130.1 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 15:00 GMT | 18.98 | 130.37 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 12:00 GMT | 18.8 | 130.7 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 09:00 GMT | 18.53 | 131.1 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 06:00 GMT | 18.2 | 131.5 | 115 mph | 925 mb | Typhoon | 3 |
| Sep 23 | 03:00 GMT | 17.86 | 131.82 | 110 mph | 927 mb | Typhoon | 3 |
| Sep 23 | 00:00 GMT | 17.5 | 132.1 | 110 mph | 930 mb | Typhoon | 2 |
| Sep 22 | 21:00 GMT | 17.13 | 132.35 | 110 mph | 932 mb | Typhoon | 2 |
| Sep 22 | 18:00 GMT | 16.8 | 132.6 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 22 | 15:00 GMT | 16.54 | 132.9 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 22 | 12:00 GMT | 16.3 | 133.2 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 22 | 09:00 GMT | 16.04 | 133.44 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 22 | 06:00 GMT | 15.8 | 133.7 | 110 mph | 935 mb | Typhoon | 2 |
| Sep 22 | 03:00 GMT | 15.59 | 134.08 | 105 mph | 937 mb | Typhoon | 2 |
| Sep 22 | 00:00 GMT | 15.4 | 134.5 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 21 | 21:00 GMT | 15.24 | 134.9 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 21 | 18:00 GMT | 15.1 | 135.3 | 105 mph | 940 mb | Typhoon | 2 |
| Sep 21 | 15:00 GMT | 14.96 | 135.68 | 100 mph | 942 mb | Typhoon | 2 |
| Sep 21 | 12:00 GMT | 14.8 | 136.1 | 100 mph | 945 mb | Typhoon | 2 |
| Sep 21 | 09:00 GMT | 14.58 | 136.62 | 95 mph | 947 mb | Typhoon | 1 |
| Sep 21 | 06:00 GMT | 14.4 | 137.2 | 90 mph | 950 mb | Typhoon | 1 |
| Sep 21 | 03:00 GMT | 14.36 | 137.82 | 90 mph | 952 mb | Typhoon | 1 |
| Sep 21 | 00:00 GMT | 14.4 | 138.4 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 21:00 GMT | 14.47 | 138.79 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 18:00 GMT | 14.6 | 139.2 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 15:00 GMT | 14.81 | 139.87 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 12:00 GMT | 15 | 140.6 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 09:00 GMT | 15.06 | 141.19 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 06:00 GMT | 15.1 | 141.8 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 03:00 GMT | 15.19 | 142.55 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 20 | 00:00 GMT | 15.3 | 143.3 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 21:00 GMT | 15.46 | 143.9 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 18:00 GMT | 15.6 | 144.5 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 15:00 GMT | 15.63 | 145.23 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 12:00 GMT | 15.6 | 146 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 09:00 GMT | 15.56 | 146.76 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 06:00 GMT | 15.5 | 147.5 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 03:00 GMT | 15.44 | 148.22 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 19 | 00:00 GMT | 15.4 | 148.9 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 18 | 21:00 GMT | 15.39 | 149.6 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 18 | 18:00 GMT | 15.4 | 150.2 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 18 | 15:00 GMT | 15.43 | 150.65 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 18 | 12:00 GMT | 15.5 | 151 | 90 mph | 955 mb | Typhoon | 1 |
| Sep 18 | 09:00 GMT | 15.59 | 151.35 | 90 mph | 957 mb | Typhoon | 1 |
| Sep 18 | 06:00 GMT | 15.7 | 151.7 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 18 | 03:00 GMT | 15.79 | 152.11 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 18 | 00:00 GMT | 15.9 | 152.5 | 85 mph | 960 mb | Typhoon | 1 |
| Sep 17 | 21:00 GMT | 16.06 | 152.82 | 85 mph | 962 mb | Typhoon | 1 |
| Sep 17 | 18:00 GMT | 16.2 | 153.1 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 15:00 GMT | 16.24 | 153.39 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 12:00 GMT | 16.2 | 153.7 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 09:00 GMT | 16.12 | 154.04 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 06:00 GMT | 16 | 154.4 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 03:00 GMT | 15.91 | 154.74 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 17 | 00:00 GMT | 15.8 | 155.1 | 80 mph | 965 mb | Typhoon | 1 |
| Sep 16 | 21:00 GMT | 15.6 | 155.5 | 75 mph | 967 mb | Typhoon | 1 |
| Sep 16 | 18:00 GMT | 15.4 | 155.9 | 75 mph | 970 mb | Typhoon | 1 |
| Sep 16 | 15:00 GMT | 15.28 | 156.25 | 70 mph | 977 mb | Severe Tropical Storm | -- |
| Sep 16 | 12:00 GMT | 15.2 | 156.6 | 65 mph | 985 mb | Severe Tropical Storm | -- |
| Sep 16 | 09:00 GMT | 15.16 | 156.96 | 60 mph | 987 mb | Severe Tropical Storm | -- |
| Sep 16 | 06:00 GMT | 15.1 | 157.4 | 60 mph | 990 mb | Severe Tropical Storm | -- |
| Sep 16 | 03:00 GMT | 14.97 | 158.03 | 50 mph | 995 mb | Tropical Storm | -- |
| Sep 16 | 00:00 GMT | 14.8 | 158.7 | 40 mph | 1,000 mb | Tropical Storm | -- |
| Sep 15 | 21:00 GMT | 14.66 | 159.21 | -- | 1,002 mb | Tropical Depression | -- |
| Sep 15 | 18:00 GMT | 14.5 | 159.8 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 15:00 GMT | 14.26 | 160.67 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 12:00 GMT | 14 | 161.6 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 09:00 GMT | 13.77 | 162.36 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 06:00 GMT | 13.6 | 163.1 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 03:00 GMT | 13.53 | 163.97 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 15 | 00:00 GMT | 13.5 | 164.8 | -- | 1,004 mb | Tropical Depression | -- |
| Sep 14 | 21:00 GMT | 13.46 | 165.45 | -- | 1,005 mb | Tropical Depression | -- |
| Sep 14 | 18:00 GMT | 13.4 | 166 | -- | 1,006 mb | Tropical Depression | -- |
| Sep 14 | 15:00 GMT | 13.24 | 166.58 | -- | 1,006 mb | Tropical Depression | -- |
| Sep 14 | 12:00 GMT | 13.1 | 167.1 | -- | 1,006 mb | Tropical Depression | -- |
| Sep 14 | 09:00 GMT | 13.09 | 167.52 | -- | 1,006 mb | Tropical Depression | -- |
| Sep 14 | 06:00 GMT | 13.1 | 167.9 | -- | 1,006 mb | Tropical Depression | -- |
| Sep 14 | 03:00 GMT | 13.02 | 168.32 | -- | 1,007 mb | Tropical Depression | -- |
| Sep 14 | 00:00 GMT | 12.9 | 168.7 | -- | 1,008 mb | Tropical Depression | -- |
| Sep 13 | 21:00 GMT | 12.74 | 169.01 | -- | 1,009 mb | Tropical Depression | -- |
| Sep 13 | 18:00 GMT | 12.6 | 169.3 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 15:00 GMT | 12.53 | 169.67 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 12:00 GMT | 12.5 | 170 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 09:00 GMT | 12.45 | 170.21 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 06:00 GMT | 12.5 | 170.4 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 03:00 GMT | 12.7 | 170.67 | -- | 1,010 mb | Tropical Depression | -- |
| Sep 13 | 00:00 GMT | 13 | 171 | -- | 1,010 mb | Tropical Depression | -- |
Learn more about Typhoon Mireille and the 1991 Central Pacific hurricane season in our hurricane archive.
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