Storm Activity: Jul 21, 1991 - Jul 30, 1991
Jul 30 · 12:00 GMT -- 992 mb Extratropical
| Jul 30 | 12:00 GMT | 43 | 137 | -- | 992 mb | Extratropical | -- |
| Jul 30 | 09:00 GMT | 42.1 | 136.1 | 60 mph | 985 mb | Severe Tropical Storm | -- |
| Jul 30 | 06:00 GMT | 41.3 | 135.2 | 60 mph | 985 mb | Severe Tropical Storm | -- |
| Jul 30 | 03:00 GMT | 40.4 | 134.4 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Jul 30 | 00:00 GMT | 39.5 | 133.5 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Jul 29 | 21:00 GMT | 38.4 | 132.4 | 70 mph | 975 mb | Severe Tropical Storm | -- |
| Jul 29 | 18:00 GMT | 37.6 | 131.7 | 70 mph | 970 mb | Severe Tropical Storm | -- |
| Jul 29 | 15:00 GMT | 36.8 | 131.2 | 75 mph | 965 mb | Typhoon | 1 |
| Jul 29 | 12:00 GMT | 35.9 | 130.6 | 75 mph | 965 mb | Typhoon | 1 |
| Jul 29 | 09:00 GMT | 35.1 | 129.9 | 75 mph | 960 mb | Typhoon | 1 |
| Jul 29 | 06:00 GMT | 34.3 | 129.1 | 80 mph | 955 mb | Typhoon | 1 |
| Jul 29 | 03:00 GMT | 33.6 | 128.5 | 85 mph | 950 mb | Typhoon | 1 |
| Jul 29 | 00:00 GMT | 33 | 128 | 85 mph | 950 mb | Typhoon | 1 |
| Jul 28 | 21:00 GMT | 32.4 | 127.5 | 90 mph | 945 mb | Typhoon | 1 |
| Jul 28 | 18:00 GMT | 31.8 | 127.3 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 15:00 GMT | 31.1 | 127.3 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 12:00 GMT | 30.5 | 127.3 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 09:00 GMT | 29.9 | 127.2 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 06:00 GMT | 29.3 | 127 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 03:00 GMT | 28.8 | 126.9 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 28 | 00:00 GMT | 28.4 | 126.9 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 27 | 21:00 GMT | 27.8 | 126.9 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 27 | 18:00 GMT | 27.2 | 126.8 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 27 | 15:00 GMT | 26.6 | 126.7 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 27 | 12:00 GMT | 26.1 | 126.6 | 90 mph | 940 mb | Typhoon | 1 |
| Jul 27 | 09:00 GMT | 25.6 | 126.5 | 85 mph | 945 mb | Typhoon | 1 |
| Jul 27 | 06:00 GMT | 25.1 | 126.4 | 85 mph | 950 mb | Typhoon | 1 |
| Jul 27 | 03:00 GMT | 24.7 | 126.3 | 85 mph | 950 mb | Typhoon | 1 |
| Jul 27 | 00:00 GMT | 24.4 | 126.3 | 85 mph | 955 mb | Typhoon | 1 |
| Jul 26 | 21:00 GMT | 24.1 | 126.5 | 85 mph | 955 mb | Typhoon | 1 |
| Jul 26 | 18:00 GMT | 23.7 | 126.7 | 85 mph | 960 mb | Typhoon | 1 |
| Jul 26 | 15:00 GMT | 23.4 | 126.8 | 85 mph | 960 mb | Typhoon | 1 |
| Jul 26 | 12:00 GMT | 23.2 | 127 | 85 mph | 965 mb | Typhoon | 1 |
| Jul 26 | 09:00 GMT | 22.8 | 127.2 | 80 mph | 965 mb | Typhoon | 1 |
| Jul 26 | 06:00 GMT | 22.3 | 127.4 | 80 mph | 965 mb | Typhoon | 1 |
| Jul 26 | 03:00 GMT | 21.7 | 127.7 | 80 mph | 965 mb | Typhoon | 1 |
| Jul 26 | 00:00 GMT | 21.2 | 127.9 | 80 mph | 965 mb | Typhoon | 1 |
| Jul 25 | 21:00 GMT | 20.73 | 128.19 | 75 mph | 967 mb | Typhoon | 1 |
| Jul 25 | 18:00 GMT | 20.3 | 128.5 | 75 mph | 970 mb | Typhoon | 1 |
| Jul 25 | 15:00 GMT | 19.9 | 128.74 | 70 mph | 972 mb | Severe Tropical Storm | -- |
| Jul 25 | 12:00 GMT | 19.5 | 129 | 70 mph | 975 mb | Severe Tropical Storm | -- |
| Jul 25 | 09:00 GMT | 19.05 | 129.36 | 65 mph | 977 mb | Severe Tropical Storm | -- |
| Jul 25 | 06:00 GMT | 18.6 | 129.7 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Jul 25 | 03:00 GMT | 18.2 | 129.92 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Jul 25 | 00:00 GMT | 17.8 | 130.1 | 65 mph | 980 mb | Severe Tropical Storm | -- |
| Jul 24 | 21:00 GMT | 17.36 | 130.29 | 60 mph | 982 mb | Severe Tropical Storm | -- |
| Jul 24 | 18:00 GMT | 16.9 | 130.5 | 60 mph | 985 mb | Severe Tropical Storm | -- |
| Jul 24 | 15:00 GMT | 16.45 | 130.75 | 55 mph | 987 mb | Tropical Storm | -- |
| Jul 24 | 12:00 GMT | 16 | 131 | 50 mph | 990 mb | Tropical Storm | -- |
| Jul 24 | 09:00 GMT | 15.54 | 131.19 | 50 mph | 992 mb | Tropical Storm | -- |
| Jul 24 | 06:00 GMT | 15.1 | 131.4 | 50 mph | 994 mb | Tropical Storm | -- |
| Jul 24 | 03:00 GMT | 14.67 | 131.66 | 50 mph | 995 mb | Tropical Storm | -- |
| Jul 24 | 00:00 GMT | 14.3 | 132 | 50 mph | 996 mb | Tropical Storm | -- |
| Jul 23 | 21:00 GMT | 14.01 | 132.44 | -- | 998 mb | Tropical Depression | -- |
| Jul 23 | 18:00 GMT | 13.8 | 132.9 | -- | 1,000 mb | Tropical Depression | -- |
| Jul 23 | 15:00 GMT | 13.68 | 133.29 | -- | 1,001 mb | Tropical Depression | -- |
| Jul 23 | 12:00 GMT | 13.6 | 133.7 | -- | 1,002 mb | Tropical Depression | -- |
| Jul 23 | 09:00 GMT | 13.46 | 134.2 | -- | 1,002 mb | Tropical Depression | -- |
| Jul 23 | 06:00 GMT | 13.3 | 134.7 | -- | 1,002 mb | Tropical Depression | -- |
| Jul 23 | 03:00 GMT | 13.15 | 135.14 | -- | 1,002 mb | Tropical Depression | -- |
| Jul 23 | 00:00 GMT | 13 | 135.5 | -- | 1,002 mb | Tropical Depression | -- |
| Jul 22 | 21:00 GMT | 12.86 | 135.77 | -- | 1,003 mb | Tropical Depression | -- |
| Jul 22 | 18:00 GMT | 12.7 | 136 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 15:00 GMT | 12.5 | 136.22 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 12:00 GMT | 12.3 | 136.5 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 09:00 GMT | 12.13 | 136.94 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 06:00 GMT | 12 | 137.4 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 03:00 GMT | 11.92 | 137.73 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 22 | 00:00 GMT | 11.9 | 138 | -- | 1,004 mb | Tropical Depression | -- |
| Jul 21 | 21:00 GMT | 11.94 | 138.25 | -- | 1,005 mb | Tropical Depression | -- |
| Jul 21 | 18:00 GMT | 12 | 138.5 | -- | 1,006 mb | Tropical Depression | -- |
Learn more about Typhoon Caitlin and the 1991 Western Pacific hurricane season in our hurricane archive.
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