Storm Activity: Sep 18, 1959 - Sep 22, 1959
Sep 22 · 06:00 GMT -- 1,004 mb Extra-Tropical Low
| Sep 22 | 06:00 GMT | 13 | 128.6 | -- | 1,004 mb | Extra-Tropical Low | -- |
| Sep 22 | 03:00 GMT | 13.33 | 129.24 | -- | 1,005 mb | Extra-Tropical Low | -- |
| Sep 22 | 00:00 GMT | 13.6 | 129.8 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 21:00 GMT | 13.8 | 130.24 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 18:00 GMT | 14 | 130.7 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 15:00 GMT | 14.29 | 131.34 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 12:00 GMT | 14.6 | 132 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 09:00 GMT | 14.89 | 132.51 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 21 | 06:00 GMT | 15.2 | 133 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 21 | 03:00 GMT | 15.59 | 133.58 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 21 | 00:00 GMT | 15.9 | 134.2 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 20 | 21:00 GMT | 16.03 | 134.9 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 20 | 18:00 GMT | 16 | 135.5 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 20 | 15:00 GMT | 15.87 | 135.84 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 20 | 12:00 GMT | 15.6 | 136 | -- | 1,007 mb | Extra-Tropical Low | -- |
| Sep 20 | 09:00 GMT | 15.17 | 136.08 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 20 | 06:00 GMT | 14.7 | 136.1 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 20 | 03:00 GMT | 14.33 | 136.12 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 20 | 00:00 GMT | 14 | 136.2 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 19 | 21:00 GMT | 13.67 | 136.4 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 19 | 18:00 GMT | 13.4 | 136.7 | -- | 1,006 mb | Extra-Tropical Low | -- |
| Sep 19 | 15:00 GMT | 13.23 | 137.04 | -- | 1,005 mb | Tropical Depression | -- |
| Sep 19 | 12:00 GMT | 13.1 | 137.5 | 35 mph | 1,004 mb | Tropical Depression | -- |
| Sep 19 | 09:00 GMT | 12.93 | 138.12 | 35 mph | 1,003 mb | Tropical Depression | -- |
| Sep 19 | 06:00 GMT | 12.7 | 138.8 | 35 mph | 1,002 mb | Tropical Depression | -- |
| Sep 19 | 03:00 GMT | 12.37 | 139.41 | 35 mph | 1,002 mb | Tropical Depression | -- |
| Sep 19 | 00:00 GMT | 12 | 140 | 35 mph | 1,003 mb | Tropical Depression | -- |
| Sep 18 | 21:00 GMT | 11.61 | 140.64 | 35 mph | 1,003 mb | Tropical Depression | -- |
| Sep 18 | 18:00 GMT | 11.3 | 141.2 | 35 mph | 1,003 mb | Tropical Depression | -- |
| Sep 18 | 15:00 GMT | 11.2 | 141.59 | -- | 1,003 mb | Extra-Tropical Low | -- |
| Sep 18 | 12:00 GMT | 11.2 | 141.9 | -- | 1,004 mb | Extra-Tropical Low | -- |
| Sep 18 | 09:00 GMT | 11.21 | 142.24 | -- | 1,004 mb | Extra-Tropical Low | -- |
| Sep 18 | 06:00 GMT | 11.2 | 142.6 | -- | 1,004 mb | Extra-Tropical Low | -- |
Learn more about Tropical Depression Thelma and the 1959 Western Pacific hurricane season in our hurricane archive.
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