Storm Activity: May 21, 1940 - May 31, 1940
May 31 · 06:00 GMT -- -- Unknown
| May 31 | 06:00 GMT | -12.5 | 54 | -- | -- | Unknown | -- |
| May 31 | 03:00 GMT | -12.47 | 54.16 | -- | -- | Unknown | -- |
| May 31 | 00:00 GMT | -12.44 | 54.32 | -- | -- | Unknown | -- |
| May 30 | 21:00 GMT | -12.4 | 54.48 | -- | -- | Unknown | -- |
| May 30 | 18:00 GMT | -12.37 | 54.65 | -- | -- | Unknown | -- |
| May 30 | 15:00 GMT | -12.33 | 54.82 | -- | -- | Unknown | -- |
| May 30 | 12:00 GMT | -12.29 | 55 | -- | -- | Unknown | -- |
| May 30 | 09:00 GMT | -12.25 | 55.2 | -- | -- | Unknown | -- |
| May 30 | 06:00 GMT | -12.2 | 55.4 | -- | -- | Unknown | -- |
| May 30 | 03:00 GMT | -12.15 | 55.62 | -- | -- | Unknown | -- |
| May 30 | 00:00 GMT | -12.09 | 55.84 | -- | -- | Unknown | -- |
| May 29 | 21:00 GMT | -12.03 | 56.08 | -- | -- | Unknown | -- |
| May 29 | 18:00 GMT | -11.96 | 56.33 | -- | -- | Unknown | -- |
| May 29 | 15:00 GMT | -11.9 | 56.59 | -- | -- | Unknown | -- |
| May 29 | 12:00 GMT | -11.83 | 56.85 | -- | -- | Unknown | -- |
| May 29 | 09:00 GMT | -11.77 | 57.12 | -- | -- | Unknown | -- |
| May 29 | 06:00 GMT | -11.7 | 57.4 | -- | -- | Unknown | -- |
| May 29 | 03:00 GMT | -11.63 | 57.69 | -- | -- | Unknown | -- |
| May 29 | 00:00 GMT | -11.56 | 57.99 | -- | -- | Unknown | -- |
| May 28 | 21:00 GMT | -11.49 | 58.29 | -- | -- | Unknown | -- |
| May 28 | 18:00 GMT | -11.42 | 58.59 | -- | -- | Unknown | -- |
| May 28 | 15:00 GMT | -11.36 | 58.88 | -- | -- | Unknown | -- |
| May 28 | 12:00 GMT | -11.3 | 59.17 | -- | -- | Unknown | -- |
| May 28 | 09:00 GMT | -11.24 | 59.44 | -- | -- | Unknown | -- |
| May 28 | 06:00 GMT | -11.2 | 59.7 | -- | -- | Unknown | -- |
| May 28 | 03:00 GMT | -11.18 | 59.91 | -- | -- | Unknown | -- |
| May 28 | 00:00 GMT | -11.16 | 60.11 | -- | -- | Unknown | -- |
| May 27 | 21:00 GMT | -11.15 | 60.29 | -- | -- | Unknown | -- |
| May 27 | 18:00 GMT | -11.15 | 60.46 | -- | -- | Unknown | -- |
| May 27 | 15:00 GMT | -11.14 | 60.64 | -- | -- | Unknown | -- |
| May 27 | 12:00 GMT | -11.14 | 60.81 | -- | -- | Unknown | -- |
| May 27 | 09:00 GMT | -11.12 | 61 | -- | -- | Unknown | -- |
| May 27 | 06:00 GMT | -11.1 | 61.2 | -- | -- | Unknown | -- |
| May 27 | 03:00 GMT | -11.05 | 61.44 | -- | -- | Unknown | -- |
| May 27 | 00:00 GMT | -11 | 61.69 | -- | -- | Unknown | -- |
| May 26 | 21:00 GMT | -10.94 | 61.95 | -- | -- | Unknown | -- |
| May 26 | 18:00 GMT | -10.87 | 62.21 | -- | -- | Unknown | -- |
| May 26 | 15:00 GMT | -10.8 | 62.48 | -- | -- | Unknown | -- |
| May 26 | 12:00 GMT | -10.73 | 62.76 | -- | -- | Unknown | -- |
| May 26 | 09:00 GMT | -10.67 | 63.03 | -- | -- | Unknown | -- |
| May 26 | 06:00 GMT | -10.6 | 63.3 | -- | -- | Unknown | -- |
| May 26 | 03:00 GMT | -10.55 | 63.55 | -- | -- | Unknown | -- |
| May 26 | 00:00 GMT | -10.5 | 63.79 | -- | -- | Unknown | -- |
| May 25 | 21:00 GMT | -10.45 | 64.04 | -- | -- | Unknown | -- |
| May 25 | 18:00 GMT | -10.41 | 64.28 | -- | -- | Unknown | -- |
| May 25 | 15:00 GMT | -10.36 | 64.53 | -- | -- | Unknown | -- |
| May 25 | 12:00 GMT | -10.31 | 64.78 | -- | -- | Unknown | -- |
| May 25 | 09:00 GMT | -10.26 | 65.04 | -- | -- | Unknown | -- |
| May 25 | 06:00 GMT | -10.2 | 65.3 | -- | -- | Unknown | -- |
| May 25 | 03:00 GMT | -10.13 | 65.57 | -- | -- | Unknown | -- |
| May 25 | 00:00 GMT | -10.06 | 65.85 | -- | -- | Unknown | -- |
| May 24 | 21:00 GMT | -9.99 | 66.14 | -- | -- | Unknown | -- |
| May 24 | 18:00 GMT | -9.91 | 66.43 | -- | -- | Unknown | -- |
| May 24 | 15:00 GMT | -9.84 | 66.72 | -- | -- | Unknown | -- |
| May 24 | 12:00 GMT | -9.76 | 67.01 | -- | -- | Unknown | -- |
| May 24 | 09:00 GMT | -9.68 | 67.31 | -- | -- | Unknown | -- |
| May 24 | 06:00 GMT | -9.6 | 67.6 | -- | -- | Unknown | -- |
| May 24 | 03:00 GMT | -9.52 | 67.87 | -- | -- | Unknown | -- |
| May 24 | 00:00 GMT | -9.45 | 68.15 | -- | -- | Unknown | -- |
| May 23 | 21:00 GMT | -9.37 | 68.42 | -- | -- | Unknown | -- |
| May 23 | 18:00 GMT | -9.29 | 68.7 | -- | -- | Unknown | -- |
| May 23 | 15:00 GMT | -9.22 | 68.98 | -- | -- | Unknown | -- |
| May 23 | 12:00 GMT | -9.14 | 69.27 | -- | -- | Unknown | -- |
| May 23 | 09:00 GMT | -9.07 | 69.58 | -- | -- | Unknown | -- |
| May 23 | 06:00 GMT | -9 | 69.9 | -- | -- | Unknown | -- |
| May 23 | 03:00 GMT | -8.93 | 70.28 | -- | -- | Unknown | -- |
| May 23 | 00:00 GMT | -8.86 | 70.67 | -- | -- | Unknown | -- |
| May 22 | 21:00 GMT | -8.79 | 71.07 | -- | -- | Unknown | -- |
| May 22 | 18:00 GMT | -8.72 | 71.48 | -- | -- | Unknown | -- |
| May 22 | 15:00 GMT | -8.66 | 71.87 | -- | -- | Unknown | -- |
| May 22 | 12:00 GMT | -8.6 | 72.24 | -- | -- | Unknown | -- |
| May 22 | 09:00 GMT | -8.55 | 72.59 | -- | -- | Unknown | -- |
| May 22 | 06:00 GMT | -8.5 | 72.9 | -- | -- | Unknown | -- |
| May 22 | 03:00 GMT | -8.46 | 73.16 | -- | -- | Unknown | -- |
| May 22 | 00:00 GMT | -8.43 | 73.39 | -- | -- | Unknown | -- |
| May 21 | 21:00 GMT | -8.4 | 73.58 | -- | -- | Unknown | -- |
| May 21 | 18:00 GMT | -8.37 | 73.74 | -- | -- | Unknown | -- |
| May 21 | 15:00 GMT | -8.35 | 73.87 | -- | -- | Unknown | -- |
| May 21 | 12:00 GMT | -8.33 | 73.99 | -- | -- | Unknown | -- |
| May 21 | 09:00 GMT | -8.32 | 74.1 | -- | -- | Unknown | -- |
| May 21 | 06:00 GMT | -8.3 | 74.2 | -- | -- | Unknown | -- |
Learn more about Unnamed Unknown and the 1940 Southern Hemisphere hurricane season in our hurricane archive.
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