| Unnamed storm 1, 1940 West Pacific | Feb 1 – Feb 1 | — | — | Storm |
| Unnamed storm 2, 1940 West Pacific | Apr 9 – Apr 13 | — | — | Storm |
| Unnamed storm 3, 1940 West Pacific | Apr 23 – Apr 28 | — | — | Storm |
| Unnamed storm 4, 1940 West Pacific | Jun 9 – Jun 16 | — | — | Storm |
| Unnamed storm 5, 1940 West Pacific | Jun 29 – Jul 9 | — | — | Storm |
| Unnamed storm 6, 1940 West Pacific | Jul 4 – Jul 17 | — | — | Storm |
| Unnamed storm 7, 1940 West Pacific | Jul 11 – Jul 12 | — | — | Storm |
| Unnamed storm 8, 1940 West Pacific | Jul 12 – Jul 26 | — | — | Storm |
| Unnamed storm 9, 1940 West Pacific | Jul 13 – Jul 14 | — | — | Storm |
| Unnamed storm 10, 1940 West Pacific | Jul 18 – Jul 23 | — | — | Storm |
| Unnamed storm 11, 1940 West Pacific | Jul 20 – Jul 28 | — | — | Storm |
| Unnamed storm 12, 1940 West Pacific | Jul 24 – Jul 31 | — | — | Storm |
| Unnamed storm 13, 1940 West Pacific | Aug 1 – Aug 4 | — | — | Storm |
| Unnamed storm 14, 1940 West Pacific | Aug 1 – Aug 3 | — | — | Storm |
| Unnamed storm 15, 1940 West Pacific | Aug 11 – Aug 17 | — | — | Storm |
| Unnamed storm 16, 1940 West Pacific | Aug 13 – Aug 22 | — | — | Storm |
| Unnamed storm 17, 1940 West Pacific | Aug 14 – Aug 15 | — | — | Storm |
| Unnamed storm 18, 1940 West Pacific | Aug 18 – Aug 28 | — | — | Storm |
| Unnamed storm 19, 1940 West Pacific | Aug 21 – Aug 25 | — | — | Storm |
| Unnamed storm 20, 1940 West Pacific | Aug 23 – Sep 3 | — | — | Storm |
| Unnamed storm 21, 1940 West Pacific | Aug 28 – Aug 29 | — | — | Storm |
| Unnamed storm 22, 1940 West Pacific | Aug 30 – Sep 4 | — | — | Storm |
| Unnamed storm 23, 1940 West Pacific | Sep 1 – Sep 12 | — | — | Storm |
| Unnamed storm 24, 1940 West Pacific | Sep 2 – Sep 6 | — | — | Storm |
| Unnamed storm 25, 1940 West Pacific | Sep 3 – Sep 4 | — | — | Storm |
| Unnamed storm 26, 1940 West Pacific | Sep 4 – Sep 6 | — | — | Storm |
| Unnamed storm 27, 1940 West Pacific | Sep 9 – Sep 19 | — | — | Storm |
| Unnamed storm 28, 1940 West Pacific | Sep 10 – Sep 12 | — | — | Storm |
| Unnamed storm 29, 1940 West Pacific | Sep 22 – Oct 2 | — | — | Storm |
| Unnamed storm 30, 1940 West Pacific | Sep 29 – Oct 5 | — | — | Storm |
| Unnamed storm 31, 1940 West Pacific | Oct 8 – Oct 14 | — | — | Storm |
| Unnamed storm 32, 1940 West Pacific | Oct 11 – Oct 15 | — | — | Storm |
| Unnamed storm 33, 1940 West Pacific | Oct 28 – Nov 10 | — | — | Storm |
| Unnamed storm 34, 1940 West Pacific | Nov 22 – Nov 29 | — | — | Storm |
| Unnamed storm 35, 1940 West Pacific | Dec 2 – Dec 6 | — | — | Storm |
| Unnamed storm 36, 1940 West Pacific | Dec 5 – Dec 8 | — | — | Storm |
| Unnamed storm 37, 1940 West Pacific | Dec 8 – Dec 24 | — | — | Storm |