1911
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| not found |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 16.11.1911 10:41 | 5 | 0 |
In 1911 only traditional maximum is expected, which will be also very weak with ZHR likely not exceeding 5 meteors.
1912
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 27 | 968 | -0.00456 | 17.59 | -0.063 | 229.607 | 11.11.1912 3:25 | 1 | 0 |
| 10 | 1567 | -0.00285 | 41.56 | -0.390 | 232.829 | 14.11.1912 8:14 | 1 | 3 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 15.11.1912 16:50 | 5 | 0 |
In 1912 some separate meteors can be produced by very old 968 trail on 11 November. No additional enhancements are expected. Background maximum will be very weak, perhaps not exceeding 5 meteors on ZHR scale, it is to occur at 17 UT 15 November.
1913
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 27 | 1035 | -0.00015 | 3.41 | -0.002 | 237.449 | 11.11.1913 4:21 | 1 | 0 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 15.11.1913 23:00 | 5 | 0 |
In 1913 only weak background maximum is expected at 23 UT 15 November, without any additional enhancements from trails. Intensity of traiditional peak continues to be low, 5-7 meteors on ZHR scale.
1914
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| not found |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 16.11.1914 5:09 | 5 | 0 |
In 1914 Leonids can be weaker than in several previous years, also not outstanding. Even non-meaningful encounters with trails are not found for this year and background activity with peak at 5 UT 16 November will harldly exceed 5 meteors on ZHR scale.
1915
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 14 | 1466 | 0.00205 | -19.39 | -0.004 | 234.026 | 16.11.1915 7:13 | 1 | 0 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 16.11.1915 11:18 | 10-15 | 1 |
In 1915 only moderate background maximum is expected. It is to occur at 11 UT 16 November and its intensity will be 10-15 meteors on ZHR scale.
1916
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 22 | 1201 | -0.00258 | -6.35 | -0.024 | 235.289 | 16.11.1916 19:26 | 1 | 0 |
| 22 | 1201 | -0.00170 | -6.51 | 0.009 | 235.305 | 16.11.1916 19:49 | 1 | 0 |
| 23 | 1167 | -0.00158 | -6.77 | 0.013 | 235.785 | 17.11.1916 7:14 | 1 | 0 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 15.11.1916 17:27 | 15 | 1 |
In 1916 again only traditional maximum is expected, but background activity is already gradually going up. Its peak will occur at 17 UT 15 November and its intensity is expected to be normal, with ZHR about 15 meteors.
1917
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 24 | 1102 | 0.00138 | 15.99 | 0.008 | 236.433 | 18.11.1917 4:48 | 1 | 1 |
| 24 | 1102 | 0.00145 | 15.99 | 0.006 | 236.437 | 18.11.1917 4:54 | 1 | 1 |
| 24 | 1102 | 0.00356 | 16.35 | -0.025 | 236.946 | 18.11.1917 17:01 | 1 | 1 |
| 23 | 1135 | -0.00134 | 14.82 | -0.005 | 237.787 | 19.11.1917 13:01 | 1 | 1 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 15.11.1917 23:37 | 15 | 1 |
In 1917 at 0 UT 16 November traditional maximum of average intensity with ZHR about 15 meteors is expected. Sufficient outbursts from trails are not expected.
1918
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 14 | 1466 | 0.00004 | -15.48 | 0.001 | 234.192 | 16.11.1918 5:37 | 1 | 0 |
| 22 | 1201 | -0.00073 | -5.66 | -0.004 | 235.600 | 17.11.1918 15:08 | 1 | 0 |
| 20 | 1268 | -0.00060 | -5.26 | -0.011 | 235.887 | 17.11.1918 21:58 | 4 | 0 |
| 20 | 1268 | -0.00068 | -5.23 | 0.008 | 235.887 | 17.11.1918 21:59 | 2 | 0 |
| 24 | 1102 | 0.00021 | 15.24 | -0.038 | 236.933 | 18.11.1918 22:52 | 7 | 1 |
| 24 | 1102 | -0.00001 | 15.08 | 0.012 | 237.028 | 19.11.1918 1:06 | 2 | 1 |
| 24 | 1102 | 0.00030 | 14.46 | 0.008 | 237.033 | 19.11.1918 1:14 | 1 | 1 |
| 24 | 1102 | 0.00024 | 14.47 | -0.003 | 237.076 | 19.11.1918 2:15 | 1 | 1 |
| 23 | 1135 | -0.00135 | 14.69 | -0.004 | 238.150 | 20.11.1918 3:48 | 1 | 1 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 16.11.1918 5:46 | 20-25 | 3 |
In 1918 at 6 UT 16 November intensive traditional maximum with ZHR about 20-25 meteors is expected. Also two additional small enhancements are possible. The first, very unlikely, from 1268 trail, can occur at 22 UT 17 November with maximal ZHR ~15 meteors. It should be notable with increase of numbers of bright meteors and fireballs. The next, somewhat more likely peak from 1102 trail can occur at 23 UT 18 November. Its intensity also should not surpass 10-15 meteors on ZHR scale, but in contrast to the previous trail, meteors from 1102 trals should be quite faint.
1919
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 24 | 1135 | 0.00030 | -8.70 | 0.004 | 234.605 | 16.11.1918 21:36 | 1 | 0 |
| 24 | 1135 | -0.00075 | -8.70 | -0.004 | 234.605 | 17.11.1918 1:13 | 1 | 0 |
| 9 | 1633 | 0.00021 | -23.82 | 0.031 | 236.193 | 18.11.1918 11:24 | 29 | 0 |
| 23 | 1135 | -0.00292 | 14.06 | 0.013 | 238.034 | 20.11.1918 8:23 | 1 | 1 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 16.11.1919 11:55 | 20 | 3 |
In 1919 at 12 UT 16 November quite intensive traditional maximum with ZHR=20 meteors is expected. Also some activity from 1633 trail is possible with maximum at 11 UT 18 November. The main sign of such activity would be increase of numbers of bright meteors and fireballs, but intensity prediction of such activity is very difficult.
1920
| encounters with trails |
| trail | year | rD-rE | Vej | fM(fMD) | sol.long. | Max. time | ZHRex | Reliability |
| rev. | - | m/s | - | ° | AU | UT | meteors | - |
| 10 | 1600 | -0.00062 | -28.98 | 0.026 | 234.020 | 15.11.1918 13:50 | 3 | 0 |
| 10 | 1600 | -0.00068 | -28.99 | -0.058 | 234.040 | 15.11.1918 14:18 | 7 | 0 |
| 13 | 1499 | 0.00006 | -15.16 | 0.009 | 236.265 | 17.11.1918 19:16 | 12 | 0 |
| traditional maximum |
| sol.long. | Max. time | ZHRex | Intensity |
| ° | UT | meteors | - |
| 234.198 | 15.11.1921 18:04 | 15 | 2 |
In 1920 at 18 UT 16 November traditional maximum of average intensity with ZHR=15 meteors is expected. Also at 14 UT 15 November and 19 UT 17 November some signs of activity from, respectively, 1600 and 1499 trails are posssible. Their action (if it materializes) will most likely be expressed in appearance of separate bright meteors and fireball in addition to background activity.