Every flood, flash flood and river flood warning the National Weather Service issued for California, November–March, colored by that winter's ENSO phase. The two strong El Niño winters, 2009-10 and 2015-16, were ordinary.
| Winter (Nov–Mar) | NWS flood warnings | Flash flood | Areal flood | River flood | Flood advisories | ENSO phase (RONI) |
|---|---|---|---|---|---|---|
| 2007-08 | 63 | 58 | 0 | 5 | 0 | La Niña |
| 2008-09 | 39 | 38 | 1 | 0 | 63 | La Niña |
| 2009-10 | 45 | 41 | 0 | 4 | 101 | strong El Niño |
| 2010-11 | 73 | 38 | 9 | 26 | 136 | La Niña |
| 2011-12 | 6 | 0 | 0 | 6 | 40 | La Niña |
| 2012-13 | 49 | 18 | 14 | 17 | 65 | La Niña |
| 2013-14 | 20 | 18 | 2 | 0 | 68 | neutral |
| 2014-15 | 81 | 48 | 11 | 22 | 122 | weak–moderate El Niño |
| 2015-16 | 61 | 41 | 3 | 17 | 137 | strong El Niño |
| 2016-17 | 355 | 140 | 94 | 121 | 294 | La Niña |
| 2017-18 | 21 | 16 | 2 | 3 | 84 | La Niña |
| 2018-19 | 158 | 70 | 40 | 48 | 200 | weak–moderate El Niño |
| 2019-20 | 50 | 41 | 9 | 0 | 138 | neutral |
| 2020-21 | 18 | 17 | 1 | 0 | 58 | La Niña |
| 2021-22 | 10 | 8 | 2 | 0 | 86 | La Niña |
| 2022-23 | 238 | 78 | 95 | 65 | 413 | La Niña |
| 2023-24 | 93 | 52 | 17 | 24 | 346 | weak–moderate El Niño |
| 2024-25 | 93 | 31 | 22 | 40 | 239 | La Niña |
| 2025-26 | 127 | 88 | 22 | 17 | 364 | La Niña |