562
Recorded events
4
Counties affected
17
Direct deaths
$1.3B
Property damage
Hawaii flash flood history: 562 recorded events across 4 counties between 1996 and 2026.
Decade by decade
Hawaii flash flood history by decade
The 2010s are the busiest decade on record with 257 reported flash flood events across Hawaii. Earlier decades are thinner because systematic reporting for this hazard expanded over time, not because the weather was calmer.
County ranking
Counties with the most flash flood events in Hawaii
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Kauai County | 149 | 9 | $93.3M | 1996–2026 |
| #2 | Honolulu County | 147 | 0 | $1.1B | 1996–2026 |
| #3 | Hawaii County | 137 | 5 | $90.2M | 1996–2026 |
| #4 | Maui County | 129 | 3 | $49.2M | 1996–2026 |
Significant events
Deadliest flash flood events in Hawaii
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Mar 14, 2006 | Kauai County | — | 7 | 0 |
| Apr 11, 2003 | Maui County | — | 2 | 0 |
| Feb 19, 2018 | Hawaii County | — | 1 | 0 |
| Dec 4, 2016 | Kauai County | — | 1 | 0 |
| Aug 28, 2018 | Kauai County | — | 1 | 0 |
| Jul 11, 2011 | Hawaii County | — | 1 | 1 |
| Dec 20, 2012 | Hawaii County | — | 1 | 0 |
| Jan 27, 2023 | Maui County | — | 1 | 0 |
| Sep 15, 2015 | Hawaii County | — | 1 | 0 |
| Jan 22, 2017 | Hawaii County | — | 1 | 0 |