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Flood in Lyon County, Nevada
31 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Lyon County, Nevada, has 31 flood events in the NCEI record since 1950, with at least one in 16 different years.
July is the busiest month, with 15 of the recorded events. The last 20 years account for 24 events against 7 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 3.4% of the 918 flood events recorded in Nevada; its 1.5 per 100 square miles compares with 0.8 statewide.
Compared with Nevada
| Measure | Lyon County | Nevada | US |
|---|---|---|---|
| Flood events since 1950 | 31 | 918 | 183,559 |
| Per 100 square miles | 1.5 | 0.8 | 5.2 |
| Per 10,000 residents | 5.1 | 2.9 | 5.5 |
| Deaths recorded | 0 | 15 | 2,961 |
| Busiest month | July | July | June |
By year
Seasonality
4Feb
0Mar
1Apr
0May
1Jun
6Jul
15Aug
2Sep
1Oct
0Nov
0Dec
1
Recorded events
All 31 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 19 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 26 Aug 2025 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2024 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2023 | Flash Flood | — | — | — | — | — | County |
| 9 Mar 2023 | Flood | — | — | — | — | — | County |
| 1 Jul 2021 | Flood | — | — | — | — | — | County |
| 24 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2017 | Flash Flood | — | $25K | — | — | — | County |
| 8 Jan 2017 | Flood | — | $1.3M | — | — | — | County |
| 8 Jul 2015 | Flash Flood | — | $1K | — | — | — | County |
| 6 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2015 | Flash Flood | — | $20K | — | — | — | County |
| 28 Jul 2013 | Flash Flood | — | $25K | — | — | — | County |
| 4 Jul 2013 | Flash Flood | — | $1K | — | — | — | County |
| 4 Jul 2013 | Flash Flood | — | $25K | — | — | — | County |
| 4 Jul 2013 | Flash Flood | — | $10K | — | — | — | County |
| 10 Jun 2013 | Flash Flood | — | $1K | — | — | — | County |
| 7 Jul 2011 | Flash Flood | — | $5K | — | — | — | County |
| 12 Jun 2011 | Flood | — | $50K | — | — | — | County |
| 16 Jul 2010 | Flash Flood | — | $1K | — | — | — | County |
| 5 Jan 2008 | Flood | — | — | — | — | — | County |
| 5 Jan 2008 | Flash Flood | — | $6.6M | — | — | — | County |
| 19 May 2006 | Flood | — | $50K | — | — | — | County |
| 1 Jan 2006 | Flood | — | $165K | — | — | — | County |
| 31 Dec 2005 | Flood | — | $305K | — | — | — | County |
| 21 Jul 2004 | Flash Flood | — | — | — | — | — | County |
| 4 Sep 2003 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2003 | Flash Flood | — | $5K | — | — | — | County |
| 2 Aug 2002 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Lyon County had?
31 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Lyon County?
19 Jun 2026 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Lyon County?
The flash flood of 5 Jan 2008, with property damage estimated by NCEI at $6.6M.
How does Lyon County compare with Nevada for flood?
1.5 events per 100 square miles against 0.8 statewide; the county holds 31 of the state's 918 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.