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Flood in Chelan County, Washington
79 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.
NCEI records 79 flood events in Chelan County, Washington, between 1950 and 2026, spread over 19 years.
June is the busiest month, with 24 of the recorded events. The last 20 years account for 64 events against 15 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 9.5% of the 832 flood events recorded in Washington; its 2.7 per 100 square miles compares with 1.3 statewide.
Compared with Washington
| Measure | Chelan County | Washington | US |
|---|---|---|---|
| Flood events since 1950 | 79 | 832 | 183,559 |
| Per 100 square miles | 2.7 | 1.3 | 5.2 |
| Per 10,000 residents | 9.9 | 1.1 | 5.5 |
| Deaths recorded | 0 | 12 | 2,961 |
| Busiest month | June | January | June |
By year
Seasonality
3Feb
0Mar
5Apr
0May
8Jun
24Jul
8Aug
8Sep
8Oct
1Nov
8Dec
6
Recorded events
All 79 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 |
|---|---|---|---|---|---|---|---|
| 20 Mar 2026 | Flood | — | $1K | — | — | — | County |
| 20 Mar 2026 | Flood | — | $2K | — | — | — | County |
| 18 Mar 2026 | Flood | — | $10K | — | — | — | County |
| 10 Dec 2025 | Flood | — | $200K | — | — | — | County |
| 10 Dec 2025 | Flood | — | $200K | — | — | — | County |
| 9 Dec 2025 | Flood | — | $1K | — | — | — | County |
| 8 Dec 2025 | Flood | — | $100K | — | — | — | County |
| 23 Aug 2024 | Flash Flood | — | $500 | — | — | — | County |
| 27 Jun 2023 | Flash Flood | — | $1K | — | — | — | County |
| 20 May 2023 | Flash Flood | — | $500 | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | $5K | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | $8K | — | — | — | County |
| 3 Jul 2022 | Flash Flood | — | $1K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $100K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2022 | Flash Flood | — | $80K | — | — | — | County |
| 5 Jun 2022 | Flood | — | $10K | — | — | — | County |
| 2 Jun 2022 | Flash Flood | — | $20K | — | — | — | County |
| 8 Sep 2019 | Flash Flood | — | $2K | — | — | — | County |
| 10 Aug 2019 | Flash Flood | — | $50K | — | — | — | County |
| 10 Aug 2019 | Flash Flood | — | $50K | — | — | — | County |
| 10 Aug 2019 | Flash Flood | — | $500 | — | — | — | County |
| 2 Jul 2019 | Flash Flood | — | $5K | — | — | — | County |
| 2 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2019 | Flash Flood | — | $1K | — | — | — | County |
| 26 Jun 2019 | Flash Flood | — | $2K | — | — | — | County |
| 26 Jun 2019 | Flash Flood | — | $3K | — | — | — | County |
| 15 May 2018 | Flood | — | $250 | — | — | — | County |
| 23 Nov 2017 | Flood | — | — | — | — | — | County |
| 23 Nov 2017 | Flood | — | $3K | — | — | — | County |
| 1 Jun 2017 | Flood | — | $2K | — | — | — | County |
| 23 May 2017 | Flood | — | $5K | — | — | — | County |
| 9 Dec 2015 | Flood | — | — | — | — | — | County |
| 31 Oct 2015 | Flood | — | — | — | — | — | County |
| 5 Jan 2015 | Flood | — | — | — | — | — | County |
| 14 Aug 2014 | Flash Flood | — | $5K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $700K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $43K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $10K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $40K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $330K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $110K | — | — | — | County |
| 5 Sep 2013 | Flash Flood | — | $50K | — | — | — | County |
| 10 Aug 2013 | Flash Flood | — | $50K | — | — | — | County |
| 29 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 10 Jun 2011 | Flood | — | $1K | — | — | — | County |
| 28 May 2011 | Flood | — | — | — | — | — | County |
| 15 May 2011 | Flood | — | $20K | — | — | — | County |
| 31 Mar 2011 | Flood | — | $10K | — | — | — | County |
| 30 Mar 2011 | Flood | — | — | — | — | — | County |
| 4 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2010 | Flash Flood | — | $20K | — | — | — | County |
| 28 Jul 2010 | Flash Flood | — | $500K | — | — | — | County |
| 12 Jun 2009 | Flash Flood | — | $1K | — | — | — | County |
| 12 Jun 2009 | Flash Flood | — | $1K | — | — | — | County |
| 7 Jan 2009 | Flood | — | $1.1M | — | — | — | County |
| 6 Jan 2009 | Flood | — | $10K | — | — | — | County |
| 12 Nov 2008 | Flood | — | — | — | — | — | County |
| 12 Nov 2008 | Flood | — | — | — | — | — | County |
| 8 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 17 May 2008 | Flood | — | — | — | — | — | County |
| 7 Nov 2006 | Flood | — | — | — | — | — | County |
| 7 Nov 2006 | Flood | — | — | — | — | — | County |
| 7 Nov 2006 | Flood | — | — | — | — | — | County |
| 6 Nov 2006 | Flood | — | $569K | — | — | — | County |
| 5 Jul 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 17 May 2006 | Flood | — | — | — | — | — | County |
| 9 May 2005 | Flash Flood | — | — | — | — | — | County |
| 28 Dec 1998 | Flash Flood | — | $80K | — | — | — | County |
| 17 Jun 1997 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Chelan County had?
79 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 Chelan County?
20 Mar 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Chelan County?
The flood of 7 Jan 2009, with property damage estimated by NCEI at $1.1M.
How does Chelan County compare with Washington for flood?
2.7 events per 100 square miles against 1.3 statewide; the county holds 79 of the state's 832 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.