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Flood in Boone County, Missouri
91 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 91 flood events in Boone County, Missouri, between 1950 and 2026, spread over 28 years.
June is the busiest month, with 23 of the recorded events. The last 20 years account for 60 events against 31 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.8% of the 10,821 flood events recorded in Missouri; its 13.3 per 100 square miles compares with 15.7 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with Missouri
| Measure | Boone County | Missouri | US |
|---|---|---|---|
| Flood events since 1950 | 91 | 10,821 | 183,559 |
| Per 100 square miles | 13.3 | 15.7 | 5.2 |
| Per 10,000 residents | 4.9 | 17.5 | 5.5 |
| Deaths recorded | 1 | 159 | 2,961 |
| Busiest month | June | May | June |
By year
Seasonality
2Feb
0Mar
3Apr
7May
19Jun
23Jul
12Aug
13Sep
6Oct
4Nov
1Dec
1
Recorded events
All 91 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 |
|---|---|---|---|---|---|---|---|
| 8 Jun 2026 | Flood | — | — | — | — | — | County |
| 7 Jun 2026 | Flood | — | — | — | — | — | County |
| 7 Jun 2026 | Flood | — | — | — | — | — | County |
| 7 Jun 2026 | Flash Flood | — | $60K | — | — | — | County |
| 1 Jun 2026 | Flash Flood | — | $60K | — | — | — | County |
| 31 May 2026 | Flood | — | — | — | — | — | County |
| 31 May 2026 | Flood | — | — | — | — | — | County |
| 2 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 14 Jul 2023 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2021 | Flood | — | — | — | — | — | County |
| 25 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 19 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2019 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 2019 | Flash Flood | — | — | — | — | — | County |
| 22 Jun 2019 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2018 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flash Flood | — | — | — | — | — | County |
| 2 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2016 | Flash Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 17 Nov 2015 | Flood | — | — | — | — | 2 | County |
| 1 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 7 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 3 Apr 2014 | Flash Flood | — | — | — | — | — | County |
| 31 May 2013 | Flash Flood | — | — | — | — | — | County |
| 26 May 2013 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2012 | Flash Flood | — | — | — | — | — | County |
| 25 May 2011 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 7 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2010 | Flood | — | — | — | — | — | County |
| 13 May 2010 | Flash Flood | — | — | — | — | — | County |
| 12 May 2010 | Flash Flood | — | — | — | — | — | County |
| 24 Apr 2010 | Flash Flood | — | — | — | — | — | County |
| 23 Apr 2010 | Flash Flood | — | — | — | — | — | County |
| 22 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 8 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 4 Jul 2009 | Flash Flood | — | — | — | — | — | County |
| 15 May 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2009 | Flash Flood | — | — | — | — | — | County |
| 24 Mar 2009 | Flash Flood | — | — | — | — | — | County |
| 13 Sep 2008 | Flood | — | — | — | 1 | — | County |
| 13 Sep 2008 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2008 | Flash Flood | — | — | — | — | — | County |
| 27 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 25 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 22 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 2008 | Flash Flood | — | $1K | — | — | — | County |
| 10 Apr 2008 | Flash Flood | — | $1K | — | — | — | County |
| 17 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 8 May 2007 | Flood | — | $10K | $25K | — | — | County |
| 6 May 2007 | Flash Flood | — | $45K | — | — | — | County |
| 6 May 2007 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 19 Sep 2005 | Flash Flood | — | — | — | — | — | County |
| 26 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 11 May 2005 | Flash Flood | — | — | — | — | — | County |
| 12 Jan 2005 | Flash Flood | — | — | — | — | — | County |
| 26 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 26 Mar 2004 | Flash Flood | — | $500K | — | — | — | County |
| 25 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2002 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2002 | Flash Flood | — | — | — | — | 1 | County |
| 12 May 2002 | Flash Flood | — | — | — | — | — | County |
| 9 May 2002 | Flash Flood | — | — | — | — | — | County |
| 8 May 2002 | Flood | — | — | — | — | — | Forecast zone |
| 7 May 2002 | Flash Flood | — | — | — | — | — | County |
| 19 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2001 | Flood | — | — | — | — | — | County |
| 4 Jun 2001 | Flood | — | — | — | — | — | Forecast zone |
| 17 May 2001 | Flash Flood | — | — | — | — | — | County |
| 28 Jan 2001 | Flood | — | — | — | — | — | County |
| 7 Aug 2000 | Flash Flood | — | — | — | — | — | County |
| 27 May 2000 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 1999 | Flash Flood | — | — | — | — | — | County |
| 6 Oct 1998 | Flood | — | — | — | — | — | Forecast zone |
| 5 Oct 1998 | Flash Flood | — | — | — | — | — | County |
| 27 Aug 1998 | Flood | — | — | — | — | — | County |
| 4 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 8 Sep 1997 | Flood | — | — | — | — | — | County |
| 22 Jun 1997 | Flash Flood | — | — | — | — | — | County |
| 1 May 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Boone County had?
91 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 Boone County?
8 Jun 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Boone County?
The flash flood of 26 Mar 2004, with property damage estimated by NCEI at $500K.
How does Boone County compare with Missouri for flood?
13.3 events per 100 square miles against 15.7 statewide; the county holds 91 of the state's 10,821 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.