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Flood in Osage County, Missouri
41 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 41 flood events in Osage County, Missouri, between 1950 and 2026, spread over 18 years.
May is the busiest month, with 9 of the recorded events. The last 20 years account for 27 events against 14 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.4% of the 10,821 flood events recorded in Missouri; its 6.8 per 100 square miles compares with 15.7 statewide.
Compared with Missouri
| Measure | Osage County | Missouri | US |
|---|---|---|---|
| Flood events since 1950 | 41 | 10,821 | 183,559 |
| Per 100 square miles | 6.8 | 15.7 | 5.2 |
| Per 10,000 residents | 30.6 | 17.5 | 5.5 |
| Deaths recorded | 0 | 159 | 2,961 |
| Busiest month | May | May | June |
By year
Seasonality
1Feb
0Mar
4Apr
3May
9Jun
4Jul
6Aug
9Sep
1Oct
1Nov
1Dec
2
Recorded events
All 41 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 |
|---|---|---|---|---|---|---|---|
| 4 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 2 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 2 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 22 Jun 2019 | Flash Flood | — | — | — | — | — | County |
| 29 Aug 2018 | Flash Flood | — | — | — | — | — | County |
| 1 May 2017 | Flood | — | — | — | — | — | County |
| 30 Apr 2017 | Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 5 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 27 Dec 2015 | Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 14 Apr 2012 | Flash Flood | — | — | — | — | — | County |
| 17 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 15 Mar 2012 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2010 | Flash Flood | — | — | — | — | — | County |
| 8 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 5 Jun 2010 | Flood | — | — | — | — | — | County |
| 15 Nov 2009 | Flash Flood | — | — | — | — | — | County |
| 8 May 2009 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2008 | Flood | — | — | — | — | — | County |
| 31 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 19 Mar 2008 | Flood | — | — | — | — | — | County |
| 8 May 2007 | Flood | — | $5K | $25K | — | — | County |
| 26 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2002 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2002 | Flash Flood | — | — | — | — | — | County |
| 12 May 2002 | Flash Flood | — | — | — | — | — | County |
| 9 May 2002 | Flash Flood | — | — | — | — | — | County |
| 8 May 2002 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jun 2001 | Flood | — | — | — | — | — | Forecast zone |
| 27 May 2000 | Flash Flood | — | — | — | — | — | County |
| 6 Oct 1998 | Flood | — | — | — | — | — | Forecast zone |
| 29 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 26 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 6 May 1996 | Flash Flood | — | — | — | — | — | County |
| 1 May 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Osage County had?
41 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 Osage County?
4 Aug 2023 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Osage County?
The flood of 8 May 2007, with property damage estimated by NCEI at $5K and crop damage at $25K.
How does Osage County compare with Missouri for flood?
6.8 events per 100 square miles against 15.7 statewide; the county holds 41 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.