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Flood in Osage County, Oklahoma
84 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 84 flood events in Osage County, Oklahoma, between 1950 and 2026, spread over 23 years.
May is the busiest month, with 28 of the recorded events. The last 20 years account for 49 events against 35 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.9% of the 4,346 flood events recorded in Oklahoma; its 3.7 per 100 square miles compares with 6.3 statewide.
Compared with Oklahoma
| Measure | Osage County | Oklahoma | US |
|---|---|---|---|
| Flood events since 1950 | 84 | 4,346 | 183,559 |
| Per 100 square miles | 3.7 | 6.3 | 5.2 |
| Per 10,000 residents | 18.4 | 10.9 | 5.5 |
| Deaths recorded | 0 | 91 | 2,961 |
| Busiest month | May | May | June |
By year
Seasonality
1Feb
1Mar
6Apr
11May
28Jun
17Jul
10Aug
1Sep
2Oct
4Nov
3Dec
0
Recorded events
All 84 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 |
|---|---|---|---|---|---|---|---|
| 29 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 27 May 2021 | Flash Flood | — | — | — | — | — | County |
| 27 May 2021 | Flash Flood | — | — | — | — | — | County |
| 13 Mar 2021 | Flood | — | — | — | — | — | County |
| 6 Jun 2019 | Flash Flood | — | — | — | — | — | County |
| 23 May 2019 | Flood | — | — | — | — | — | County |
| 22 May 2019 | Flash Flood | — | — | — | — | — | County |
| 22 May 2019 | Flood | — | — | — | — | — | County |
| 22 May 2019 | Flash Flood | — | — | — | — | — | County |
| 21 May 2019 | Flash Flood | — | $100K | — | — | — | County |
| 21 May 2019 | Flash Flood | — | — | — | — | — | County |
| 21 May 2019 | Flood | — | $150K | — | — | — | County |
| 20 May 2019 | Flood | — | — | — | — | — | County |
| 20 May 2019 | Flash Flood | — | $75K | — | — | — | County |
| 20 May 2019 | Flash Flood | — | — | — | — | — | County |
| 20 May 2019 | Flash Flood | — | $50K | — | — | — | County |
| 20 May 2019 | Flash Flood | — | $500K | — | — | — | County |
| 4 Oct 2017 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flood | — | — | — | — | — | County |
| 23 May 2015 | Flash Flood | — | — | — | — | — | County |
| 2 Jun 2014 | Flash Flood | — | $2K | — | — | — | County |
| 21 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 30 May 2013 | Flash Flood | — | $25K | — | — | — | County |
| 4 Jun 2012 | Flash Flood | — | $20K | — | — | — | County |
| 30 Apr 2012 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2012 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2012 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 8 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 10 Feb 2009 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2008 | Flood | — | — | — | — | — | County |
| 9 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 27 May 2008 | Flash Flood | — | — | — | — | — | County |
| 7 May 2008 | Flash Flood | — | — | — | — | — | County |
| 10 Apr 2008 | Flood | — | — | — | — | — | County |
| 31 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 31 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 29 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 7 May 2007 | Flood | — | — | — | — | — | County |
| 26 May 2006 | Flash Flood | — | — | — | — | — | County |
| 5 Jan 2005 | Flash Flood | — | — | — | — | — | County |
| 4 Mar 2004 | Flash Flood | — | — | — | — | — | County |
| 4 Mar 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Mar 2004 | Flash Flood | — | — | — | — | — | County |
| 5 Jun 2003 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2002 | Flash Flood | — | — | — | — | — | County |
| 16 May 2002 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 9 May 2000 | Flood | — | — | — | — | — | Forecast zone |
| 8 May 2000 | Flash Flood | — | $12K | — | — | — | County |
| 6 May 2000 | Flash Flood | — | $100K | — | — | — | County |
| 6 May 2000 | Flood | — | — | — | — | — | Forecast zone |
| 12 Sep 1999 | Flash Flood | — | — | — | — | — | County |
| 22 May 1999 | Flood | — | — | — | — | — | County |
| 26 Apr 1999 | Flash Flood | — | — | — | — | — | County |
| 25 Apr 1999 | Flash Flood | — | $30K | — | — | — | County |
| 25 Apr 1999 | Flood | — | — | — | — | — | Forecast zone |
| 2 Nov 1998 | Flood | — | — | — | — | — | Forecast zone |
| 4 Oct 1998 | Flash Flood | — | — | — | — | — | County |
| 2 Oct 1998 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 24 May 1998 | Flash Flood | — | — | — | — | — | County |
| 27 Apr 1998 | Flash Flood | — | — | — | — | — | County |
| 19 Jul 1997 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 1997 | Flash Flood | — | $140K | — | — | — | County |
| 17 Jul 1997 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 1997 | Flash Flood | — | — | — | — | — | County |
| 7 May 1997 | Flash Flood | — | — | — | — | — | County |
| 11 Apr 1997 | Flash Flood | — | — | — | — | — | County |
| 16 Nov 1996 | Flash Flood | — | — | — | — | — | County |
| 16 Nov 1996 | Flash Flood | — | — | — | — | — | County |
| 26 Sep 1996 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 1996 | Flash Flood | — | $10K | — | — | 1 | County |
Questions and answers
How many flood events has Osage County had?
84 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?
29 Apr 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Osage County?
The flash flood of 20 May 2019, with property damage estimated by NCEI at $500K.
How does Osage County compare with Oklahoma for flood?
3.7 events per 100 square miles against 6.3 statewide; the county holds 84 of the state's 4,346 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.