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Flood in Warren County, Iowa
138 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 138 flood events in Warren County, Iowa, between 1950 and 2026, spread over 19 years.
June is the busiest month, with 36 of the recorded events. The last 20 years account for 103 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 7,383 flood events recorded in Iowa; its 24.2 per 100 square miles compares with 13.2 statewide.
Compared with Iowa
| Measure | Warren County | Iowa | US |
|---|---|---|---|
| Flood events since 1950 | 138 | 7,383 | 183,559 |
| Per 100 square miles | 24.2 | 13.2 | 5.2 |
| Per 10,000 residents | 25.8 | 23.1 | 5.5 |
| Deaths recorded | 0 | 18 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
0Feb
2Mar
20Apr
4May
26Jun
36Jul
33Aug
4Sep
9Oct
1Nov
0Dec
3
Recorded events
All 138 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 |
|---|---|---|---|---|---|---|---|
| 25 May 2019 | Flood | — | $100K | $50K | — | — | County |
| 15 Mar 2019 | Flood | — | — | — | — | — | County |
| 14 Mar 2019 | Flood | — | — | — | — | — | County |
| 14 Mar 2019 | Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | $50K | — | — | — | County |
| 13 Mar 2019 | Flood | — | — | — | — | — | County |
| 13 Mar 2019 | Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flood | — | — | — | — | — | County |
| 11 Mar 2019 | Flood | — | — | — | — | — | County |
| 25 Jun 2018 | Flash Flood | — | — | — | — | — | County |
| 19 Jul 2016 | Flash Flood | — | — | $50K | — | — | County |
| 19 Jul 2016 | Flash Flood | — | $10K | — | — | — | County |
| 19 Jul 2016 | Flash Flood | — | — | — | — | — | County |
| 14 Dec 2015 | Flood | — | $50K | — | — | — | County |
| 14 Dec 2015 | Flood | — | $50K | — | — | — | County |
| 14 Dec 2015 | Flood | — | $100K | — | — | — | County |
| 29 Jul 2015 | Flood | — | — | — | — | — | County |
| 28 Jul 2015 | Flood | — | $250K | $250K | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $500K | $500K | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $25K | $100K | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $50K | — | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $250K | $500K | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $50K | — | — | — | County |
| 28 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2015 | Flash Flood | — | $25K | — | — | — | County |
| 26 Jun 2015 | Flood | — | $100K | $100K | — | — | County |
| 25 Jun 2015 | Flash Flood | — | $20K | — | — | — | County |
| 25 Jun 2015 | Flood | — | $1.0M | $200K | — | — | County |
| 25 Jun 2015 | Flood | — | $250K | $250K | — | — | County |
| 25 Jun 2015 | Flood | — | $250K | $250K | — | — | County |
| 25 Jun 2015 | Flash Flood | — | $50K | — | — | — | County |
| 25 Jun 2015 | Flash Flood | — | $20K | — | — | — | County |
| 11 Sep 2014 | Flood | — | $100K | — | — | — | County |
| 10 Sep 2014 | Flash Flood | — | $50K | $50K | — | — | County |
| 10 Sep 2014 | Flash Flood | — | $50K | $50K | — | — | County |
| 10 Sep 2014 | Flood | — | $100K | $25K | — | — | County |
| 10 Sep 2014 | Flood | — | $50K | — | — | — | County |
| 10 Sep 2014 | Flood | — | $100K | — | — | — | County |
| 9 Sep 2014 | Flash Flood | — | $100K | $500K | — | — | County |
| 9 Sep 2014 | Flash Flood | — | $100K | $25K | — | — | County |
| 31 Aug 2014 | Flash Flood | — | $5K | — | — | — | County |
| 12 Jul 2014 | Flash Flood | — | $300K | — | — | — | County |
| 16 Jun 2013 | Flood | — | $10K | — | — | — | County |
| 20 Jun 2011 | Flood | — | $50K | $25K | — | — | County |
| 10 Jun 2011 | Flood | — | $200K | — | — | — | County |
| 10 Jun 2011 | Flash Flood | — | $100K | — | — | — | County |
| 10 Jun 2011 | Flood | — | $500K | $250K | — | — | County |
| 9 Jun 2011 | Flood | — | $300K | — | — | — | County |
| 30 May 2011 | Flood | — | $75K | — | — | — | County |
| 25 May 2011 | Flood | — | $100K | — | — | — | County |
| 4 Aug 2010 | Flood | — | $10K | $5K | — | — | County |
| 23 Jul 2010 | Flash Flood | — | $50K | — | — | — | County |
| 23 Jul 2010 | Flash Flood | — | $25K | — | — | — | County |
| 23 Jul 2010 | Flash Flood | — | $25K | — | — | — | County |
| 21 Jul 2010 | Flood | — | $10K | $25K | — | — | County |
| 19 Jul 2010 | Flood | — | $50K | $25K | — | — | County |
| 26 Jun 2010 | Flood | — | $50K | $500K | — | — | County |
| 14 Jun 2010 | Flood | — | $75K | — | — | — | County |
| 12 Jun 2010 | Flood | — | $100K | — | — | — | County |
| 12 Jun 2010 | Flood | — | — | $20M | — | — | County |
| 12 May 2010 | Flood | — | $15K | — | — | — | County |
| 12 May 2010 | Flood | — | $25K | — | — | — | County |
| 10 Mar 2010 | Flood | — | $50K | — | — | — | County |
| 10 Mar 2010 | Flood | — | $50K | — | — | — | County |
| 19 Jun 2009 | Flood | — | $2K | — | — | — | County |
| 19 Jun 2009 | Flood | — | $10K | $10K | — | — | County |
| 27 Apr 2009 | Flood | — | $10K | — | — | — | County |
| 26 Apr 2009 | Flood | — | $5K | — | — | — | County |
| 10 Mar 2009 | Flood | — | $25K | — | — | — | County |
| 8 Mar 2009 | Flood | — | $25K | — | — | — | County |
| 8 Mar 2009 | Flood | — | $25K | — | — | — | County |
| 28 Jul 2008 | Flood | — | $25K | $50K | — | — | County |
| 28 Jul 2008 | Flood | — | $25K | $50K | — | — | County |
| 28 Jul 2008 | Flood | — | $25K | $50K | — | — | County |
| 28 Jul 2008 | Flood | — | $50K | $10K | — | — | County |
| 28 Jul 2008 | Flash Flood | — | $25K | — | — | — | County |
| 28 Jul 2008 | Flash Flood | — | $10K | $5K | — | — | County |
| 8 Jul 2008 | Flash Flood | — | $20K | — | — | — | County |
| 8 Jul 2008 | Flood | — | $10K | $5K | — | — | County |
| 8 Jul 2008 | Flood | — | $10K | $5K | — | — | County |
| 8 Jul 2008 | Flood | — | $10K | $5K | — | — | County |
| 26 Jun 2008 | Flash Flood | — | $30K | — | — | — | County |
| 26 Jun 2008 | Flash Flood | — | $5K | — | — | — | County |
| 11 Jun 2008 | Flood | — | $10K | $50K | — | — | County |
| 5 Jun 2008 | Flood | — | $150K | $300K | — | — | County |
| 5 Jun 2008 | Flood | — | $100K | $500K | — | — | County |
| 5 Jun 2008 | Flood | — | $25K | $5K | — | — | County |
| 5 Jun 2008 | Flood | — | $25K | — | — | — | County |
| 5 Jun 2008 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2008 | Flash Flood | — | $10K | — | — | — | County |
| 5 Jun 2008 | Flash Flood | — | $5K | — | — | — | County |
| 3 Mar 2008 | Flood | — | $50K | — | — | — | County |
| 2 Mar 2008 | Flood | — | $30K | — | — | — | County |
| 2 Mar 2008 | Flood | — | $30K | — | — | — | County |
| 2 Mar 2008 | Flood | — | $50K | — | — | — | County |
| 2 Mar 2008 | Flood | — | $50K | — | — | — | County |
| 14 Oct 2007 | Flood | — | $25K | $50K | — | — | County |
| 7 Aug 2007 | Flash Flood | — | $5K | $25K | — | — | County |
| 7 May 2007 | Flood | — | $25K | — | — | — | County |
| 7 May 2007 | Flood | — | $25K | — | — | — | County |
| 6 May 2007 | Flood | — | $25K | — | — | — | County |
| 25 Apr 2007 | Flood | — | $10K | — | — | — | County |
| 24 Feb 2007 | Flood | — | $5K | — | — | — | County |
| 8 Sep 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 13 May 2005 | Flood | — | $30K | — | — | — | Forecast zone |
| 3 Aug 2004 | Flash Flood | — | $50K | $5K | — | — | County |
| 24 May 2004 | Flash Flood | — | $75K | $10K | — | — | County |
| 24 May 2004 | Flash Flood | — | $50K | $10K | — | — | County |
| 22 May 2004 | Flood | — | $100K | $298K | — | — | Forecast zone |
| 10 May 2004 | Flood | — | $15K | $5K | — | — | Forecast zone |
| 5 Jul 2003 | Flood | — | $10K | $25K | — | — | Forecast zone |
| 9 May 2003 | Flood | — | $5K | — | — | — | Forecast zone |
| 4 May 2003 | Flood | — | $5K | — | — | — | Forecast zone |
| 12 Jun 2001 | Flood | — | $25K | $50K | — | — | Forecast zone |
| 13 May 2001 | Flash Flood | — | $100K | $10K | — | — | County |
| 23 Mar 2001 | Flood | — | $8K | — | — | — | Forecast zone |
| 15 Mar 2001 | Flood | — | $5K | — | — | — | Forecast zone |
| 21 May 1999 | Flood | — | $50K | $10K | — | — | Forecast zone |
| 16 May 1999 | Flood | — | $200K | $25K | — | — | Forecast zone |
| 6 Apr 1999 | Flood | — | $7K | — | — | — | Forecast zone |
| 6 Jul 1998 | Flood | — | $50K | $100K | — | — | Forecast zone |
| 6 Jul 1998 | Flood | — | $25K | $5K | — | — | County |
| 18 Jun 1998 | Flood | — | $750K | $50K | — | — | Forecast zone |
| 18 Jun 1998 | Flood | — | $50K | — | — | — | County |
| 18 Jun 1998 | Flash Flood | — | $350K | $20K | — | — | County |
| 17 Jun 1998 | Flood | — | $30K | — | — | — | County |
| 14 Jun 1998 | Flood | — | $50K | $30K | — | — | County |
| 6 May 1998 | Flood | — | $50K | — | — | — | County |
| 24 Jul 1997 | Flood | — | $25K | $15K | — | — | County |
| 7 May 1997 | Flood | — | — | — | — | — | Forecast zone |
| 7 May 1997 | Flood | — | $40K | — | — | — | County |
| 18 Feb 1997 | Flood | — | — | — | — | — | Forecast zone |
| 17 Jul 1996 | Flood | — | $15K | — | — | — | County |
| 26 May 1996 | Flood | — | — | — | — | — | Forecast zone |
| 23 May 1996 | Flood | — | — | — | — | — | Forecast zone |
| 10 May 1996 | Flood | — | — | — | — | — | Forecast zone |
| 9 May 1996 | Flood | — | $100K | — | — | — | County |
| 9 May 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Warren County had?
138 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 Warren County?
25 May 2019 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Warren County?
The flood of 12 Jun 2010, with property damage estimated by NCEI at $0 and crop damage at $20M.
How does Warren County compare with Iowa for flood?
24.2 events per 100 square miles against 13.2 statewide; the county holds 138 of the state's 7,383 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.