States › Missouri › Polk County › Flood
Flood in Polk County, Missouri
222 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.
Polk County, Missouri, has 222 flood events in the NCEI record since 1950, with at least one in 29 different years.
May is the busiest month, with 46 of the recorded events. The last 20 years account for 197 events against 25 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 2.1% of the 10,821 flood events recorded in Missouri; its 34.9 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 | Polk County | Missouri | US |
|---|---|---|---|
| Flood events since 1950 | 222 | 10,821 | 183,559 |
| Per 100 square miles | 34.9 | 15.7 | 5.2 |
| Per 10,000 residents | 69.3 | 17.5 | 5.5 |
| Deaths recorded | 1 | 159 | 2,961 |
| Busiest month | May | May | June |
By year
Seasonality
14Feb
6Mar
19Apr
29May
46Jun
42Jul
25Aug
14Sep
10Oct
7Nov
6Dec
4
Recorded events
The 192 events kept for this page are the 120 most recent plus the 80 with the most damage, deaths or injuries out of 222. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 26 Jun 2026 | Flood | — | — | — | — | — | County |
| 25 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2026 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 20 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 20 Apr 2025 | Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2024 | Flash Flood | — | $2.2M | — | — | — | County |
| 9 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 31 May 2024 | Flash Flood | — | — | — | — | — | County |
| 31 May 2024 | Flash Flood | — | — | — | — | — | County |
| 31 May 2024 | Flash Flood | — | — | — | — | — | County |
| 3 Mar 2023 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flash Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flash Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 5 May 2022 | Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | $60K | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 17 May 2021 | Flash Flood | — | — | — | — | — | County |
| 17 May 2021 | Flash Flood | — | — | — | — | — | County |
| 13 Mar 2021 | Flood | — | — | — | — | — | County |
| 13 Mar 2021 | Flood | — | — | — | — | — | County |
| 13 Mar 2021 | Flood | — | — | — | — | — | County |
| 25 Jan 2021 | Flood | — | — | — | — | — | County |
| 17 Jul 2020 | Flash Flood | — | — | — | — | — | County |
| 25 Apr 2020 | Flood | — | — | — | — | — | County |
| 25 Apr 2020 | Flood | — | — | — | — | — | County |
| 19 Mar 2020 | Flash Flood | — | — | — | — | — | County |
| 11 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 11 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 11 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 10 Jan 2020 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 20 May 2019 | Flash Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flash Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flash Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flash Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flood | — | — | — | — | — | County |
| 12 Mar 2019 | Flood | — | — | — | — | — | County |
| 7 Feb 2019 | Flood | — | — | — | — | — | County |
| 7 Feb 2019 | Flood | — | — | — | — | — | County |
| 31 Dec 2018 | Flood | — | — | — | — | — | County |
| 24 Feb 2018 | Flood | — | — | — | — | — | County |
| 20 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 3 May 2017 | Flash Flood | — | — | — | — | — | County |
| 3 May 2017 | Flash Flood | — | — | — | — | — | County |
| 3 May 2017 | Flash Flood | — | — | — | — | — | County |
| 3 May 2017 | Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flash Flood | — | $100K | — | — | — | County |
| 22 Apr 2017 | Flood | — | $10K | — | — | — | County |
| 25 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 4 Jul 2016 | Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | $500K | — | 1 | — | County |
| 17 Nov 2015 | Flash Flood | — | — | — | — | — | County |
| 17 Nov 2015 | Flood | — | — | — | — | — | County |
| 17 Nov 2015 | Flood | — | — | — | — | — | County |
| 2 Jul 2015 | Flood | — | — | — | — | — | County |
| 1 Jul 2015 | Flash Flood | — | $100K | — | — | — | County |
| 1 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 18 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2015 | Flash Flood | — | $100K | — | — | — | County |
| 16 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 29 May 2015 | Flood | — | — | — | — | — | County |
| 29 May 2015 | Flood | — | — | — | — | — | County |
| 17 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 17 Sep 2014 | Flash Flood | — | $50K | — | — | — | County |
| 10 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 3 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 25 Apr 2011 | Flash Flood | — | $250K | — | — | — | County |
| 12 May 2010 | Flash Flood | — | — | — | — | — | County |
| 12 May 2010 | Flash Flood | — | — | — | — | — | County |
| 26 Mar 2010 | Flood | — | — | — | — | — | County |
| 25 Mar 2010 | Flood | — | — | — | — | — | County |
| 25 Mar 2010 | Flood | — | — | — | — | — | County |
| 24 Jan 2010 | Flood | — | — | — | — | — | County |
| 15 Nov 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flood | — | — | — | — | — | County |
| 29 Oct 2009 | Flood | — | — | — | — | — | County |
| 8 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2009 | Flash Flood | — | — | — | — | — | County |
| 10 Jun 2009 | Flash Flood | — | — | — | — | — | County |
| 13 Sep 2008 | Flash Flood | — | — | — | — | — | County |
| 6 Aug 2008 | Flash Flood | — | $5K | — | — | — | County |
| 28 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 13 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2008 | Flash Flood | — | — | — | — | — | County |
| 2 Jun 2008 | Flash Flood | — | $75K | — | — | — | County |
| 7 May 2008 | Flash Flood | — | — | — | — | — | County |
| 22 Apr 2008 | Flash Flood | — | — | — | — | — | County |
| 10 Apr 2008 | Flash Flood | — | — | — | — | — | County |
| 3 Apr 2008 | Flash Flood | — | — | — | — | — | County |
| 19 Mar 2008 | Flood | — | — | — | — | — | County |
| 18 Mar 2008 | Flash Flood | — | $100K | — | — | — | County |
| 3 Mar 2008 | Flood | — | — | — | — | — | County |
| 17 Feb 2008 | Flash Flood | — | — | — | — | — | County |
| 5 Feb 2008 | Flash Flood | — | — | — | — | — | County |
| 7 Jan 2008 | Flash Flood | — | $50K | — | — | — | County |
| 8 Sep 2007 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2007 | Flash Flood | — | $9.0M | — | — | — | County |
| 9 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 1 Jun 2007 | Flash Flood | — | — | — | — | 1 | County |
| 1 Jun 2007 | Flood | — | — | — | — | — | County |
| 25 May 2007 | Flash Flood | — | $10K | — | — | — | County |
| 10 May 2007 | Flash Flood | — | — | — | — | — | County |
| 24 Apr 2007 | Flash Flood | — | — | — | — | — | County |
| 13 Apr 2007 | Flood | — | — | — | — | — | County |
| 9 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 7 Jun 2005 | Flash Flood | — | $50K | — | — | — | County |
| 6 Apr 2005 | Flash Flood | — | — | — | — | — | County |
| 12 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 12 Jan 2005 | Flash Flood | — | — | — | — | — | County |
| 5 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 5 Jan 2005 | Flash Flood | — | — | — | — | — | County |
| 1 Nov 2004 | Flash Flood | — | — | — | — | — | County |
| 12 May 2002 | Flood | — | $500K | — | — | — | Forecast zone |
| 12 May 2002 | Flash Flood | — | — | — | — | — | County |
| 8 May 2002 | Flood | — | $25K | — | — | — | Forecast zone |
| 10 Oct 2001 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2001 | Flash Flood | — | — | — | — | — | County |
| 20 May 2001 | Flash Flood | — | — | — | — | — | County |
| 20 Jul 2000 | Flash Flood | — | — | — | — | — | County |
| 12 Jul 2000 | Flash Flood | — | — | — | — | — | County |
| 4 May 1999 | Flash Flood | — | — | — | — | — | County |
| 5 Oct 1998 | Flash Flood | — | $450K | — | — | — | County |
| 19 Mar 1998 | Flash Flood | — | — | — | — | — | County |
| 17 Jul 1997 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 1997 | Flash Flood | — | — | — | — | — | County |
| 6 Nov 1996 | Flash Flood | — | — | — | — | — | County |
| 26 Sep 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Polk County had?
222 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 Polk County?
26 Jun 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Polk County?
The flash flood of 20 Aug 2007, with property damage estimated by NCEI at $9.0M.
How does Polk County compare with Missouri for flood?
34.9 events per 100 square miles against 15.7 statewide; the county holds 222 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.