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Flood in Pinal County, Arizona
157 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 157 flood events in Pinal County, Arizona, between 1950 and 2026, spread over 29 years.
August is the busiest month, with 58 of the recorded events. The last 20 years account for 128 events against 29 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 4% of the 3,896 flood events recorded in Arizona; its 2.9 per 100 square miles compares with 3.4 statewide.
NCEI attributes 5 deaths in the county to floods and flash floods.
Compared with Arizona
| Measure | Pinal County | Arizona | US |
|---|---|---|---|
| Flood events since 1950 | 157 | 3,896 | 183,559 |
| Per 100 square miles | 2.9 | 3.4 | 5.2 |
| Per 10,000 residents | 3.5 | 5.4 | 5.5 |
| Deaths recorded | 5 | 127 | 2,961 |
| Busiest month | August | August | June |
By year
Seasonality
5Feb
2Mar
1Apr
0May
1Jun
1Jul
47Aug
58Sep
21Oct
17Nov
2Dec
2
Recorded events
All 157 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 |
|---|---|---|---|---|---|---|---|
| 14 Oct 2025 | Flood | — | $500 | — | — | — | County |
| 13 Oct 2025 | Flash Flood | — | $20K | — | — | — | County |
| 13 Oct 2025 | Flash Flood | — | $500 | — | — | — | County |
| 12 Oct 2025 | Flash Flood | — | — | — | — | — | County |
| 12 Oct 2025 | Flood | — | $20K | — | — | — | County |
| 12 Oct 2025 | Flash Flood | — | $300K | — | — | — | County |
| 26 Sep 2025 | Flash Flood | — | $20K | — | — | — | County |
| 26 Sep 2025 | Flash Flood | — | — | — | — | — | County |
| 26 Sep 2025 | Flash Flood | — | $20K | — | — | — | County |
| 25 Aug 2025 | Flash Flood | — | $1K | — | — | — | County |
| 15 Aug 2025 | Flood | — | — | — | — | — | County |
| 25 Jul 2024 | Flash Flood | — | — | — | — | — | County |
| 23 Jan 2024 | Flood | — | $500 | — | — | — | County |
| 23 Jan 2024 | Flood | — | $500 | — | — | — | County |
| 23 Jan 2024 | Flood | — | — | — | — | — | County |
| 13 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 31 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 1 Jan 2023 | Flash Flood | — | — | — | — | — | County |
| 4 Dec 2022 | Flood | — | $10K | — | — | — | County |
| 15 Oct 2022 | Flash Flood | — | — | — | — | — | County |
| 15 Oct 2022 | Flash Flood | — | — | — | — | — | County |
| 3 Oct 2022 | Flash Flood | — | — | — | — | — | County |
| 21 Sep 2022 | Flash Flood | — | $10K | — | — | — | County |
| 21 Sep 2022 | Flash Flood | — | — | — | — | — | County |
| 11 Sep 2022 | Flash Flood | — | — | — | — | — | County |
| 27 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 30 Jul 2022 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2022 | Flash Flood | — | $1.0M | — | — | — | County |
| 28 Jul 2022 | Flash Flood | — | $25K | — | — | — | County |
| 26 Jun 2022 | Flash Flood | — | — | — | — | — | County |
| 18 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2021 | Flash Flood | — | $500K | — | — | — | County |
| 17 Aug 2021 | Flood | — | $25K | — | — | — | County |
| 17 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 16 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 14 Aug 2021 | Flash Flood | — | $500 | — | — | — | County |
| 14 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2021 | Flash Flood | — | — | — | — | — | County |
| 25 Jul 2021 | Flash Flood | — | $50K | — | — | — | County |
| 25 Jul 2021 | Flood | — | $7.5M | — | — | — | County |
| 25 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 25 Jul 2021 | Flood | — | $10K | — | — | — | County |
| 25 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 25 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2021 | Flood | — | $500K | — | — | — | County |
| 22 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 22 Jul 2021 | Flash Flood | — | $750K | — | — | — | County |
| 22 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 14 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 14 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 29 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 19 Nov 2019 | Flash Flood | — | — | — | — | — | County |
| 23 Sep 2019 | Flash Flood | — | $40K | — | — | — | County |
| 16 Sep 2019 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2019 | Flash Flood | — | — | — | — | — | County |
| 30 Jul 2019 | Flash Flood | — | $5K | — | — | — | County |
| 21 Feb 2019 | Flood | — | $2K | — | — | — | County |
| 13 Oct 2018 | Flash Flood | — | $2K | — | — | — | County |
| 13 Oct 2018 | Flash Flood | — | $2K | — | — | — | County |
| 13 Oct 2018 | Flash Flood | — | — | — | — | — | County |
| 2 Oct 2018 | Flash Flood | — | $10K | — | — | — | County |
| 2 Oct 2018 | Flash Flood | — | $10K | — | — | — | County |
| 2 Oct 2018 | Flood | — | $250K | — | — | — | County |
| 2 Oct 2018 | Flash Flood | — | $5K | — | — | — | County |
| 24 Aug 2018 | Flash Flood | — | $20K | — | — | — | County |
| 23 Aug 2018 | Flash Flood | — | $25K | — | — | — | County |
| 30 Jul 2018 | Flash Flood | — | $5K | — | — | — | County |
| 30 Jul 2018 | Flash Flood | — | $10K | — | — | — | County |
| 11 Jul 2018 | Flash Flood | — | $3K | — | — | — | County |
| 11 Jul 2018 | Flash Flood | — | $5K | — | — | — | County |
| 10 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2018 | Flash Flood | — | — | — | — | — | County |
| 8 Sep 2017 | Flash Flood | — | $3K | — | — | — | County |
| 26 Aug 2017 | Flash Flood | — | $10K | — | — | — | County |
| 13 Aug 2017 | Flash Flood | — | — | — | — | — | County |
| 3 Aug 2017 | Flash Flood | — | $5K | — | — | — | County |
| 2 Aug 2017 | Flash Flood | — | $20K | — | — | — | County |
| 24 Jul 2017 | Flash Flood | — | $10K | — | — | — | County |
| 24 Jul 2017 | Flash Flood | — | $20K | — | — | — | County |
| 24 Jul 2017 | Flood | — | — | — | — | — | County |
| 23 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 11 Aug 2016 | Flash Flood | — | $40K | — | — | — | County |
| 11 Aug 2016 | Flood | — | $100K | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | $6K | — | — | — | County |
| 10 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 9 Aug 2016 | Flood | — | $10K | — | — | — | County |
| 9 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 3 Aug 2016 | Flash Flood | — | $2K | — | — | — | County |
| 2 Aug 2016 | Flood | — | — | — | — | — | County |
| 29 Jul 2015 | Flash Flood | — | $225K | — | — | — | County |
| 5 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 9 Oct 2014 | Flood | — | $25K | — | — | — | County |
| 27 Sep 2014 | Flood | — | — | — | — | — | County |
| 20 Sep 2014 | Flood | — | $30K | — | — | — | County |
| 8 Sep 2014 | Flash Flood | — | $20K | — | 1 | — | County |
| 8 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2014 | Flash Flood | — | $3K | — | — | — | County |
| 8 Jul 2014 | Flash Flood | — | — | — | — | — | County |
| 1 Mar 2014 | Flood | — | — | — | — | — | County |
| 9 Sep 2013 | Flash Flood | — | $25K | — | — | — | County |
| 26 Aug 2013 | Flash Flood | — | $5K | — | — | — | County |
| 21 Jul 2013 | Flash Flood | — | $300K | — | — | — | County |
| 21 Jul 2013 | Flash Flood | — | $350K | — | — | — | County |
| 21 Jul 2013 | Flash Flood | — | — | — | — | — | County |
| 7 Sep 2012 | Flash Flood | — | $100K | — | — | — | County |
| 14 Aug 2012 | Flash Flood | — | $40K | — | — | — | County |
| 29 Jul 2012 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2012 | Flash Flood | — | — | — | 1 | — | County |
| 4 Jul 2012 | Flash Flood | — | — | — | — | — | County |
| 9 Sep 2011 | Flash Flood | — | $5K | — | — | — | County |
| 18 Aug 2011 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2010 | Flash Flood | — | $50K | — | — | — | County |
| 31 Jul 2010 | Flash Flood | — | $50K | — | — | 2 | County |
| 21 Jul 2010 | Flash Flood | — | $1K | — | — | — | County |
| 21 Jan 2010 | Flash Flood | — | $300K | — | — | — | County |
| 3 Sep 2009 | Flash Flood | — | $10K | — | — | — | County |
| 14 Jul 2008 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 2008 | Flash Flood | — | $500K | — | — | — | County |
| 6 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 28 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 21 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 9 Sep 2006 | Flash Flood | — | — | — | 2 | — | County |
| 14 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2006 | Flood | — | $250K | — | — | — | County |
| 1 Aug 2006 | Flood | — | $300K | — | — | — | County |
| 1 Sep 2005 | Flash Flood | — | — | — | — | — | County |
| 9 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 12 Feb 2005 | Flash Flood | — | — | — | — | — | County |
| 29 Dec 2004 | Flash Flood | — | — | — | — | — | County |
| 18 Sep 2004 | Flash Flood | — | $2.0M | — | — | — | County |
| 25 Aug 2003 | Flash Flood | — | $50K | — | — | — | County |
| 14 Aug 2003 | Flash Flood | — | $50K | — | 1 | — | County |
| 1 Aug 2003 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2001 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2001 | Flood | — | — | — | — | — | County |
| 4 Aug 2001 | Flash Flood | — | — | — | — | — | County |
| 6 Nov 2000 | Flood | — | — | — | — | — | County |
| 29 Jul 1999 | Flash Flood | — | — | — | — | — | County |
| 14 Jul 1999 | Flash Flood | — | — | — | — | — | County |
| 24 Aug 1998 | Flood | — | — | — | — | — | County |
| 22 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 22 Jul 1998 | Flash Flood | — | — | — | — | — | County |
| 30 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 8 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 1997 | Flash Flood | — | — | — | — | — | County |
| 19 May 1997 | Flash Flood | — | — | — | — | — | County |
| 29 Aug 1996 | Flash Flood | — | — | — | — | — | County |
| 27 Aug 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Pinal County had?
157 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 Pinal County?
14 Oct 2025 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Pinal County?
The flood of 25 Jul 2021, with property damage estimated by NCEI at $7.5M.
How does Pinal County compare with Arizona for flood?
2.9 events per 100 square miles against 3.4 statewide; the county holds 157 of the state's 3,896 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.