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Flood in Dimmit County, Texas
53 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.
Dimmit County, Texas, has 53 flood events in the NCEI record since 1950, with at least one in 18 different years.
July is the busiest month, with 12 of the recorded events. The last 20 years account for 25 events against 28 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.3% of the 15,832 flood events recorded in Texas; its 4.0 per 100 square miles compares with 6.1 statewide.
Compared with Texas
| Measure | Dimmit County | Texas | US |
|---|---|---|---|
| Flood events since 1950 | 53 | 15,832 | 183,559 |
| Per 100 square miles | 4.0 | 6.1 | 5.2 |
| Per 10,000 residents | 62.6 | 5.4 | 5.5 |
| Deaths recorded | 0 | 595 | 2,961 |
| Busiest month | July | May | June |
By year
Seasonality
0Feb
0Mar
2Apr
3May
10Jun
7Jul
12Aug
3Sep
5Oct
10Nov
1Dec
0
Recorded events
All 53 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 |
|---|---|---|---|---|---|---|---|
| 3 Sep 2024 | Flash Flood | — | — | — | — | — | County |
| 11 May 2021 | Flood | — | — | — | — | — | County |
| 11 May 2021 | Flood | — | — | — | — | — | County |
| 27 Sep 2017 | Flood | — | — | — | — | — | County |
| 26 Sep 2017 | Flash Flood | — | — | — | — | — | County |
| 9 Oct 2015 | Flash Flood | — | — | — | — | — | County |
| 21 May 2015 | Flash Flood | — | — | — | — | — | County |
| 21 May 2015 | Flash Flood | — | — | — | — | — | County |
| 15 May 2015 | Flash Flood | — | — | — | — | — | County |
| 13 Oct 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Oct 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Oct 2013 | Flash Flood | — | — | — | — | — | County |
| 14 Jun 2013 | Flash Flood | — | — | — | — | — | County |
| 15 Apr 2010 | Flash Flood | — | — | — | — | — | County |
| 21 Oct 2009 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 24 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 23 Jul 2007 | Flood | — | — | — | — | — | County |
| 20 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 7 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 6 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 5 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 25 May 2007 | Flash Flood | — | — | — | — | — | County |
| 9 May 2007 | Flash Flood | — | — | — | — | — | County |
| 7 May 2007 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2006 | Flash Flood | — | — | — | — | — | County |
| 2 May 2006 | Flash Flood | — | — | — | — | — | County |
| 11 Oct 2005 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2004 | Flood | — | — | — | — | — | Forecast zone |
| 29 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 25 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 11 May 2004 | Flash Flood | — | — | — | — | — | County |
| 7 Apr 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Apr 2004 | Flash Flood | — | — | — | — | — | County |
| 29 Mar 2004 | Flash Flood | — | $3K | — | — | — | County |
| 12 Oct 2003 | Flash Flood | — | $30K | — | — | — | County |
| 27 Oct 2002 | Flood | — | — | — | — | — | Forecast zone |
| 24 Oct 2002 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2002 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 15 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 3 Jul 2002 | Flood | — | — | — | — | — | Forecast zone |
| 2 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2002 | Flash Flood | — | — | — | — | — | County |
| 19 Nov 2001 | Flood | — | — | — | — | — | Forecast zone |
| 24 Aug 1999 | Flash Flood | — | $20K | — | — | — | County |
| 16 Sep 1998 | Flash Flood | — | $5K | $10K | — | — | County |
| 6 Aug 1998 | Flash Flood | — | $3K | — | — | — | County |
| 16 Mar 1998 | Flash Flood | — | $3K | — | — | — | County |
| 15 Jun 1997 | Flash Flood | — | $10K | — | — | — | County |
| 29 Oct 1996 | Flood | — | $5.0M | $15M | — | — | Forecast zone |
| 1 Jun 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Dimmit County had?
53 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 Dimmit County?
3 Sep 2024 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Dimmit County?
The flood of 29 Oct 1996, with property damage estimated by NCEI at $5.0M and crop damage at $15M.
How does Dimmit County compare with Texas for flood?
4.0 events per 100 square miles against 6.1 statewide; the county holds 53 of the state's 15,832 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.