Natural disaster risk in Dimmit County, Texas
Texas · population 8,588 · FIPS 48127
Overall: very low risk
Dimmit County has a composite risk score of 35.9 out of 100 — higher than 35% of US counties. It ranks 156 of 254 in Texas (1 = highest risk). Its highest-rated hazards are heat wave, drought, hurricane.
Drought now: Yes: D3 Extreme Drought, 2 weeks
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 52.24% of Dimmit County is in D3 Extreme Drought. Some of it has been at D3 or worse for 2 weeks in a row. In all, 100% of the county is in drought (D1 to D4).
Drought in Dimmit County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Very low 35.9 |
| Expected annual loss About $6.3 million a year, on average, across all 18 hazards. |
Very low 18.7 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Very high 99.6 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Very low 5.9 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Dimmit County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Heat wave | Relatively moderate 94 |
| Drought | Relatively moderate 80 |
| Hurricane | Relatively low 61 |
| Cold wave | Relatively low 51 |
| Lightning | Relatively low 39 |
| Tornado | Relatively low 28 |
| Wildfire | Very low 54 |
| Ice storm | Very low 26 |
| Hail | Very low 22 |
| Inland (riverine) flooding | Very low 19 |
| Winter weather | Very low 13 |
| Earthquake | Very low 8 |
| Strong wind | Very low 6 |
| Landslide | Very low 5 |
| Avalanche | Not applicable |
| Coastal flooding | Not applicable |
| Tsunami | Not applicable |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Dimmit County
Federal declarations that designated Dimmit County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Dimmit County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4935-TX (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding), declared 1 Sep 2026.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4935-TX | Major disaster | Severe Storms, Straight-Line Winds, Tornadoes, and Flooding | 1 Sep 2026 | No |
| EM-3649-TX | Emergency | Flooding | 18 Jul 2026 | No |
All FEMA declarations in Texas, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in Dimmit County, Texas?
FEMA's National Risk Index rates the overall risk in Dimmit County as very low, with a score of 35.9 out of 100 (higher than 35% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Dimmit County?
The hazards rated highest for Dimmit County are heat wave (relatively moderate), drought (relatively moderate), hurricane (relatively low).
What is the flood risk in Dimmit County?
FEMA rates inland (river and rain) flooding risk in Dimmit County as very low. For a specific property, check the FEMA flood map and your local floodplain office.
Has Dimmit County had a FEMA disaster declaration?
Yes. Dimmit County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4935-TX (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding), declared 1 Sep 2026.
Is Dimmit County in a drought?
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 52.24% of Dimmit County is in D3 Extreme Drought. Some of it has been at D3 or worse for 2 weeks in a row. In all, 100% of the county is in drought (D1 to D4).
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