Natural disaster risk in Unicoi County, Tennessee
Tennessee · population 17,924 · FIPS 47171
Overall: very low risk
Unicoi County has a composite risk score of 10.6 out of 100 — higher than 10% of US counties. It ranks 91 of 95 in Tennessee (1 = highest risk). Its highest-rated hazards are landslide, lightning, cold wave.
Drought now: No, but abnormally dry (D0)
No drought, but abnormally dry. On the U.S. Drought Monitor map valid 13 October 2026, 100% of Unicoi County is D0 Abnormally Dry and none of it is in drought (D1 to D4). Some of it has been abnormally dry or worse for 5 weeks in a row.
Drought in Unicoi 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 10.6 |
| Expected annual loss About $4.4 million a year, on average, across all 18 hazards. |
Very low 10.4 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Relatively moderate 54.7 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Relatively low 24.6 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Unicoi County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Landslide | Relatively low 83 |
| Lightning | Relatively low 47 |
| Cold wave | Relatively low 43 |
| Strong wind | Relatively low 31 |
| Ice storm | Relatively low 28 |
| Earthquake | Very low 43 |
| Hurricane | Very low 34 |
| Wildfire | Very low 32 |
| Inland (riverine) flooding | Very low 27 |
| Winter weather | Very low 19 |
| Tornado | Very low 17 |
| Hail | Very low 7 |
| Heat wave | Very low 1 |
| Avalanche | Not applicable |
| Coastal flooding | Not applicable |
| Drought | No rating |
| Tsunami | Not applicable |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Unicoi County
Federal declarations that designated Unicoi County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Unicoi County has been named in 5 FEMA declarations since 1 Jan 2024. The latest is DR-4898-TN (Severe Winter Storm), declared 6 Feb 2026.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4898-TN | Major disaster | Severe Winter Storm | 6 Feb 2026 | No |
| EM-3635-TN | Emergency | Severe Winter Storm | 24 Jan 2026 | No |
| EM-3625-TN | Emergency | Severe Storms, Straight-Line Winds, Tornadoes, and Flooding | 2 Apr 2025 | No |
| DR-4832-TN | Major disaster | Tropical Storm Helene | 2 Oct 2024 | Yes |
| EM-3620-TN | Emergency | Tropical Storm Helene | 27 Sep 2024 | No |
All FEMA declarations in Tennessee, 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 Unicoi County, Tennessee?
FEMA's National Risk Index rates the overall risk in Unicoi County as very low, with a score of 10.6 out of 100 (higher than 10% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Unicoi County?
The hazards rated highest for Unicoi County are landslide (relatively low), lightning (relatively low), cold wave (relatively low).
What is the flood risk in Unicoi County?
FEMA rates inland (river and rain) flooding risk in Unicoi County as very low. For a specific property, check the FEMA flood map and your local floodplain office.
Has Unicoi County had a FEMA disaster declaration?
Yes. Unicoi County has been named in 5 FEMA declarations since 1 Jan 2024. The latest is DR-4898-TN (Severe Winter Storm), declared 6 Feb 2026.
Is Unicoi County in a drought?
No drought, but abnormally dry. On the U.S. Drought Monitor map valid 13 October 2026, 100% of Unicoi County is D0 Abnormally Dry and none of it is in drought (D1 to D4). Some of it has been abnormally dry or worse for 5 weeks in a row.
Every county in Tennessee, ranked · All states · Disasters near me