Sweetwater County, Wyoming: hazard risk
FEMA rates Sweetwater County's overall risk Very Low (score 30.6 of 100, higher than 30% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by winter weather. Its storm record holds 864 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Winter Weather | Relatively High | 85.6 | $339K |
| Landslide | Relatively Moderate | 90.6 | $71K |
| Wildfire | Relatively Low | 66.2 | $151K |
| Earthquake | Relatively Low | 65.6 | $728K |
| Cold Wave | Relatively Low | 58.2 | $1.5M |
| Lightning | Relatively Low | 55.9 | $337K |
| Riverine Flooding | Relatively Low | 52.4 | $8.2M |
| Drought | Very Low | 19.6 | $4K |
| Ice Storm | Very Low | 16.1 | $13K |
| Hail | Very Low | 14.4 | $56K |
| Avalanche | Very Low | 12.6 | $14 |
| Strong Wind | Very Low | 10.2 | $87K |
| Tornado | Very Low | 9.4 | $66K |
| Heat Wave | No Rating | 0.0 | $0 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| High wind and dust storms | 382 | 1 | $171K | 13th of 23 | 1491st of 3,080 |
| Winter storms | 226 | 0 | $46K | 23rd of 23 | 2824th of 3,077 |
| Severe thunderstorm wind | 124 | 0 | $81K | 20th of 23 | 2857th of 3,080 |
| Extreme cold | 33 | 0 | – | 21st of 23 | 2726th of 3,076 |
| Tornadoes | 26 | 0 | $202K | 17th of 23 | 2801st of 3,080 |
| Heat | 16 | 0 | – | 11th of 23 | 2404th of 3,076 |
| Hail | 13 | 0 | $963K | 23rd of 23 | 3009th of 3,080 |
| Floods | 12 | 0 | $1.5M | 21st of 23 | 3046th of 3,080 |
| Wildfires | 8 | 0 | $428K | 17th of 23 | 1189th of 2,972 |
| Landslides and avalanches | 1 | 0 | – | 15th of 23 | 443rd of 2,278 |
| Lightning | 1 | 0 | – | 19th of 23 | 2423rd of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Sweetwater County record: every hazard by year and month, the deadliest events and FEMA's declarations.