FORT CALHOUN
OperatingNuclear power plant
- Capacity
- 502 MW
- Primary fuel
- Nuclear
- County
- Washington County
- Operator
- OMAHA PUBLIC POWER DISTRICT
- Status
- Operating
- EIA plant ID
- 2289
- Coordinates
- 41.5205, -96.0775
FORT CALHOUN, a 502 MW Nuclear power plant in Washington County, Nebraska. Operated by OMAHA PUBLIC POWER DISTRICT.
Weather peril exposure
FORT CALHOUN is a 502 MW nuclear power plant in Washington County, NE, operated by OMAHA PUBLIC POWER DISTRICT. Washington County carries critical modeled catastrophe exposure in the FEMA National Risk Index, scoring 4.5 of 5 at the 87th national percentile. Tornado is the leading peril, rated Relatively Moderate by FEMA at the 97th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a nuclear plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Washington County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively Moderate | 97th | 4.9 of 5 | 0.32 |
| Heat wave | Very Low | 96th | 4.8 of 5 | 6.9 |
| Hail | Relatively Moderate | 88th | 4.5 of 5 | 6.7 |
| Wildfire | Relatively Low | 84th | 4.4 of 5 | <0.01 |
| Ice storm | Relatively Low | 78th | 4.1 of 5 | 0.81 |
| Strong wind | Relatively Low | 76th | 4.0 of 5 | 4.4 |
| Riverine flooding | Very Low | 57th | 3.3 of 5 | 0.93 |
| Lightning | Very Low | 49th | 2.9 of 5 | 45.2 |
| Winter weather | Very Low | 46th | 2.8 of 5 | 13.7 |
| Earthquake | Very Low | 11th | 1.4 of 5 | <0.01 |
Perils not assessed in Washington County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Hurricane | FEMA rating is "No Rating" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Washington County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.