Harrison, WI
Local storm history & FEMA National Risk Index data
Harrison is rated Very Low for overall natural hazard risk — among the lowest-risk counties in the country — based on FEMA's National Risk Index for Calumet County, WI. The county's highest-rated hazards are hail, cold wave, and tornado.
Storm events near Harrison
NOAA-recorded tornado, hail, and flood events within 25 miles of Harrison's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Harrison itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Calumet County's FEMA National Risk Index scores, covering Harrison along with the rest of the county, not a Harrison-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 10.1 | Very Low |
| Inland Flooding | 33.1 | Very Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 15.4 | Very Low |
| Heat Wave | 46.2 | Relatively Low |
| Tornado | 58.2 | Relatively Low |
| Avalanche | — | Not Applicable |
| Cold Wave | 71.5 | Relatively Moderate |
| Drought | 0 | No Rating |
| Hail | 81.9 | Relatively Moderate |
| Hurricane | 10.2 | Very Low |
| Ice Storm | 16.8 | Very Low |
| Landslide | 24.5 | Very Low |
| Lightning | 54.3 | Relatively Low |
| Strong Wind | 41.3 | Relatively Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 33.7 | Relatively Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Calumet County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Calumet County:
Frequently asked questions
What natural hazards is Harrison, WI at risk of?
Harrison is rated Very Low for overall natural hazard risk by FEMA's National Risk Index — among the lowest-risk counties in the country. The highest-rated hazards for Calumet County, where Harrison is located, are hail, cold wave, and tornado.
What is Harrison's biggest natural hazard risk?
Hail is the highest-rated hazard for Calumet County, where Harrison is located, scoring 81.9 out of 100 on FEMA's National Risk Index (rated "Relatively Moderate").
Is Harrison a high-risk area for natural disasters?
No — Harrison carries among the lowest-risk counties in the country for overall natural hazard risk, per FEMA's National Risk Index rating of "Very Low" for Calumet County.
Has Harrison had tornadoes, hail, or flooding?
NOAA has recorded 17 tornado, 119 hail, 20 inland flooding events within 25 miles of Harrison since 2016.