Natural Disaster Risk in Jefferson County

Natural Hazard Profile: Jefferson County, Wisconsin

Jefferson County is located in the United States in Wisconsin, home to roughly 84,877 residents. The county experiences long, cold winters with lake-effect snow and warm summers, with severe blizzards and spring tornado outbreaks shaping the natural hazards faced by its communities. FEMA assesses risk at this county level, providing the baseline for every city and ZIP code within its boundaries.

FEMA rates Jefferson County's composite natural disaster risk at 6.2 out of 10 — high risk. Hailstorm risk tops the local hazard profile, driven by frequent severe thunderstorm development that produces some of the most property-damaging hail in the country. Residents should also account for tornado and cold wave risk in their preparedness planning.

Jefferson County's risk score, slightly above the 5.4/10 state average and above the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for Jefferson County, the highest-scoring are hail, tornado, and cold wave. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Jefferson County's high risk designation reflects meaningful exposure to natural hazards. Residents should verify that their insurance covers the area's primary risks, prepare a family emergency plan, and stay informed about seasonal hazard peaks through local weather and emergency management services.