Grant County Disaster Risk
Grant County, Wisconsin
FEMA Risk Rating
Relatively Low
National Percentile
61th
of 3,144 counties
State Rank
#41
of 72 (1 = highest risk)
Flood Risk
62th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 62% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Very Low
Higher than 17% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively Low
Higher than 76% of US counties
Earthquake
Seismic activity and ground shaking risk
Very Low
Higher than 30% of US counties
Hurricane
Tropical cyclone and hurricane risk
Very Low
Higher than 15% of US counties
Risk Overview
About Natural Disaster Risk in Grant County, Wisconsin
Grant County faces moderate-elevated risk
Grant County scores 61.07 on the composite risk scale, placing it slightly above the national average and indicating moderate-to-elevated natural disaster exposure. This county experiences hazards at rates comparable to or somewhat higher than much of the nation.
Above Wisconsin's average vulnerability
At 61.07, Grant County exceeds Wisconsin's state average of 59.08, placing it among the state's more vulnerable communities. This modest elevation indicates moderate hazard exposure compared to peers statewide.
More hazard-prone than neighbors
Grant County's 61.07 score exceeds nearby Green County (46.41) and Green Lake County (58.05), making it the more vulnerable member of this regional trio. However, it remains significantly safer than Fond du Lac County (76.30) and Eau Claire County (78.31).
Tornadoes lead multiple threats
Tornado risk dominates at 76.37, making severe thunderstorms the primary threat to Grant County residents, while flooding presents substantial secondary risk at 62.25. Earthquake (29.80) and hurricane (15.31) risks are moderate, with wildfire remaining minimal at 16.67.
Prioritize storm and flood coverage
With tornado risk at 76.37 and flood risk at 62.25, homeowners should secure comprehensive coverage for both wind and water damage. Develop and practice a family emergency plan focusing on tornado sheltering and flood evacuation routes.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Grant County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Grant County
Risk Verdict
Grant County ranks at the 61th percentile nationally for natural disaster risk — below the median for U.S. counties. Residents are encouraged to understand which hazards dominate locally and tailor their preparedness accordingly.
Hazard Breakdown
Tornado risk is Grant County's dominant natural hazard, ranked at the 76th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 62th percentile nationally. Additional tracked hazards include earthquake (30th percentile), wildfire (17th percentile), hurricane (15th percentile).
Preparedness Context
Grant County ranks at the 76th percentile nationally for tornado exposure. Unlike many slow-onset hazards, tornadoes in Grant County can reach full intensity in minutes; a pre-practiced household shelter plan matters far more than stockpiled supplies. Flood is the second hazard driver for Grant County at the 62th percentile nationally, meaning households should maintain awareness of both severe-weather and flood-specific warning systems. Grant County county emergency management typically publishes annual severe-weather preparedness guides tailored to local tornado patterns; households benefit from reviewing these before storm season begins each spring.
Regional Context
The county's composite score diverges by only 2.0 points from the Wisconsin average, making Grant County's hazard profile broadly typical for this part of the state.
Is your household prepared for Grant County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Grant County, WI?
What types of natural hazards affect Grant County?
How does Grant County risk compare to the Wisconsin average?
Is Grant County at risk for tornado?
How is natural disaster risk measured?
Why is Grant County higher risk than average?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.