riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Calhoun County Disaster Risk

Calhoun County, Michigan

FEMA Risk Rating

Relatively Low

National Percentile

75th

of 3,144 counties

State Rank

#16

of 83 (1 = highest risk)

Flood Risk

76th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 76% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 28% of US counties

Tornado

Tornado and severe thunderstorm risk

Moderate

Higher than 88% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 67% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 38% of US counties

Risk Overview

About Natural Disaster Risk in Calhoun County, Michigan

Calhoun County: Above-Average Risk

Calhoun County's composite risk score of 74.52 places it well above the national average, earning a Relatively Low rating despite significant tornado and earthquake hazards. The score reflects notable exposure that demands serious preparedness from residents and business owners. This above-average positioning makes Calhoun one of Michigan's more hazard-prone counties.

Higher Risk Than Michigan Average

At 74.52, Calhoun County's composite risk significantly exceeds Michigan's state average of 49.56, making it one of the state's more hazardous counties. The county ranks in the upper tier of Michigan's risk spectrum. This elevated exposure reflects particular vulnerability to tornadoes and seismic activity.

Highest-Risk County in Its Group

Calhoun County (74.52) exceeds neighboring Branch County (51.81) and Cass County (47.71) in overall composite risk, making it the most hazard-prone county in south-central Michigan. The county ranks close to Berrien County (81.71) in risk levels. This regional positioning reflects Calhoun's particular vulnerability to severe weather.

Tornado Risk Dominates

Tornado risk reaches 88.33 in Calhoun County—the highest tornado hazard of any assessed Michigan county in this dataset—making severe convective storms the primary natural disaster threat. Earthquake risk (66.60) presents a secondary but substantial concern for the county. Together, these two hazards drive Calhoun's elevated composite risk profile.

Prioritize Storm Shelters

Given the exceptional tornado risk, immediately establish a safe room in your basement or interior bathroom on the lowest floor of your home, reinforced if possible. Maintain a weather alert radio and review your tornado emergency plan with family at least twice yearly. Purchase comprehensive homeowners insurance including wind and hail coverage, and verify that your policy limits reflect current home replacement costs.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Calhoun County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    88th percentile
  2. #2
    FloodPrepare
    76th percentile
  3. #3
    EarthquakePrepare
    67th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Local Resources

Risk Advisory: Calhoun County

Risk Verdict

Calhoun County sits below the national average for natural disaster exposure, ranking at the 75th percentile across all U.S. counties. Understanding the specific hazards behind Calhoun County's ranking helps residents prioritize where to direct emergency planning efforts.

Hazard Breakdown

Tornado risk is Calhoun County's dominant natural hazard, ranked at the 88th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 76th percentile nationally. Additional tracked hazards include earthquake (67th percentile), hurricane (38th percentile), wildfire (28th percentile).

Preparedness Context

Ranked at the 88th percentile nationally for tornado risk, Calhoun County is in a zone where storm shelters have the highest per-dollar protective value of any mitigation investment. Calhoun County's county shelter map is typically available through the local emergency management office. The secondary flood hazard at the 76th percentile nationally adds seasonal complexity to Calhoun County's preparedness calendar, since flood and tornado risk often peak at different points in the year. Calhoun County residents can check the county's emergency management website for community shelter locations nearest their address — a step worth completing now, not during a warning.

Regional Context

A composite score 25.0 points above the Michigan state average puts Calhoun County in a higher-risk category than most counties in the state.

Is your household prepared for Calhoun County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Calhoun County, MI?
Calhoun County has a FEMA National Risk Index rating of Relatively Low, placing it in the 75th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Calhoun County?
Calhoun County is evaluated for five major natural hazard types: tornado (88th percentile), flooding (76th percentile), earthquake (67th percentile), hurricane (38th percentile), wildfire (28th percentile). The highest-risk hazard is tornado at the 88th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Calhoun County risk compare to the Michigan average?
Calhoun County's composite risk percentile is 75th, compared to the Michigan state average of 50th percentile. The state's overall risk rating is Relatively Low. This means Calhoun County faces higher natural disaster risk than the typical county in Michigan.
Is Calhoun County at risk for tornado?
Yes, Calhoun County's tornado risk is at the 88th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Calhoun County is at the 76th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Why is Calhoun County higher risk than average?
Calhoun County's composite risk score of 75th percentile is above the Michigan state average of 50th percentile. This elevated risk is driven by tornado exposure (88th percentile), along with flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.

Counties with Similar Risk

Livingston County

Michigan

-1.0

Relatively Low

73th percentile

Tuscola County

Michigan

-1.5

Relatively Low

73th percentile

Jackson County

Michigan

+1.9

Relatively Low

76th percentile

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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.

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