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

Oakland County Disaster Risk

Oakland County, Michigan

FEMA Risk Rating

Relatively High

National Percentile

98th

of 3,144 counties

State Rank

#2

of 83 (1 = highest risk)

Flood Risk

97th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively High

Higher than 97% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 58% of US counties

Tornado

Tornado and severe thunderstorm risk

Very High

Higher than 100% of US counties

Earthquake

Seismic activity and ground shaking risk

Moderate

Higher than 87% of US counties

Hurricane

Tropical cyclone and hurricane risk

Relatively Low

Higher than 51% of US counties

Risk Overview

About Natural Disaster Risk in Oakland County, Michigan

Oakland faces the highest disaster risk in Michigan

Oakland County's composite risk score of 97.52 dramatically exceeds the national average, earning a "Relatively High" rating that signals exceptional natural disaster vulnerability. The county's risk is nearly double the national typical score, reflecting concentrated exposure to multiple severe hazards.

Michigan's most disaster-prone county

Oakland County's 97.52 composite score is the highest in Michigan, nearly double the state average of 49.56, making it an extreme outlier in statewide natural disaster risk. No other Michigan county faces comparable combined hazard exposure across floods, tornadoes, earthquakes, and other disasters.

Far riskier than surrounding counties

Oakland's 97.52 score vastly exceeds neighboring counties and nearby regions, making it a clear hazard hotspot for southeast Michigan. The county stands alone as Michigan's most disaster-vulnerable area by a substantial margin.

Tornadoes, floods, and earthquakes pose major threats

Tornado risk of 99.71 and flood risk of 97.49 are among the worst in the nation, while earthquake risk of 86.67 adds a third severe hazard unique to this region. These three factors combine to create an exceptional and multi-faceted natural disaster risk profile.

Comprehensive protection is essential for Oakland residents

Oakland County homeowners must secure homeowners insurance with robust tornado and wind coverage, plus mandatory separate flood insurance—standard policies exclude flood damage. Given the county's extreme composite risk, reviewing coverage annually with an insurance professional is strongly recommended.

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

Preparedness Guide

What to Prepare for in Oakland County

Top Hazards by Exposure

  1. #1
    TornadoPrepare
    100th percentile
  2. #2
    FloodPrepare
    97th percentile
  3. #3
    EarthquakePrepare
    87th percentile

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

Risk Advisory: Oakland County

Risk Verdict

At the 98th percentile nationally, Oakland County is among the more hazard-exposed counties in the United States. Proactive preparedness — not reactive response — is key to managing life in one of the country's higher-risk counties; Oakland County residents should plan accordingly.

Hazard Breakdown

Tornado risk is Oakland County's dominant natural hazard, ranked at the 100th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 97th percentile nationally. Additional tracked hazards include earthquake (87th percentile), wildfire (58th percentile), hurricane (51th percentile).

Preparedness Context

At the 100th percentile nationally for tornado risk, Oakland County households benefit most from a reliable alert system — a NOAA weather radio that activates during overnight hours when residents may not be checking smartphone alerts. Alongside tornado exposure, flood at the 97th percentile nationally means Oakland County households face multi-hazard severe-weather seasons that benefit from a single integrated emergency plan covering both threats. For Oakland County households, a pre-decided family shelter plan — who goes where, how children are retrieved from school during a warning, and a neighborhood meet-up point if phones fail — provides real protection that no supply kit alone can replicate.

Regional Context

At 48.0 points above the Michigan state average, Oakland County carries meaningfully higher natural disaster exposure than a typical Michigan county.

Is your household prepared for Oakland 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 Oakland County, MI?
Oakland County has a FEMA National Risk Index rating of Relatively High, placing it in the 98th 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 Oakland County?
Oakland County is evaluated for five major natural hazard types: tornado (100th percentile), flooding (97th percentile), earthquake (87th percentile), wildfire (58th percentile), hurricane (51th percentile). The highest-risk hazard is tornado at the 100th 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 Oakland County risk compare to the Michigan average?
Oakland County's composite risk percentile is 98th, compared to the Michigan state average of 50th percentile. The state's overall risk rating is Relatively Low. This means Oakland County faces higher natural disaster risk than the typical county in Michigan.
Is Oakland County at risk for tornado?
Yes, Oakland County's tornado risk is at the 100th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Oakland County is at the 97th 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 Oakland County higher risk than average?
Oakland County's composite risk score of 98th percentile is above the Michigan state average of 50th percentile. This elevated risk is driven by tornado exposure (100th percentile), along with flooding and earthquake and wildfire and hurricane risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.
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.