FEMA rates relative strong wind risk for Washtenaw County as very high and reports FEMA annualized frequency of 5.943 per year for the area.
FEMA summary
FEMA's profile for Washtenaw County reports FEMA annualized frequency of 5.943 per year for strong wind. FEMA's relative risk rating for the area is very high; the annualized frequency is a separate measure.
Hazard metrics cover FEMA county-equivalent geographies rather than individual addresses or parcels. Use local or state hazard maps before making a property, insurance, retrofit, or evacuation decision.
Select a hazard to inspect FEMA's figures for Washtenaw County.
Strong Wind
FEMA combines its area-wide loss estimate and community data in this relative rating. Event frequency appears separately below.
Relative FEMA score
99.0/100
Occurrence thresholds vary by hazard. The FEMA methodology defines the value for each hazard.
The area loss estimate combines FEMA's modeled losses to buildings, population, and agriculture across Washtenaw County. It is not an estimate for a home or address.
City risk summary
For Ann Arbor, FEMA rates strong wind risk for Washtenaw County as very high, with a relative score of 99.0/100. The next highest relative scores are tornado at 96.5/100 and lightning at 90.1/100.
Using FEMA data for Washtenaw County, Ann Arbor is #11 among 18 covered Michigan entries for strong wind risk. South Lyon is about 13 straight-line miles from the Ann Arbor map point; its FEMA figures cover Oakland County.
For homeowners and movers
Preparedness actions
Living in Ann Arbor? Learn how to handle water storage, sanitation, and security in a small space.
The map shows Ann Arbor. All FEMA figures on this page cover Washtenaw County.
The FEMA figures cover Washtenaw County. Address-level conditions require local maps, building records, and property details.
FEMA rates relative strong wind risk for Washtenaw County as very high. Its FEMA annualized frequency is 5.943 per year. Damage at a specific address also depends on the building, soil, elevation, and exact hazard zone.
Among 18 Michigan cities covered by this directory, Ann Arbor is #11 for relative strong wind risk based on FEMA's score for Washtenaw County. Homes within Ann Arbor can have different soil, elevation, construction, and hazard-zone conditions.
In FEMA's data for Washtenaw County, the highest relative ratings are Strong Wind (Very High), Tornado (Relatively High), and Lightning (Relatively Moderate). FEMA uses estimated losses and community data along with event frequency when assigning these ratings.
The hazard numbers cover Washtenaw County. For an individual home, check local fault, flood, fire, evacuation, and building records for the exact address.
FEMA gives Washtenaw County an overall relative risk rating of relatively moderate. Conditions at a specific home depend on its hazard zones, building type, maintenance, insurance, and access to evacuation routes and emergency services.
Start with this step: Confirm the exact hazard using official local maps before making property or insurance decisions. Know how local officials issue warnings and evacuation instructions. Use Ready.gov Be Informed and local emergency guidance for a complete plan.
Distances are measured between city coordinates.
| City | Distance | Strong Wind rating | Relative score |
|---|---|---|---|
| South Lyon, MI | 13 mi | Very High | 99.3 |
| Westland, MI | 18 mi | Very High | 99.9 |
| Livonia, MI | 20 mi | Very High | 99.9 |
| Farmington Hills, MI | 23 mi | Very High | 99.3 |
| Dearborn, MI | 27 mi | Very High | 99.9 |
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View productHazard metrics come from FEMA National Risk Index v1.19.0 (March 2023). City population and coordinates come from SimpleMaps US Cities Database. For current conditions, use official local maps, warnings, inspections, and professional advice.