Ann Arbor, MI
Local storm history & FEMA National Risk Index data
Ann Arbor is rated Relatively Moderate for overall natural hazard risk — near the middle compared to other US counties — based on FEMA's National Risk Index for Washtenaw County, MI. The county's highest-rated hazards are strong wind, tornado, and cold wave.
Storm events near Ann Arbor
NOAA-recorded tornado, hail, and flood events within 25 miles of Ann Arbor's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Ann Arbor itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Washtenaw County's FEMA National Risk Index scores, covering Ann Arbor along with the rest of the county, not a Ann Arbor-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 43.8 | Very Low |
| Inland Flooding | 90.3 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 74.3 | Relatively Low |
| Heat Wave | 87.4 | Relatively Moderate |
| Tornado | 96.9 | Relatively High |
| Avalanche | — | Not Applicable |
| Cold Wave | 93.1 | Relatively High |
| Drought | 0 | No Rating |
| Hail | 85.8 | Relatively Moderate |
| Hurricane | 48.3 | Very Low |
| Ice Storm | 90.4 | Relatively High |
| Landslide | 69.9 | Relatively Low |
| Lightning | 88.8 | Relatively High |
| Strong Wind | 98 | Relatively High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 73 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Washtenaw County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Washtenaw County:
More on Washtenaw County:
Frequently asked questions
What natural hazards is Ann Arbor, MI at risk of?
Ann Arbor is rated Relatively Moderate for overall natural hazard risk by FEMA's National Risk Index — near the middle compared to other US counties. The highest-rated hazards for Washtenaw County, where Ann Arbor is located, are strong wind, tornado, and cold wave.
What is Ann Arbor's biggest natural hazard risk?
Strong Wind is the highest-rated hazard for Washtenaw County, where Ann Arbor is located, scoring 98 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Ann Arbor a high-risk area for natural disasters?
Somewhat — Ann Arbor carries near the middle compared to other US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Moderate" for Washtenaw County.
Has Ann Arbor had tornadoes, hail, or flooding?
NOAA has recorded 10 tornado, 87 hail, 29 inland flooding events within 25 miles of Ann Arbor since 2016.