Eaton County, Michigan

What hazards hit Eaton County most?

The most frequent records are severe thunderstorm wind events: 130 since 1966. 51% of its severe thunderstorm wind events since 1966 fell in June and July. The rank column places the county among Michigan's counties by days with a record per 1,000 square miles of land over each hazard's complete period.

Source: NOAA NCEI Storm Events Database (county and forecast-zone records attributed to the county; a zone record shows its own totals on each county it covers). Days: dates with at least one record of the hazard in the county. Ranks: days with a record per 1,000 square miles of land (Census Bureau 2024 Gazetteer), since 1950 for tornadoes, 1955 for hail and thunderstorm wind, 1996 for the rest.

How many tornadoes has Eaton County had?

NOAA records 26 tornadoes in Eaton County from 1951 to 2026, the strongest rated F4, with 2 deaths and 53 injuries recorded in the county. That is 9th of 83 Michigan counties by days with tornadoes per 1,000 square miles since 1950. A tornado that crossed a county line is counted in each county it touched, with the length of its path inside the county.

Counted as whole tornadoes rather than county records, the Storm Prediction Center's database holds 26 tornadoes whose track touched Eaton County since 1950 (NOAA's county records number 26, the same count); along their whole tracks they killed 2 people.

Map of the strongest tornado tracks in Michigan.

Source: NOAA NCEI Storm Events Database, tornado records by county (path length in the county, maximum width); ratings as published: F scale before February 1, 2007, EF scale after. Whole-track figures: NOAA Storm Prediction Center tornado database (1950-2025). SPC severe weather database.

When was the last damaging storm in Eaton County?

The most recent record with damage, injuries or deaths is the August 24, 2023 thunderstorm wind ($4.8 million in damage in 2025 dollars).

Severe thunderstorm winds blew down numerous trees and tree limbs and power lines across portions of Eaton county. Some houses were damaged from falling trees and some power poles were damaged. Numerous trees were also snapped or uprooted in and near Grand Ledge along with damaged utility lines and buildings.
National Weather Service event narrative, NOAA Storm Events Database (search the full record, event 1125061)

Source: NOAA NCEI Storm Events Database; every record of 2025-2026 is listed, earlier ones when they caused deaths, injuries or $250,000 of damage (2025 dollars), and every tornado.

The deadliest and costliest records

A damage figure marked "step" is a record from before 1993: NOAA then filed damage by category, and the figure is the category as entered, in the dollars of that year, not an estimate of the loss.

Source: NOAA NCEI Storm Events Database: deaths and injuries direct and indirect; damage is property plus crops as estimated by the National Weather Service, converted to 2025 dollars.

Is it getting more frequent?

Records per decade for Eaton County's most frequent hazards. Counts rose everywhere after 1996, when NOAA began recording every event type, so compare decades within a hazard's complete period only (the shaded cells come before it).

Source: NOAA NCEI Storm Events Database, records per calendar decade; zone records from the CZ_TYPE field (Z).

What time of year?

51% of its severe thunderstorm wind events since 1966 fell in June and July. The two busiest months are in violet.

Source: NOAA NCEI Storm Events Database, records by the month they began.

Federal disaster declarations for Eaton County

FEMA's register lists 14 declarations that include Eaton County: 8 major disasters, 6 emergencies and 0 fire management assistance declarations. Most were for snowstorm (4) and flood (3).

Source: FEMA OpenFEMA Disaster Declarations Summaries (v2), declarations through October 2, 2026; one declaration is counted once however many areas it names. OpenFEMA dataset page.

How many floods has Eaton County had?

NOAA's Storm Events Database holds 12 flood or flash flood records for Eaton County from 1996 to 2020, on 12 days, with 0 deaths. By flood insurance claims since 1978 (OpenFEMA, as of September 8, 2026), Eaton County ranks 1088th of 2,942 U.S. counties.

The National Flood Insurance Program has paid $703,000 on 149 claims filed in Eaton County; the most in one year was 32 in 1982. Claims count insured losses only: uninsured flood damage is not in this file.

Source: FEMA OpenFEMA NFIP Redacted Claims, as of September 8, 2026; claims by year of loss, payments in the dollars of the year paid. OpenFEMA dataset page.

FEMA's modeled risk for Eaton County

FEMA's National Risk Index rates Eaton County Relatively Low overall, with an expected annual loss of $30.0 million. These are FEMA's model estimates of future loss from 18 hazards, not a count of what happened; they can differ from the record above.

Source: FEMA National Risk Index, county table, December 2025 release. FEMA's National Risk Index map.

Counties that share a border with Eaton County

1. Calhoun County 532
2. Jackson County 394
3. Ingham County 392
4. Barry County 358
5. Clinton County 333
6. Eaton County 314
7. Ionia County 309

Source: U.S. Census Bureau county adjacency file; NOAA NCEI Storm Events Database, records since 1950. The Census Bureau's adjacency file.

Next

• Tornadoes in MichiganEvery Michigan tornado since 1950 and the counties with the most per square mile
• Severe thunderstorm wind in MichiganThe state's severe thunderstorm wind events, by county, year and month
• The Michigan recordEvery hazard in the state, its deadliest events and its federal declarations
• FEMA's risk rating for each hazard in Eaton CountyThe hazard risk calculator: 18 hazards beside the county's record
• Download Eaton County's FEMA declarations (CSV)14 rows: every declaration that named the county, for your own analysis