Michigan

Storm History: Ontonagon County, Michigan

539 episodes, 630 events since 1953

Every storm the National Weather Service has filed in Ontonagon County, Michigan: floods, hail, damaging wind, tornadoes, winter storms, heat and the rest, with the most serious on record. Events filed by forecast zone count for every county the zone covers.

The record

Events
630
Deaths
3
Injuries
3
Damage
$12 million
Episodes
539

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Open the live radar over Ontonagon County

Every year

From 1996 the record holds 48 kinds of event with each office’s narrative; before that, tornadoes, hail and thunderstorm wind only, and before 1955 tornadoes alone.

By kind of event

Counted under the kind that heads each episode.

Kind of eventEventsDeathsInjuriesDamage
Winter Storm14012$25,000
Winter Weather9711$17,000
Hail7400$34,000
Lake-Effect Snow5700
Blizzard5200$15,000
Heavy Snow5100
Thunderstorm Wind2600$201,000
Flash Flood2200$1.8 million
High Wind1900$1.0 million
Tornado1800$282,000
Cold/Wind Chill1600
Extreme Cold/Wind Chill1300
Ice Storm1000$100,000
Frost/Freeze1000
Flood800$8.8 million
Dense Fog400
Heavy Rain400
Heat300
Wildfire200$1,000
Excessive Heat200
Lakeshore Flood100
Rip Current110

The deadliest

The costliest

Damage within this county, in the dollars of its year.

The largest hail

The largest stone in each episode, which may have fallen in a neighboring county of the same episode.

The strongest tornadoes

Every tornado in Ontonagon County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Ontonagon CountyEvery warning in Ontonagon County since 1986Every county in Michigan

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.