Michigan

Storm History: Shiawassee County, Michigan

321 episodes, 434 events since 1955

Every storm the National Weather Service has filed in Shiawassee 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
434
Deaths
0
Injuries
32
Damage
$44 million
Episodes
321

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 Shiawassee 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
Hail12101$5.9 million
Tornado104016$19 million
Thunderstorm Wind5900$1.6 million
Heavy Snow2800
High Wind2100$10 million
Flash Flood1800$1.2 million
Winter Storm1600$1.0 million
Flood1200$70,000
Heat1205
Ice Storm900$3.0 million
Cold/Wind Chill8010$25,000
Blizzard500
Extreme Cold/Wind Chill500
Lightning400$110,000
Excessive Heat300
Winter Weather200
Drought200
Strong Wind200$7,000
Dense Fog100
Frost/Freeze100$1.3 million
Lakeshore Flood100$200,000

The deadliest

None recorded.

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 Shiawassee County, with its track

Every episode, newest first

Earlier years, state by state:

More

Tornadoes in Shiawassee CountyEvery warning in Shiawassee 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.