St. Clair County, Michigan tornadoes

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24confirmed tornadoes since NOAA records began in 1950 (the first here in 1953). Most recent: October 14, 2021, EF0. 2026 so far: 1 preliminary report preliminary

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Map

Every tornado path in the county

Tornado paths, 1950 to 2025
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(E)F0(E)F1(E)F2(E)F3(E)F4(E)F5Unrated

Each path is a straight line from where the tornado started to where it ended, which is all most NOAA records hold. Tap a path for its details.

The record

At a glance

Total241950 to 2025
Per year0.3average since 1950
Peak monthMay8 of 24
StrongestF4May 21, 1953
Deaths3whole paths, see note
Injuries100whole paths, see note

Deaths and injuries are NOAA's totals for each tornado's whole path, which can extend beyond St. Clair County.

Seasons

When tornadoes hit here

By month

80 Jan: 0Feb: 0Mar: 1Apr: 0May: 8Jun: 6Jul: 2Aug: 1Sep: 4Oct: 1Nov: 1Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 8 of 24 tornadoes.

By time of day

30 12 AM: 0: 0: 03 AM: 0: 0: 06 AM: 1: 0: 09 AM: 0: 1: 112 PM: 0: 2: 13 PM: 3: 3: 26 PM: 2: 2: 09 PM: 2: 2: 212 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 3:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

30 1950: 0: 0: 0: 2: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01970: 0: 0: 0: 0: 0: 2: 0: 1: 1: 01980: 0: 0: 0: 1: 3: 0: 0: 0: 0: 01990: 2: 1: 0: 0: 0: 1: 2: 0: 0: 12000: 0: 0: 0: 0: 3: 0: 0: 0: 0: 02010: 1: 0: 0: 0: 0: 2: 0: 0: 0: 02020: 0: 1: 0: 0: 0: 019501960197019801990200020102020

The line is the five-year average. Tornadoes before about 1953 were under-reported, and better radar since the 1990s finds more weak ones. This year so far: 1 preliminary reports.

By rating

EF0
4
EF1
14
EF2
2
EF3
2
EF4
2

Ratings before February 2007 use the original F scale; the numbers line up with today's EF scale. Unknown means NOAA could not assign a rating.

The record

Notable tornadoes

Deadliest

F4, May 21, 1953

2 deaths, 68 injuries Strongest

F4, May 21, 1953

10 mile path Longest path

33.8 miles, F4

June 8, 1953, whole path Widest

1,760 yards, F4

May 21, 1953
Every tornado

All 24 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Oct 14, 2021EF00.43 mi120 yd00
Nov 6, 2015EF01.21 mi75 yd00
Jun 22, 2015EF00.63 mi50 yd00
Jun 27, 2010EF12.91 mi250 yd14
May 31, 2004F11.5 mi80 yd00
May 23, 2004F11 mi75 yd00
May 14, 2004F00.5 mi30 yd00
Jul 28, 1999F10.3 mi100 yd00
Jun 21, 1996F20.2 mi30 yd00
Jun 21, 1996F10.1 mi20 yd00
May 28, 1995F10.6 mi100 yd00
Mar 27, 1991F110 mi150 yd00
Sep 14, 1990F12 mi33 yd00
Sep 6, 1990F12 mi40 yd00
Sep 2, 1984F315.6 mi400 yd01
Jul 10, 1984F10.3 mi30 yd00
May 22, 1984F10.2 mi20 yd01
May 2, 1983F323 mi200 yd03
Aug 19, 1978F10.5 mi100 yd00
Sep 17, 1977F15.2 mi117 yd00
Jun 4, 1975F10.1 mi10 yd00
May 21, 1975F20.1 mi20 yd00
Jun 8, 1953F433.8 mi833 yd023
May 21, 1953F410 mi1,760 yd268
This year

2026 preliminary reports not yet confirmed

Report dateLocationRating
Sep 2, 20261 NE MarysvilleNot yet rated

Preliminary reports from the Storm Prediction Center. One tornado can be reported more than once, and NOAA confirms the final record months later.

Nearby

Nearby counties

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Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025, and SPC preliminary reports for 2026. Page built October 12, 2026.