San Joaquin County, California tornadoes

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19confirmed tornadoes since NOAA records began in 1950 (the first here in 1967). Most recent: April 21, 2022, EFU. 2026 so far: 0 preliminary reports 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.

Recent warnings

Recent warnings in San Joaquin County

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The record

At a glance

Total191950 to 2025
Per year0.3average since 1950
Peak monthApril10 of 19
StrongestF1May 31, 1967
Deaths0whole paths, see note
Injuries0whole paths, see note

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

Seasons

When tornadoes hit here

By month

100 Jan: 1Feb: 0Mar: 4Apr: 10May: 1Jun: 1Jul: 0Aug: 0Sep: 0Oct: 1Nov: 0Dec: 1JanFebMarAprMayJunJulAugSepOctNovDec

April is the peak month, with 10 of 19 tornadoes.

By time of day

70 12 AM: 0: 0: 03 AM: 0: 1: 06 AM: 0: 0: 09 AM: 0: 0: 012 PM: 1: 0: 13 PM: 4: 1: 76 PM: 1: 3: 09 PM: 0: 0: 012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 5:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

40 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 1: 0: 11970: 1: 1: 0: 0: 0: 0: 0: 0: 1: 01980: 0: 2: 1: 0: 0: 0: 0: 0: 1: 01990: 0: 1: 0: 0: 0: 0: 4: 0: 1: 02000: 0: 0: 0: 0: 0: 2: 0: 0: 0: 02010: 0: 0: 1: 0: 0: 0: 0: 0: 0: 02020: 0: 0: 1: 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.

By rating

EF0
15
EF1
3
Unknown
1

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

Strongest

F1, May 31, 1967

0.1 mile path Longest path

1.5 miles, F0

April 27, 1970, whole path Widest

150 yards, F0

April 1, 1996
Every tornado

All 19 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Apr 21, 2022EFU0.02 mi16 yd00
Apr 11, 2012EF00.25 mi5 yd00
Dec 26, 2005F00.3 min/a00
Apr 8, 2005F01.5 min/a00
Mar 28, 1998F00.1 mi30 yd00
Apr 1, 1996F00.8 mi50 yd00
Apr 1, 1996F00.3 mi150 yd00
Apr 1, 1996F00.1 mi100 yd00
Apr 1, 1996F00.1 mi100 yd00
Mar 26, 1991F00.1 mi10 yd00
Apr 19, 1988F10.2 mi23 yd00
Jun 29, 1982F00.5 mi20 yd00
Mar 19, 1981F00.1 mi10 yd00
Jan 23, 1981F00.1 mi10 yd00
Mar 31, 1978F10.5 mi10 yd00
Apr 24, 1971F00.2 mi10 yd00
Apr 27, 1970F01.5 mi50 yd00
Oct 16, 1969F00.1 mi10 yd00
May 31, 1967F10.1 mi100 yd00
Cities

Cities in San Joaquin County

Each city page counts every tornado path within 10 miles of the city, including paths just over the county line.

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 13, 2026.