St. Mary's County, Maryland tornadoes

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34confirmed tornadoes since NOAA records began in 1950 (the first here in 1967). Most recent: July 1, 2025, EF1. 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 St. Mary's County

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The record

At a glance

Total341950 to 2025
Per year0.4average since 1950
Peak monthMay6 of 34
StrongestF2Oct 13, 1983
Deaths0whole paths, see note
Injuries4whole paths, see note

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

Seasons

When tornadoes hit here

By month

60 Jan: 1Feb: 2Mar: 0Apr: 1May: 6Jun: 6Jul: 6Aug: 5Sep: 2Oct: 3Nov: 2Dec: 0JanFebMarAprMayJunJulAugSepOctNovDec

May is the peak month, with 6 of 34 tornadoes.

By time of day

70 12 AM: 0: 0: 03 AM: 0: 2: 06 AM: 0: 0: 09 AM: 1: 0: 312 PM: 0: 3: 33 PM: 4: 2: 56 PM: 7: 3: 09 PM: 0: 0: 112 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM

Most often around 6:00 PM. Times as recorded by NOAA, mostly Central Standard Time.

By year, 1950 to 2025

60 1950: 0: 0: 0: 0: 0: 0: 0: 0: 0: 01960: 0: 0: 0: 0: 0: 0: 0: 1: 0: 01970: 0: 0: 0: 0: 0: 0: 0: 0: 0: 11980: 0: 0: 0: 1: 2: 0: 0: 0: 0: 01990: 0: 0: 0: 0: 0: 6: 1: 0: 0: 02000: 1: 1: 0: 2: 1: 0: 1: 0: 0: 02010: 0: 4: 1: 3: 1: 1: 1: 0: 0: 02020: 2: 0: 2: 0: 0: 119501960197019801990200020102020

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
22
EF1
11
EF2
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

F2, October 13, 1983

4 mile path Longest path

23.63 miles, EF0

February 21, 2014, whole path Widest

800 yards, EF1

June 27, 2015
Every tornado

All 34 tornadoes, newest first

DateRatingPath lengthWidthDeathsInjuries
Jul 1, 2025EF10.98 mi100 yd00
Jun 8, 2022EF03.01 mi75 yd00
May 27, 2022EF14.14 mi100 yd00
Aug 4, 2020EF05.24 mi100 yd00
Aug 4, 2020EF01.47 mi75 yd00
Feb 24, 2016EF06.55 mi75 yd00
Jun 27, 2015EF116.11 mi800 yd00
Feb 21, 2014EF023.63 mi75 yd00
Jun 13, 2013EF01.8 mi75 yd00
Jun 13, 2013EF013.83 mi200 yd00
Jun 10, 2013EF00.25 mi50 yd00
Jul 15, 2012EF00.05 mi50 yd00
Sep 7, 2011EF00.98 mi50 yd00
Aug 25, 2011EF00.05 mi25 yd00
Aug 25, 2011EF03.41 mi50 yd00
Apr 28, 2011EF13.37 mi150 yd00
Jun 27, 2006F03 mi50 yd00
Jul 14, 2004F13 mi250 yd00
May 7, 2003F02 mi100 yd00
May 7, 2003F00.5 mi75 yd00
May 22, 2001F00.2 mi50 yd00
Jul 31, 2000F00.5 mi30 yd00
Jul 12, 1996F11.2 mi100 yd00
Nov 11, 1995F00.1 mi50 yd00
Nov 11, 1995F00.8 mi73 yd00
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.