Tornadoes · United States · Maryland
Tornadoes in Baltimore County, Maryland
32 tornadoes have crossed Baltimore County since 1950, 1 of them surveyed so far this year and still preliminary, 4th of the 24 counties in Maryland with a tornado on record, an average of one every 2.4 years. They have killed 2 people and injured 68. None was rated F4 or above. Before 1950, Grazulis's record of significant tornadoes has 3 more crossing the county, back to 1807.
The rating scale
Tracks are drawn in the color of the rating. The United States rated tornadoes on Ted Fujita’s F scale until 31 January 2007 and on the Enhanced Fujita scale after it. Both run from 0 to 5, and both rate the damage rather than measure the wind: the speeds are what that damage is taken to imply.
F0 / EF040 to 72 mph on the F scale, 65 to 85 mph on the EF scale
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F1 / EF173 to 112 mph on the F scale, 86 to 110 mph on the EF scale
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
F2 / EF2113 to 157 mph on the F scale, 111 to 135 mph on the EF scale
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
F3 / EF3158 to 206 mph on the F scale, 136 to 165 mph on the EF scale
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
F4 / EF4207 to 260 mph on the F scale, 166 to 200 mph on the EF scale
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
F5 / EF5261 to 318 mph on the F scale, over 200 mph on the EF scale
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.
Now
- Tornadoes
- 32
- Deaths
- 2
- Injuries
- 68
- F4 and above
- 0
- Worst on record
- F2, October 18, 1990
The deadliest in Baltimore County
The strongest
Every year with a tornado
The 22 years of the 76 in the record with a tornado in Baltimore County. Each year links to every tornado in Maryland that year.
Every tornado that crossed Baltimore County
32 tornadoes, newest first. The 1 at the top is this year's, from the surveying office rather than SPC's published database, and its rating is marked as preliminary.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| August 10, 2026 | 4:39 PM EDT | EF0 | Baltimore | 1.9 | 90 | |||
| May 16, 2025 | 5:51 PM EDT | EF1 | City of Baltimore | 4.3 | 75 | $1.5 million | ||
| June 5, 2024 | 9:27 PM EDT | EF1 | Baltimore | 0.9 | 110 | $5.0 million | ||
| June 5, 2024 | 8:45 PM EDT | EF1 | City of Baltimore | 3.3 | 175 | $12 million | ||
| April 22, 2023 | 3:18 PM EDT | EF0 | Harford | 6.7 | 50 | $1.0 million | ||
| September 1, 2021 | 2:48 PM EDT | EF0 | Baltimore | 6.7 | 75 | $40,000 | ||
| June 3, 2021 | 4:51 PM EDT | EF1 | Baltimore | 2.2 | 120 | $250,000 | ||
| April 26, 2019 | 3:19 PM EDT | EF1 | Baltimore | 2.9 | 150 | |||
| November 2, 2018 | 9:42 PM EDT | EF1 | City of Baltimore | 2.7 | 150 | 2 | 1 | $15,000 |
| June 10, 2013 | 3:44 PM EDT | EF0 | Baltimore | 0.2 | 75 | $10,000 | ||
| June 10, 2013 | 3:24 PM EDT | EF0 | Baltimore | 0.5 | 100 | $1,000 | ||
| April 28, 2011 | 9:54 AM EDT | EF0 | Baltimore | 1.1 | 75 | $1,000 | ||
| April 28, 2011 | 8:09 AM EDT | EF0 | Baltimore | 1.1 | 50 | $5,000 | ||
| November 17, 2010 | 1:35 AM EST | EF1 | City of Baltimore | 0.4 | 250 | 3 | $250,000 | |
| June 20, 2009 | 3:44 PM EDT | EF1 | Baltimore | 5.0 | 150 | |||
| June 9, 2009 | 5:21 PM EDT | EF0 | Baltimore | 1.0 | 150 | |||
| June 13, 2007 | 5:10 PM EDT | EF0 | Baltimore | 2.0 | 75 | |||
| May 13, 2000 | 8:00 PM EDT | F1 | Baltimore | 5.0 | 70 | $250,000 | ||
| July 30, 1999 | 8:30 PM EDT | F0 | Baltimore | 3.0 | 50 | $10,000 | ||
| March 29, 1997 | 1:42 PM EST | F0 | Baltimore | 0.5 | 23 | $20,000 | ||
| November 8, 1996 | 3:45 PM EST | F1 | Baltimore | 3.8 | 100 | 1 | $750,000 | |
| July 19, 1996 | 3:55 PM EDT | F1 | Baltimore | 1.2 | 50 | $70,000 | ||
| July 24, 1995 | 3:20 PM EDT | F1 | Baltimore | 2.0 | 73 | $50,000 to $500,000 | ||
| July 6, 1995 | 5:45 PM EDT | F0 | Baltimore | 0.1 | 10 | $500 to $5,000 | ||
| November 1, 1994 | 2:20 PM EST | F1 | Baltimore | 0.7 | 70 | $500,000 to $5 million | ||
| November 1, 1994 | 2:15 PM EST | F1 | Baltimore | 1.5 | 73 | $500,000 to $5 million | ||
| October 18, 1990 | 3:49 PM EDT | F1 | Baltimore | 0.1 | 10 | $50,000 to $500,000 | ||
| October 18, 1990 | 3:30 PM EDT | F2 | Baltimore | 0.1 | 100 | 59 | $5 million to $50 million | |
| June 8, 1990 | 5:35 PM EDT | F0 | Baltimore | 0.3 | 13 | $500 to $5,000 | ||
| September 5, 1979 | 3:00 PM EDT | F2 | Baltimore | 0.5 | 20 | $50,000 to $500,000 | ||
| August 11, 1978 | 7:00 PM EDT | F1 | Baltimore | 0.3 | 50 | $500 to $5,000 | ||
| June 16, 1973 | 5:50 PM EDT | F2 | Baltimore | 0.1 | 10 | 4 | $5,000 to $50,000 |
Baltimore County before 1950
Before 1950 the record is Thomas P. Grazulis’s list of significant tornadoes: those rated F2 or stronger, and weaker ones that killed somebody. 3 of them crossed Baltimore County, killing 0. They are not in the figures above, which are SPC's from 1950.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| October 21, 1939 | 7:00 PM EST | F2 | W Hereford, MD | 7.8 | 400 | 1 | ||
| July 15, 1938 | 3:00 AM EST | F2 | W Manchester/Freeland, MD/New Freedom, PA/Delta, PA | 21.9 | ||||
| April 29, 1807 | 3:00 PM EST | Unrated | Gunpowder Falls, MD |
About the record before 1950
- Significant tornadoes only
- Grazulis listed tornadoes rated F2 or stronger, and weaker ones that killed somebody. Most tornadoes are weaker than F2, so the list holds a fraction of the tornadoes that happened.
- The early years are thin
- A tornado is on record only where somebody saw it and wrote it down. The count rises through the 1800s with settlement and newspapers, not with the weather.
- Rated from accounts
- Grazulis rated each tornado decades later from newspaper reports, Weather Bureau records and local histories, not from a damage survey.
- The tracks are reconstructed
- Tornado Archive drew each path through the places Grazulis names, most often as a straight line from the first to the last. A track can miss a town it hit, and a tornado with one named place is a point. The counties are today’s.
- A separate record
- SPC’s database, from 1950, counts every confirmed tornado of any strength. The two are kept apart on every page and never added together.
Nearby
Warnings in force in Baltimore CountyThe forecast for Baltimore CountyThe live radar over Baltimore CountyEvery county in Maryland
What this means
Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center. Before 1950: Thomas P. Grazulis, Significant Tornadoes 1680-1991 and Significant Tornadoes 1880-1989, as digitized by Tornado Archive (Maas and others, 2024). Public domain. Counties assigned by this site from today’s NWS county lines.