Tornadoes · United States · Maryland · 2026

EF0 tornado, Baltimore County, Maryland, August 10, 2026

Name: EF0 tornado, Baltimore County, Maryland, August 10, 2026
Start: 2026-08-10T20:39:00.000Z
End: 2026-08-10T20:45:00.000Z
Location: Baltimore County, Maryland

This EF0 tornado ran 1.9 miles across Baltimore County on August 10, 2026, touching down at 4:39 PM EDT and reaching 90 yards wide. It killed nobody.

Preliminary. This is NWS LWX's damage survey, filed in the Damage Assessment Toolkit as Baltimore. The rating, the path and the casualties are the survey's and can change while it is revised. The Storm Prediction Center compiles the official record of 2026 from these surveys and publishes it in the spring of 2027; this page moves to that tornado's permanent address when it does.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mph
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.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
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.

The survey

Rating, as surveyed: EF0, preliminary
Date: August 10, 2026
Touchdown: 4:39 PM EDT (20:39 UTC)
Lifted: 4:45 PM EDT (20:45 UTC)
On the ground: 6 minutes
Path length: 1.9 miles (3.0 km)
Path width: 90 yards (82 m)
Deaths: 0
Injuries: 0
County: Baltimore County
Touchdown point: 39.256, -76.550
Lift-off point: 39.266, -76.517
Highest wind the damage implies: 65 mph
Surveyed by: NWS LWX
The office's name for it: Baltimore
Survey last edited: August 13, 2026
Record number: None yet. SPC numbers 2026 in the spring of 2027.

What the survey found

Survey Summary:

On Tuesday, August 11, 2026, the National Weather Service

Baltimore/Washington Weather Forecast Office sent a team to the

City of Baltimore and Baltimore County to survey storm damage

from thunderstorms that occurred on August 10, 2026. Additionally,

several videos from trusted sources were received and analyzed,

along with weather radar and eyewitness reports.

Video taken from the Johns Hopkins Bayview Medical Center shows a

brief circulation, likely a waterspout, over the Patapsco River

moving towards the Seagirt Marine Terminal, Port of Baltimore. As

the waterspout moved onshore, it became tornadic, and continued

east-northeast toward Broening Highway where a large hardwood

tree was uprooted and another hardwood tree was snapped. The

tornado crossed Colgate Creek and a power pole was snapped along

Ralls Avenue just east of Colgate Creek. The tornado continued to

track east-northeast and a vehicle was displaced around Sollers

Point Road in Dundalk. A tree was also uprooted in this area and

an awning was ripped off an apartment as well. The tornado

dissipated around this area. The FAA Terminal Doppler Weather

Radar for Thurgood Marshall BWI Airport (TBWI) showed a tornadic

signature along this path, corroborating the damage observations.

Based on radar observations from nearby TBWI and damage on the

ground, it was determined that an EF-0 tornado, with a maximum

velocity of 65 MPH, path width of 90 yards, and a path length of

2.0 miles occurred Monday afternoon in the City of Baltimore and

Baltimore County.

The National Weather Service thanks trained spotters, media, and

local emergency officials for their assistance in this survey.

Written by NWS LWX in the NWS Damage Assessment Toolkit. A survey is revised as better evidence arrives.

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

The county was under a severe thunderstorm watch, issued at 17:15 UTC and running to 21:58 UTC.

Issued (UTC)	Expired	Product	Office
17:15 UTC	21:58 UTC	Severe Thunderstorm Watch	LWX
19:48 UTC	21:14 UTC	Marine Warning	LWX

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk. The outlook in force was issued at 19:20 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Washington/Dulle, VA (KIAD), 12:00Z

8.7 hours before the tornado, 82 km from the path. August 10, 2026.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.

Mixed-layer CAPE: 682 J/kg
Mixed-layer CIN: -91 J/kg
Surface CAPE: 741 J/kg
Mixed-layer LCL: 1254 m above ground
0-6 km bulk shear: 29 kt
0-1 km bulk shear: 15 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.6
0-3 km lapse rate: 5.6 K/km

Open this sounding in Storm Lab

Washington/Dulle, VA (KIAD), 00:00Z

3.3 hours after it, 82 km from the path. August 11, 2026.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -370 J/kg
Surface CAPE: 171 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 38 kt
0-1 km bulk shear: 16 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 4.3 K/km

Open this sounding in Storm Lab

The surface observations

Baltimore Inner Harbor (DMH), 7 km from the path, in the two hours either side.

Time (UTC)	Temp (°F)	Dew point (°F)	Pressure (mb)
18:53 UTC	89	70	1014.2
19:53 UTC	88	73	1013.5
20:53 UTC	75	70	1015.9
21:53 UTC	73	71	1014.6

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Sterling radar (KLWX), 88 km away, was scanning. The volume nearest the touchdown began at 20:40 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)	Report	Where	County	Remark
19:26 UTC	TSTM WND DMG	1 Ese Bel Air	Harford, MD	Tree down near Dixie Dr and Vaughn Ave
19:26 UTC	TSTM WND DMG	2 Ese Bel Air	Harford, MD	Tree down along the 1400 block of Saratoga Dr
19:58 UTC	TSTM WND DMG	1 Ne Mount Airy	Carroll, MD	A tree fell onto a house along North Main Street
20:00 UTC	TSTM WND DMG	Westminster	Carroll, MD	Several reports of trees down
20:05 UTC	TSTM WND DMG	Sykesville	Carroll, MD	Several reports of trees down
20:08 UTC	TSTM WND DMG	1 Sse Rockville	Montgomery, MD	* 1 Inj * Tree down onto a house on the 10 block of Maxim Ln. 1 injury.
20:10 UTC	TSTM WND DMG	Gaithersburg	Montgomery, MD	Several reports of trees down
20:12 UTC	TSTM WND DMG	1 N West Friendship	Howard, MD	MD 32 was closed by Old Frederick Road due to fallen trees.
20:12 UTC	TSTM WND DMG	Gaithersburg	Montgomery, MD	10 large cedar trees snapped down
20:15 UTC	TSTM WND DMG	Marriottsville	Howard, MD	A tree was down along Marriottsvilele Road and it was blocking the train track.
20:16 UTC	TSTM WND DMG	1 Sse West Friendship	Howard, MD	* 1 Inj * A tree fell onto a car along the 12000 block of Ericole Court resulting in an injury.
20:17 UTC	TSTM WND DMG	2 Nw Columbia	Howard, MD	Collapsed tree onto a home in the 10800s block of Beech Creek Drive.
20:19 UTC	TSTM WND DMG	2 Nw Columbia	Howard, MD	Numerous trees were down for about a half mile stretch around Haprers Farm Road and Twin Rivers Road
20:20 UTC	TSTM WND DMG	Rockville	Montgomery, MD	Several reports of trees down
20:21 UTC	TSTM WND DMG	2 Ene Columbia	Howard, MD	A tree fell along Golamber Garth Road.
20:21 UTC	TSTM WND DMG	2 Nw Columbia	Howard, MD	A car fell onto a vehicle along Eliots Oak Road and Hesperus Drive.
20:21 UTC	TSTM WND DMG	2 Nw Columbia	Howard, MD	Collapsed tree onto home near the 10700 block of Faulkner Ridge Circle.
20:21 UTC	TSTM WND DMG	2 Nw Historic Ellicott	Howard, MD	Route 29 southbound at Interstate 70 was down to one lane due to a downed tree.
20:21 UTC	TSTM WND DMG	2 Wnw Columbia	Howard, MD	A tree fell onto a house along Rock Coast Road.
20:21 UTC	TSTM WND DMG	2 Wnw Randallstown	Baltimore, MD	A tree fell onto power lines along Wilmar Avenue and Liberty Road.
20:22 UTC	TSTM WND DMG	1 Wnw Columbia	Howard, MD	Large tree down in the College Square neighborhood in Columbia, MD.
20:23 UTC	TSTM WND DMG	Owings Mills	Baltimore, MD	There were three reports for trees down around Owings Mills.
20:24 UTC	TSTM WND DMG	2 Nnw Columbia	Howard, MD	A tree fell onto a house along Open Window Court.
20:25 UTC	TSTM WND DMG	Glenmont	Montgomery, MD	Several reports of trees down onto wires
20:25 UTC	TSTM WND DMG	Kensington	Montgomery, MD	Several reports of trees down onto wires
20:26 UTC	TSTM WND DMG	2 E Columbia	Howard, MD	A tree was down along Old Montgomery Road.
20:26 UTC	TSTM WND DMG	3 Wsw Elkridge	Howard, MD	MD 108 at Lark Brown Road was closed due to downed trees.
20:26 UTC	TSTM WND DMG	Reisterstown	Baltimore, MD	There were three reports for trees down that were blocking roadways around Reisterstown.
20:28 UTC	TSTM WND DMG	1 W Randallstown	Baltimore, MD	A tree fell onto power lines.
20:31 UTC	TSTM WND DMG	3 N Pumphrey	Baltimore City, MD	Multiple trees down in the City of Baltimore.
20:35 UTC	TSTM WND DMG	1 W Catonsville	Baltimore, MD	A tree fell onto power lines along Hilltop Road.
20:35 UTC	TSTM WND DMG	2 Ssw Arbutus	Howard, MD	Interstate 895 southbound was closed due to downed trees just past US 1.
20:35 UTC	TSTM WND DMG	2 Sw Cockeysville	Baltimore, MD	A tree was down blocking all lanes of traffic along West Padonia Road and Longshore Road.
20:35 UTC	TSTM WND DMG	2 W Darlington	Harford, MD	Tree down near Hughes Rd and Cedar Church Rd
20:35 UTC	TSTM WND DMG	Catonsville	Baltimore, MD	There were six reports for trees down around Catonsville.
20:35 UTC	TSTM WND DMG	Pikesville	Baltimore, MD	There were two reports of trees down in Pikesville.
20:35 UTC	TSTM WND DMG	Woodlawn	Baltimore, MD	There were five reports for trees down around Woodlawn.
20:39 UTC	MARINE TSTM WIND 56	1 Wnw Fells Point	Baltimore City, MD	Wind gusts of up to 49 knots (56 MPH) were measured by a personal weather station (KMDBALTI493) adjacent to the tidal Patapsco River between 4:39 and 4:49 PM EDT.
20:39 UTC	TORNADO	1 W Dundalk	Baltimore, MD	EF-0 tornado confirmed. 439pm start 445pm end. Path 1.9 miles. Max width 90 yards. Peak wind 65 mph.
20:40 UTC	TSTM WND DMG	3 Nnw Rockville	Montgomery, MD	Tree down onto Metro Red Line tracks just south of the Shady Grove Metro Station

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the track Every 2026 tornado in Maryland Every tornado in Maryland since 1950 Warnings in force in Maryland now The forecast where you are

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. A survey can be revised, so the rating, the path and the casualties can all still change.

Sources

NWS Damage Assessment Toolkit, the record the survey teams file from the damage, and NOAA Storm Prediction Center storm reports. Neither is the official database for 2026, which SPC publishes in the spring of 2027.