An isolated, cyclic supercell thunderstorm tracking along a warm front produced sporadic straight-line wind damage and spawned several tornadoes.

Thunderstorm Wind in CARROLL, MARYLAND
From 03-MAY-21 19:58:00 to 03-MAY-21 19:58:00 (EST-5)
Location: SPRINGS MILL
Magnitude: 50.00 EG
Property damage: 2.00K
Reported by: 911 Call Center

Trees were blown down along MD-27 Ridge Road near Spring Mills Road.

Tornado in FREDERICK, MARYLAND
From 03-MAY-21 19:14:00 to 03-MAY-21 19:16:00 (EST-5)
Location: MT PLEASANT
Tornado F-scale: EF0
Property damage: 150.00K
Reported by: NWS Storm Survey

A supercell thunderstorm produced a tornado during the evening
hours of Monday, May 3rd in a rural area of Frederick County, MD,
between Mt Pleasant and Libertytown. An estimated 150 trees were
uprooted, snapped or damaged along the path of the tornado that
moved in an east-northeast direction for approximately three-
quarters of a mile.
Tree damage from this tornado began near a residence in the 10800
block of Old Annapolis Road, with a few snapped large branches
that fell across Old Annapolis Road. The tornado tracked east-
northeast across a large grouping of trees between Old Annapolis
Road and Chestnut Grove Road, damaging approximately 90-100 trees
with multiple large branches snapped, trees uprooted and trunks
snapped in varying directions.
As the tornado crossed Chestnut Grove Road just north of Alton
Road, a large amount of tree damage occurred, with an estimated
40-50 trees uprooted in multiple directions while about 20 trees
were snapped. Isolated tree damage was noted outside of this path
on the southern extent of the tornado path, with a few tree snaps
noted. No structural damage was observed anywhere along the
tornado path.
As the tornado moved further east-northeast and away from
Chestnut Grove Road, it lifted, as no damage was evident or
reported along what would have been a continuation of the
tornados path. Sporadic, straight-line wind damage was noted
further northeast near Libertytown.

Thunderstorm Wind in FREDERICK, MARYLAND
From 03-MAY-21 19:23:00 to 03-MAY-21 19:23:00 (EST-5)
Location: LIBERTYTOWN
Magnitude: 55.00 EG
Property damage: 5.00K
Reported by: 911 Call Center

Trees and wires were blown down near the intersection of MD-26 Liberty Road and MD-550 Woodsboro Road/Mill Street, as well as near the intersection of MD-26 Liberty Road and MD-75 Green Valley Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 03-MAY-21 20:24:00 to 03-MAY-21 20:24:00 (EST-5)
Location: BORING
Magnitude: 50.00 EG
Property damage: 1.00K
Reported by: Emergency Manager

A tree was blown down on southbound MD-30 just north of Mount Gilead Road.

Thunderstorm Wind in CARROLL, MARYLAND
From 03-MAY-21 20:04:00 to 03-MAY-21 20:04:00 (EST-5)
Location: HOUCKSVILLE
Magnitude: 60.00 EG
Property damage: 5.00K
Reported by: Public

Several trees were topped or uprooted all facing in the same direction near the 2000 block of Browns Road.

Tornado in CARROLL, MARYLAND
From 03-MAY-21 19:47:00 to 03-MAY-21 19:48:00 (EST-5)
Location: BELLE GROVE
Tornado F-scale: EF0
Property damage: 50.00K
Reported by: NWS Storm Survey

After producing two confirmed tornadoes in Frederick County,
Maryland, a supercell thunderstorm produced another brief tornado
further east in western Carroll County, near New Windsor,
Maryland, shortly after 8:45 P.M. EDT.
The tornado damaged two farm properties on the 2200 block of
Bowersox Road. About 10 trees on the properties were uprooted in
multiple directions, one of which fell on an old barn. Some large
branches were snapped. Two outbuildings were destroyed. One was a
calf shed that was unroofed and then destroyed, killing the calf
inside with flying debris. Another small shed was similarly
unroofed and destroyed. Debris from both outbuildings was blown to
the left of the track. No damage was noted to the residential
home, and many trees among the uprooted trees were undamaged. Wind
gusts were estimated to have peaked around 80 mph. Additional,
more isolated tree damage caused by strong thunderstorm winds
existed to the left and right of the path in this area.

Tornado in FREDERICK, MARYLAND
From 03-MAY-21 19:35:00 to 03-MAY-21 19:36:00 (EST-5)
Location: UNIONVILLE
Tornado F-scale: EF0
Property damage: 100.00K
Reported by: NWS Storm Survey

After producing a confirmed tornado earlier in Frederick County,
Maryland, near Mt. Pleasant, a supercell thunderstorm produced
another brief tornado further east shortly after 8:30 P.M. EDT in
extreme east-central Frederick County, Maryland, near Unionville.
Damage from this tornado was largely confined to a farm in the
14700 block of Barnes Road that suffered tree and farm equipment
damage, and structural damage to large sheds. The tornado
initially touched down there as it entered a wooded area, carving
a clear path through a section of large trees, with most trees
falling in a convergent manner on the southwest side of a farm.
Slightly more trees were uprooted than snapped, but both were
evident.
As the tornado exited the woods it pushed over a piece of farm
equipment and scattered debris across the farm field. As it
crossed the center of the farm with the majority of the structures
and equipment, substantial damage occurred. Three large farm
sheds were severely damaged or destroyed. Farm equipment was
moved. Calf hutches were thrown north, northeast into the field.
Other sheds were damaged and had debris thrown to the southeast.
The tornado lifted as it reached the northeast end of the farm.