An upper level trough east of the Mississippi River on the morning of April 26th deepened and closed off over the eastern Great Lakes by the morning of April 27th. A forced convective line was ongoing in the morning hours of April 26th over West Virginia and progressed eastward into Maryland during the afternoon hours. A few individual cells also formed ahead of this convective line. Modest instability developed during the late morning and early afternoon hours which helped to support showers and thunderstorms across the region, and this combined with moderate levels of wind speed shear, led to strong to severe thunderstorms which produced locally damaging winds. There was also enough low level directional shear to produce a tornado in central Maryland.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 26-APR-19 13:47:00 to 26-APR-19 13:47:00 (EST-5)
Location: GLEN
Magnitude: 50.00 EG
Reported by: Broadcast Media

A tree was blown down near the intersection of Glen Mill Road and Boswell Court.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 26-APR-19 13:55:00 to 26-APR-19 13:55:00 (EST-5)
Location: PARKWOOD
Magnitude: 50.00 EG
Reported by: NWS Employee

An 18-inch diameter oak tree was uprooted alongside the Outer Loop of I-495 Capital Beltway just west of I-270 near the Bethesda Trolley Trail.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 26-APR-19 13:55:00 to 26-APR-19 13:55:00 (EST-5)
Location: LAYTONSVILLE
Magnitude: 50.00 EG
Reported by: State Official

A tree was blown down onto wires in Laytonsville.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 26-APR-19 13:55:00 to 26-APR-19 13:55:00 (EST-5)
Location: SEABROOK
Magnitude: 70.00 EG
Reported by: State Official

Numerous trees were blown down in the Lanham area, including a few onto houses and power lines.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 26-APR-19 13:57:00 to 26-APR-19 13:57:00 (EST-5)
Location: SEABROOK
Magnitude: 50.00 EG
Reported by: Department of Highways

A tree was blown down near the intersection of Maryland Route 564 and 98th Avenue.

Thunderstorm Wind in PRINCE GEORGE'S, MARYLAND
From 26-APR-19 14:06:00 to 26-APR-19 14:06:00 (EST-5)
Location: ADELPHI
Magnitude: 50.00 EG
Reported by: NWS Employee

Two trees were blown down alongside the ramp from I-495 Capital Beltway Inner Loop to I-95 northbound.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:09:00 to 26-APR-19 14:09:00 (EST-5)
Location: OREGON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large wooden sign was blown down on Shawan Road between Falls Road and I-83.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 26-APR-19 14:17:00 to 26-APR-19 14:17:00 (EST-5)
Location: GAMBRILLS
Magnitude: 50.00 EG
Reported by: Trained Spotter

A tree was blown down onto power lines on Gambrills Road near Grace Point Church. A tree was also blown down in the 1600 block of Preakness Drive.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:19:00 to 26-APR-19 14:19:00 (EST-5)
Location: GLENCOE
Magnitude: 50.00 EG
Reported by: Trained Spotter

A tree and wires were blown down along the 15000 block of Carroll Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:21:00 to 26-APR-19 14:21:00 (EST-5)
Location: JACKSONVILLE
Magnitude: 61.00 EG
Reported by: Trained Spotter

A large tree was snapped near the intersection of Sweet Air Road and Fox Run Court.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 26-APR-19 14:40:00 to 26-APR-19 14:40:00 (EST-5)
Location: ELVATON
Magnitude: 50.00 EG
Reported by: State Official

A large tree was down blocking the intersection of Natalie Lane and Carli Court.

Thunderstorm Wind in HARFORD, MARYLAND
From 26-APR-19 14:25:00 to 26-APR-19 14:25:00 (EST-5)
Location: BLACK HORSE
Magnitude: 50.00 EG
Reported by: State Official

A pole was blown down near the intersection of Maryland Route 23 Norrisville Road and Houcks Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:31:00 to 26-APR-19 14:31:00 (EST-5)
Location: WEST LIBERTY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was blown down blocking Harris Mill Road north of intersection with Bond Road. Numerous other trees were also reported down in the area.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 26-APR-19 14:42:00 to 26-APR-19 14:42:00 (EST-5)
Location: LEONARDTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was blown down near the intersection of Maryland Route 234 and Maryland Route 5.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 26-APR-19 14:49:00 to 26-APR-19 14:49:00 (EST-5)
Location: DRUMCLIFF
Magnitude: 61.00 EG
Reported by: State Official

Four trees were blown down and three other trees were damaged near the intersection of Jones Wharf Road and Drum Cliff Road.

Thunderstorm Wind in ST. MARY'S, MARYLAND
From 26-APR-19 15:04:00 to 26-APR-19 15:04:00 (EST-5)
Location: PATUXENT RIVER
Magnitude: 54.00 MG
Reported by: ASOS

A wind gust of 62 mph (54 knots) was measured at Patuxent River Naval Air Station KNHK).

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:10:00 to 26-APR-19 14:10:00 (EST-5)
Location: SHAWAN
Magnitude: 50.00 EG
Reported by: NWS Storm Survey

One tree was blown down a quarter mile south of the intersection of Cuba Road and Gardiner Road. Two trees were also blown down and one other tree topped near the intersection of Cuba Road and Miller Road. One other tree was blown down on Western Run Road just north of Ford Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:18:00 to 26-APR-19 14:18:00 (EST-5)
Location: BLUE MT
Magnitude: 50.00 EG
Reported by: NWS Storm Survey

A tree was blown down on Big Falls Road a quarter mile south of the Gunpowder Falls Trail parking area. Three trees were also blown down in the 1600 to 1700 block of Wilson Road.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 26-APR-19 14:32:00 to 26-APR-19 14:32:00 (EST-5)
Location: HALETHORPE
Magnitude: 50.00 EG
Reported by: NWS Employee

A tree was blown down along the ramp from northbound I-95 to westbound I-695 Baltimore Beltway Inner Loop.

Tornado in BALTIMORE, MARYLAND
From 26-APR-19 14:19:00 to 26-APR-19 14:23:00 (EST-5)
Location: CORBETT
Tornado F-scale: EF1
Reported by: NWS Storm Survey

An EF-1 tornado began at 3:19 PM EDT (2:19 PM EST) on Corbett Road between Monkton Farms Drive and Falls Road, and ended at 323 PM EDT (2:23 PM EST) near the intersection of Shepperd Road and MD-562/138 Troyer Road, resulting in intermittent damage mainly to softwood trees. This time was estimated from rotational velocity signatures evident on both KLWX Sterling National Weather Service Weather Surveillance Radar (88D) and TBWI FAA Terminal Doppler Weather Radar. Several area residents noted sudden, chaotic winds around 3:20 PM EDT (2:20 PM EST). No concentrated or tornadic damage was found southwest or northeast of this location, although there was sporadic tree damage concluded to be from straight line winds throughout much of northeastern Baltimore County into northwestern Harford County.
Most of the damage was to softwood (pine) trees. On Corbett Road, two softwood (pine) trees were snapped a third of the way up on the west side of the road, and fell toward the northeast. Across the street in a wooded area, a third tree (hardwood, birch) snapped halfway up and fell toward the east. A fourth tree (softwood, pine) just to the north snapped halfway up, and fell toward the south. The pattern of the tree damage was convergent in nature, implying a circulation reached the surface at this
point. Other leaf and small branch debris was noted in the area. The damage was confined to a 100-yard wide path at this location.
The tornado continued northeastward with a forward speed of 40 to 50 mph (estimated from TBWI radar), reaching the 2400 block of Monkton Road at 3:20 PM EDT (2:20 PM EST). At this location, four pine trees snapped about halfway up, and fell toward the northeast; one small tree along the southeast side of the path snapped at the base and
fell toward the southwest; two other pine trees snapped halfway up and fell toward the north or northwest. There were also numerous large limbs scattered around this area. Damage was confined to a path that expanded slightly in width to about 125 yards.
The circulation reached JM Pearce Road just east of MD-138 Shepperd Road at 3:21 PM EDT (2:21 PM EST). At least ten trees were snapped in a 150-yard wide path here. Three trees on the northwest side of the path fell toward the south or southeast, with the rest falling toward the northwest to northeast. All of the trees that fell were softwoods (mainly pines).
At 3:22 PM EDT (2:22 PM EST), the tornado reached MD-138 Shepperd Road in the 2900 block. Over a dozen trees were snapped between the base and halfway up at this location. Additionally, half a dozen trees were topped. The trees that were snapped closer to the base were along and southeast of the roadway, and fell facing the northwest, north and northeast. The trees that had their tops snapped off were along the north side of the road, and blew south across the road onto adjacent properties. A house at a horse barn had two screens blown in toward the northeast, and the slide of a swing set on the property was torn off and blew toward the northwest. Steel barns on the property sustained no notable damage, and no shingles or siding were removed from the house.
The last instance of tornadic damage was noted at the intersection of Shepperd Road and MD-562/138 Troyer Road. Several softwood trees were snapped here, as well, facing southwest, south and southeast.
Given the intermittent tree damage (snapped trees), and the fact that very little if any structural damage was noted, it is concluded that maximum wind speeds were 80 to 90 MPH. Above this speed is when most sturdy structures start sustaining notable
damage, like substantial loss of shingles or siding, which was NOT noted anywhere along the path. No injuries or fatalities were reported in this tornado.