Strong low pressure emerged from the Lower Mississippi Valley and rode up the Ohio Valley on April 14th. Destablization was able to occur as a dry slot formed behind morning rain, with CAPE building up to around 1500 J/kg.  Also, 70-80 knots of effective bulk shear was able to organize convective updrafts and allow for some storm rotation.  Convection quickly organized into a linear structure ahead of a cold front as it crossed southeast Ohio during the late afternoon, reaching the PA/OH border around 7:00 PM and the Laurel Highlands by 10:00 PM.
For this event, the tornado risk was perceived to be relatively high, with the Storm Prediction Center forecasting numeric probabilities in the vicinity of the Ohio River that were of an unusually high level.  Two brief EF0 tornadoes were confirmed in Venango County, PA.  Otherwise, straight-line wind damage was the primary impact, with a few reports of large hail as well.

Funnel Cloud in VENANGO, PENNSYLVANIA
From 14-APR-19 18:43:00 to 14-APR-19 18:43:00 (EST-5)
Location: DEMPSEYTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public observer noted two distinct funnel clouds during the passage of a thunderstorm.  The second funnel was larger and likely corresponds to the confirmed tornado in the Baker Road area. A second observer along Wilbea Lane also noted this second funnel cloud.

Hail in MERCER, PENNSYLVANIA
From 14-APR-19 18:30:00 to 14-APR-19 18:30:00 (EST-5)
Location: STONEBORO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in VENANGO, PENNSYLVANIA
From 14-APR-19 18:43:00 to 14-APR-19 18:43:00 (EST-5)
Location: DEMPSEYTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in VENANGO, PENNSYLVANIA
From 14-APR-19 18:30:00 to 14-APR-19 18:30:00 (EST-5)
Location: COOPERSTOWN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tornado in VENANGO, PENNSYLVANIA
From 14-APR-19 18:43:00 to 14-APR-19 18:45:00 (EST-5)
Location: FRANKLIN FISHER ARPT
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A brief EF0 tornado was documented from along Bowman Road to along
Baker Road. A concentrated swath of tree damage was identified along
its path, with considerable snapping of hardwood limbs and
several hardwood trunks. Damage appears to have ceased before the
storm crossed Route 417. Peak winds were estimated to be between 75 and 80 MPH.

Tornado in VENANGO, PENNSYLVANIA
From 14-APR-19 18:53:00 to 14-APR-19 18:55:00 (EST-5)
Location: PETROLEUM CENTER
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A brief, weak tornado occurred along Pioneer Road and Shreve Road.
Damage was limited to snapping of large branches from mature
hardwood trees. A few younger hardwood tree trunks also were
snapped. Peak winds were estimated to be between 65 and 70 MPH.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 14-APR-19 17:05:00 to 14-APR-19 17:05:00 (EST-5)
Location: NESHANNOCK
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

County law enforcement reported that wind gusts blew power lines down on to State Route 62, closing the road for a time.

Thunderstorm Wind in MERCER, PENNSYLVANIA
From 14-APR-19 18:26:00 to 14-APR-19 18:26:00 (EST-5)
Location: NEW VERNON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Multiple trees were reported to be blown down across Goddard State Park.

Thunderstorm Wind in LAWRENCE, PENNSYLVANIA
From 14-APR-19 18:30:00 to 14-APR-19 18:30:00 (EST-5)
Location: NEW CASTLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The New Castle Fire Department reported that trees and power lines were blown down in town.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:39:00 to 14-APR-19 18:39:00 (EST-5)
Location: GALLOWAY CITY
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A narrow swath of focused damage was encountered near Palmer Avenue and an adjacent cemetery.  A power pole was snapped at a nearby softball field, and substantial tree damage was encountered beginning along Palmer Avenue, where hardwood limbs were snapped, and softwood trees were snapped or uprooted entirely.  Damage resembled that of a QLCS mesovortex tornado, but there was insufficient evidence to arrive at a decisive cause.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:48:00 to 14-APR-19 18:48:00 (EST-5)
Location: BRADLEYTOWN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

County 911 officials reported that trees and power lines were blown down along White Road.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:50:00 to 14-APR-19 18:50:00 (EST-5)
Location: WALNUT BEND
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

County 911 officials reported that trees were blown down along Grandview Road.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:55:00 to 14-APR-19 18:55:00 (EST-5)
Location: PLEASANTVILLE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Park/Forest Service

Oil Creek State Park reported that trees were blown down along the bike path in the park.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:58:00 to 14-APR-19 18:58:00 (EST-5)
Location: PLEASANTVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A focused swath of tree damage in the form of snapped limbs and trunks was discovered in a private grove off of Enterprise Road.

Thunderstorm Wind in CLARION, PENNSYLVANIA
From 14-APR-19 19:12:00 to 14-APR-19 19:12:00 (EST-5)
Location: PLUM ROCK
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

County 911 officials reported that single trees were blown down on North Riverview Drive in Hovey Township, as well as Gibson Road in Beaver Township.

Thunderstorm Wind in CLARION, PENNSYLVANIA
From 14-APR-19 19:35:00 to 14-APR-19 19:35:00 (EST-5)
Location: HUEY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A local fire department reported that trees and power lines were blown down along Cherry Run Road.

Thunderstorm Wind in FOREST, PENNSYLVANIA
From 14-APR-19 19:35:00 to 14-APR-19 19:35:00 (EST-5)
Location: MUZETTE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

The county department of highways reported that three trees were blown down in Muzette, near Guitonville.

Thunderstorm Wind in INDIANA, PENNSYLVANIA
From 14-APR-19 20:45:00 to 14-APR-19 20:45:00 (EST-5)
Location: CLAYPOOLE HGTS
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were blown down near the intersection of College Lodge Road and Water Street according to the county emergency manager.

Thunderstorm Wind in INDIANA, PENNSYLVANIA
From 14-APR-19 21:00:00 to 14-APR-19 21:00:00 (EST-5)
Location: LOVEJOY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The county emergency manager reported that trees were blown down on to Route 286.

Thunderstorm Wind in INDIANA, PENNSYLVANIA
From 14-APR-19 21:03:00 to 14-APR-19 21:03:00 (EST-5)
Location: HILLSDALE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

According to the county emergency manager, a tree was blown down on the road at the intersection of Hemlock and Churchill Roads.

Thunderstorm Wind in INDIANA, PENNSYLVANIA
From 14-APR-19 21:08:00 to 14-APR-19 21:08:00 (EST-5)
Location: GIPSY
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Emergency Manager

The county emergency manager reported a downed tree blocking the road at the intersection of Williams Road and Logan Road.

Thunderstorm Wind in VENANGO, PENNSYLVANIA
From 14-APR-19 18:38:00 to 14-APR-19 18:38:00 (EST-5)
Location: FRANKLIN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

County 911 officials stated that a roof was blown off of a business in the city of Franklin.

Thunderstorm Wind in BEAVER, PENNSYLVANIA
From 14-APR-19 18:31:00 to 14-APR-19 18:31:00 (EST-5)
Location: ALIQUIPPA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A wind gust of 60 MPH was estimated, with some small tree limbs broken.