The following events were reported: Hail, Thunderstorm Wind, Tornado. These occurred near station USW00094823, approximately 32.8546 km away, between 2020-04-07 23:38:00 and 2020-04-08 00:40:00. The events included records with hailstones measuring 49.285714285714285 inches.Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 679000.0 and crop damage of 0.0. Episode Narrative: Broad ridging was in place across the Mississippi Valley on the morning of the 7th, with the Upper Ohio Valley region experiencing WNW flow aloft. After morning showers and thunderstorms moved across the area due to a warm front, the upper level flow regime brought an elevated mixed layer (EML) into the region during the afternoon, capping convection during the afternoon and early evening hours. ||Convective clusters over Michigan during the evening congealed into a mesoscale convective system (MCS) and raced across Lake Erie, arriving in the NWS Pittsburgh forecast area shortly before midnight. Steep mid-level lapse rates thanks to the EML allow for a few large hail reports initially. However, the main impact of the system would be from wind. Surface temperatures surged into the low to mid 60s ahead of the line on gusty southwest winds, resulting in surface CAPE of 1000 J/kg and a significant curving/lengthening of the hodograph. With the boundary layer no longer decoupled, strong ambient mid-level flow combined with highly efficient evaporational cooling in the convective downdrafts allowed substantial downdraft CAPE to be realized with surface wind gusts exceeding 70 mph observed and evident over a wide area given the volume of wind damage reports. Embedded vortices in the quasi-linear convective system also led to five tornadoes in the EF0/EF1 range during this event across the region.||Numerous instances of tree and structural damage were observed, including damage to planes and hangars at Arnold Palmer Regional Airport. Strong winds also tore off part of the roof of St. Mary of Czestochowa Church on Kenneth Avenue in New Kensington. Over 50,000 area electrical customers were without power in the wake of the storms, according to the Pittsburgh Post-Gazette. Broad ridging was in place across the Mississippi Valley on the morning of the 7th, with the Upper Ohio Valley region experiencing WNW flow aloft. Event Narrative: Many snapped trees were reported along Dehaven Road. The time of occurrence was based on radar data. Multiple trees were reported to be snapped or uprooted in the Pine Grove area. The time of occurrence was estimated based on radar data. A tree was blown down onto Mars Hill Road. A 65 knot wind gust was recorded at Pittsburgh International Airport. This is a continuation of the tornado path that began near Union Ridge in Columbiana County, Ohio.||A second damage swath coincident with a second radar-detected |circulation and distinct from the Rogers/Negley tornado above was |encountered west along Carmel Achor Road, beginning in the woods |north of the road. This path proceeded south-southeastward with |continuous limb damage and occasional stronger gusts leading to |uprooted trees. Structural damage encountered along this segment |of the path seems to have resulted from falling trees rather than |wind.||The track curved eastward along Pancake Clarkson Road, crossing at|into Beaver County, PA at the Pennsylvania state line, where it |appears to have intensified and widened slightly. In this |location, numerous evergreen trees were snapped or uprooted in the|Sheepskin Hollow State Nature Preserve.||The circulation weakened quickly thereafter, with occasional tree|damage continuing to near Lihi Road and Lisbon Road in Beaver|County before evidence of a path disappeared altogether. A large pine was uprooted and fell on to a garage at 615 Wayne Avenue. Trees were reported to be blown down and roof damage occurred near Crest Street. A trampoline was also moved a distance. Time of occurrence based on radar data. Trees were blown down onto Willowbrook Road in Rostraver Township. A PennDOT sensor at exit 60 on I-79 north measured a wind gust of 60 knots. Shingle damage to a roof was reported, with many broken limbs in the area as well. The time of occurrence was base on radar data. Tree and roof damage was reported near Michael Road. A tree was blown down onto a residence in West Newton. A wind gust of 53 knots was measured by the ASOS at Allegheny County Airport. A tree was reported to blown down onto a residence. A tree was reported to be blown down onto a residence near Center New Texas Road. Many trees were downed on a farm at 132 Shadyrest road. Seven to eight healthy trees and 3 dead trees were blown down, with one falling on a garage. Roof damage was reported to three homes near State Route 366, with several trees blown down around the area. Numerous trees were reported to be downed in Elizabeth. One playhouse was blown over 100 yards away. A tree was blown down on to a house on Ellen Avenue. A roof was blown off of a church at 221 Ridge Avenue, with the resulting damage blocking the roadway. A 40 foot tall pine tree fell on to a residence at 600 Wampum Avenue. No injuries were reported. A house on Willowmere Park Road collapsed on its foundation. A tree fell into a home along Crawford Run Road in Frazer Township. Numerous trees and wires were blown down in New Kensington. A porch roof was blown off on Robinson Drive. A large tree was blown down in a yard, and power lines were also downed around the area of the border between Mount Lebanon and Castle Shannon. The roof was blown off of St. Mary of Czestochowa in New Kensington. This is a continuation of the tornado that originated near Tarentum in Allegheny County.||After the tornado exited Allegheny County, modest damage continued sporadically across the river, where tree limbs and a power pole were snapped in a neighborhood behind Riverview Plaza. The last noted tree damage was along Leechburg Road north of Tarentum Road, at which point the circulation appears to have weakened below the damaging threshold. Trees were reported to be blown down, completely blocking Orchard Road between Houston Road and State Route 551. Time estimated based on radar. A house was blown off its foundation about one mile north of Sunflower Corner. Time of occurrence was estimated based on radar data. A large trees was blown down on to a house in Crafton. A tree fell on a residence and a vehicle at 834 Crescent Avenue. Trees were heard to be falling in the woods adjacent to the National Weather Service office. Continuous wind gusts to 70 MPH were observed for almost 10 minutes. A tree was reported to be blown down in McMurray. A member of the public reported that several trees were blown down in their yard, one of which hit their house. First Union Methodist Church at 416 Crescent Avenue was reported as having structural damage. The roof of the bell tower, measuring 20 feet by 20 feet, was blown off and thrown approximately 100 yards onto Bell Avenue. Tree limbs were reported to be blown down and siding was torn off of a house. Parts of a brick storefront were brought down in Clairton. A member of the public reported widespread damage to trees, fences, awnings, and other structures near Tarentum. In the area of State Route 18 near Wampum, numerous trees and utility poles were reported to be blown down. Seven large trees were reported to be blown down at 127 Blue Valley Drive. A roof was blown off of a building on Constitution Boulevard near CTS Services. A tree was reported to be downed on a home near Beaver County Airport. Multiple trees and power lines were reported to be blown down across the area of Sewickley. The tops of trees were snapped off in Penn Hills. Time of occurrence was estimated using radar. Wires were reported to be blown down at the intersection of South 2nd Street and Knoll Avenue. A large tree was reported to be uprooted near Duncan Avenue. The time of occurrence was based on radar. In Cecli, trees and power lines were reported to be blown down, creating power outages. Trees were reported to be blown down along County Route 780. A building was reported to be leveled in Ellwood City, with an additional report of another commercial building with a roof ripped off. A tree was reported to be downed at the intersection of Coraopolis Road and Route 51. Downed trees and penny-sized hail were reported on Edgewood Lane. Multiple trees and power lines were reported to be down around Northmoreland Park. A brief tornado was documented along Riverview Street in |Lower Burrell. A narrow path consisting mainly of snapped and |uprooted trees and limbs was encountered. Additionally, modest |damage to shingles and fences was noted. Supporting the presence |of a strong circulation, splatter of mud, pine needles and debris |was discovered on the east-facing side of affected homes, and |downwind lawn furniture and trampolines were lofted and deposited |upwind from their initial locations.||Wind was fairly focused, with damage consistent with 70 mph wind |gusts. This brief tornado was associated with a second |mesovortex/updraft distinct from the Tarentum/New Kensington |tornado. Numerous trees down on the following roads: Willowbrook Drive, Willowbrook Drive West, Bielers Run Road, Tuscarawas Road, Westwood Drive, Salem Church Road, Ridgemont Road, Engle Road, Lynwood Drive, and Whitehead Road. Numerous trees were reported to be blown down at Shannopin Country Club. Numerous trees were reported to be blown down along Vernon Road in Rostraver Township. A mesovortex intensified rapidly and produced a tornado as its |parent storm descended the terrain northwest of Tarentum into the |Allegheny River valley. The tornado began in the woods between |Bakerstown Road and Days Run Road and rapidly intensified near |Days Run Road and Holsing Lane, where a vast number of softwood |and hardwood trees were snapped, blocking Days Run Road, and with |some falling onto homes. Additionally in this location, windows in|a home were blown in by the tremendous wind. ||A swath of tree damage, likely to be the result of straight-line |wind, extends northwest from the Holsing Road area where it |intersects the tornado damage track. This wind likely was just as |strong (if not stronger) than the tornado itself. ||The tornado slowly weakened as the storm continued southeastward, |with a path of snapped limbs and occasional trunks continuing to |along Bakerstown Road near the Broadview section before continuing|across Route 28. Modest building/carport damage was reported in |Tarentum along Sixth Ave coincident with the passage of the |weakening circulation. The tornado then crossed the Allegheny River into Westmoreland County.