The following events were reported: Tornado. These occurred near station USW00094823, approximately 34.163 km away, between 2021-10-21 17:56:00 and 2021-10-21 19:10:00.Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 8375000.0 and crop damage of 100000.0. Episode Narrative: A broken line of supercells, which formed along a front, moved quickly through the Ohio River Valley the evening of October 21st and spun off several tornadoes. The number of tornadoes, time of year, and intensity (one long track EF2 tornado) will mark this event as very rare and significant for this region. ||Prior to tornado development, surface temperatures warmed into the low-mid 60s; dew points topped out near 60F. Forecast soundings indicated modest levels of mean layer CAPE, and a relatively straight hodograph yielding marginal but sufficient storm relative helicity. The overall quick track of the broken line and eastward propagation helped cells sustain rotating updrafts. A broken line of supercells, which formed along a front, moved quickly through the Ohio River Valley the evening of October 21st and spun off several tornadoes. Event Narrative: A NWS damage survey confirmed that an EF-2 tornado, with winds|peaking near 130 MPH, tracked through western Washington County|on the evening of October 21, 2021. The length was over 15 miles|long and the width varies in some areas but the maximum was between 600 |to 700 yards. This tornado was associated with the same circulation |that initially produced a tornado in Jefferson County, Ohio earlier. ||Weak tornado damage was first noted along Brashears Run Road with|a few fallen trees. The storm rapidly intensified along Indian |Camp Rd, where a mobile home had roof damage and a well-structured|deck was ripped and tossed into the neighbors yard. Many trees |were snapped and uprooted as well. Damage in this area was |consistent with winds speeds of 90-95 MPH.||The tornado continued east towards Hopewell Township. Noted roads|that had tree and structure damage, associated with EF-1 damage, |were along Short Cut Road, Scenic Drive, Raccoon Run Road, Possum Hollow|Road, Old Trail Road, Jefferson Avenue, Park View Drive, and |Oakleaf Road.||Peak intensity was reached near Willow Road and Lowry|Lane where a two story home had a roof completely torn off and |tossed about 100 feet and a few portions of the walls collapsed. |With closer inspection, a few of the foundation blocks were |shifted on both sides of the house. Peak wind was near 130 MPH in |this region. A few hundred feet away a farm building was |completely destroyed. As the tornado crossed Lynn Portal Road and |advanced along White Lane, a solid brick home lost the roof and |the attached garage. ||The tornado started to weaken, but still continued to hold near |100 MPH winds, as it tracked across McCarrell Road, Western Ave, |and towards the outskirts of the city of Houston, PA. The tornado |appears to have dissipated near North Main Street and Pine Ave |north of Houston, PA.||At least $600,000 of damage was noted by PEMA to four different structures.|The total cost of destruction was estimated by the NWS Storm Surveyor. A damage survey confirmed that a brief tornado occurred in and|near the Mount Nebo Pointe shopping center. Damage at the Target|store included broken glass in the entry doors (which were sucked|outward by the wind), as well as damage to a sign on the west-|facing side of the store. Minor tree damage and tall grass|blowdown was noted on the eastern side of the shopping center and|tree damage was noted at the base of the hill on the western|side. The circulation lifted very soon after as it reached a|small gully to the east. Damage indicators were consistent with a|maximum wind speed of 70 MPH during this brief event. A damage survey confirmed that a tornado tracked across the|southern portion of Hampton Township, PA. This tornado was|associated with the same circulation that initially produced a|brief tornado earlier in Mount Nebo. Damage was first noted in the|area of Auld and Forest Avenues, in the form of light structural|damage to homes. The tornado strengthened on Linden Drive, with|several snapped hardwood and softwood trees, as well as the|uplift of a roof. Damage in this area was consistent with wind|speeds of 90 to 95 MPH. Snapped and uprooted trees were seen as|the tornado continued across Parkview Lane and then to Duncan|Avenue. Farther east, in the Church Hill area, snapped and|uprooted trees were observed, with one large tree on a house on|Cole Avenue, and some other minor structural damage where Cole|intersects with Miller Avenue as well as Cella Lane, representing|a rough tornado track width of 200 yards. The tornado weakened|considerably after it crossed Route 8 and into Bryant, before|causing more damage in the vicinity of Middle Road. Widespread|snapped hardwood trees were seen between John Giel Drive and|Green Valley Drive, and a cinder-block outbuilding was destroyed,|with debris being blown downwind 1/4 mile. Damage here was|consistent with 100 to 105 MPH wind. Tree damage continued ENE|into Hartwood Acres Park and then to Dorseyville Road, where the|damage path finally ended as the tornado dissipated. NWS|Pittsburgh is grateful to  Hampton Township and Allegheny County|EMA for their assistance with this damage survey.||Damage cost was estimated using information from the local emergency manager. The National Weather Service in Pittsburgh conducted a storm|survey in far northern Beaver County just northeast of New Galilee.|The damage was confined along either side of Fairlane Boulevard / |State Route 351. Majority of the damage was hardwood and softwood |trees missing large branches. One softwood tree was uprooted, which |was the damage indicator that warranted the EF1 rating. One of the |large branches fell onto a detached garage causing damage to the |roof. The tornado lifted prior to reaching the intersection of State |Route 351 and Big Beaver Boulevard. A NWS damage survey confirmed that an EF-1 tornado, with winds|speeds ranging between 90 to 95 MPH, tracked through portions of|Peters Township in Washington County on the evening of October|21, 2021. The length was 1.5 miles and the width in some areas|was about 100 to 200 yards. This tornado was associated with the same |circulation that initially produced an EF-1 tornado in Jefferson |County, OH and an EF-2 in Hopewell Township a few miles to the |west. ||A few broken branches were noted along Thomas Road near|Peters Lake Park. However, the tornado quickly intensified as it|cross Hill Place Road. Trees were uprooted and snapped in the|vicinity of Springdale Road and Sunrise Lane. A number of new and|well-structured brick homes had window damage, a garage blown|out, shingle damage, and trees snapped. The tornado weakened and|dissipated just west of Bower Hill Road.||A detailed review by PEMA noted damage to 4 homes on Hill Place Road, |5 homes on Sunrise Road, 5 homes on Springdale Road, 1 home on |Buckingham Drive, and 2 homes on Sienna Trail. |||Damage cost was estimated by NWS Storm Surveyor. The National Weather Service in Pittsburgh conducted a storm survey |in far northeastern Beaver County in Franklin Township eastward to |Harmony Township, Butler County. The damage, much like previous ones |for this event, was regulated to hardwood and softwood trees. There |was no structure damage observed along the track. ||Damage initially started on American School Road then east along |North Camp Run Road. The most intense damage was recorded farther |down American School Road where at least 30 hardwood trees were |uprooted or had large branches blown down. As the tornado continued down |American School Road, downed softwood trees and hardwood trees snapped |at the trunk were observed. The tornado lifted as it crossed into |Butler County just beyond the intersection of American School Road |and Scott Ridge Road. A damage survey confirmed a discontinuous tornado path causing|sporadic tree damage of varying intensity as it tracked across|central Butler County. The most significant damage was noted|along Woodcrest Road, where numerous trees were snapped or|uprooted and flagpoles were bent over by the wind. Damage was|consistent with wind up to 80 mph. This tornado was part of a|radar-indicated circulation that began in Beaver County. A NWS damage survey, conducted both by ground and aerial drone, |confirmed that an EF-1 tornado, with speeds ranging between 80 and|90 mph, tracked through eastern portions of East Finley township |on the evening of October 21, 2021. The tornado initially touched |down on open farmland approximately 0.4 miles west of Quaker Ridge|road, where drone footage discovered damage to several trees |along opposing tree lines, with a distinct scouring pattern |observed in the open pasture between them. The tornado continued |eastward through wooded area, producing the most significant |damage to a cluster of trees along Quaker Ridge Road adjacent to |the parking area for Pennsylvania State Games lands. At least 10 |mature trees of up to 8 inches in diameter were snapped anywhere |from 1/4 to 3/4 of the way up the trunk line. The tornado |continued east across Quaker Ridge road into the woodlands for |another 100 ft, producing lesser tree damage until dissipating. |This damage is coincident with a strong radar signature from both |the NWS Pittsburgh and Pittsburgh International Airport Doppler |radars. A thorough survey of the area several miles west and east |of this tornado yielded no additional damage. This is a continuation of the tornado track that began in Franklin Township, Beaver County. The summary of the full tornado path is included below.||The National Weather Service in Pittsburgh conducted a storm survey |in far northeastern Beaver County in Franklin Township eastward to |Harmony Township, Butler County.