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Storm Events Database
Event Details:
| Event | Tornado |
| -- Scale | EF0 |
| -- Length | 0.86 Miles |
| -- Width | 100 Yards |
| State | PENNSYLVANIA |
| County/Area | BEAVER |
| WFO | PBZ |
| Report Source | NWS Storm Survey |
| NCEI Data Source | CSV |
| Begin Date | 2020-04-07 23:40 EST-5 |
| Begin Location | 4WNW BLACKHAWK |
| Begin Lat/Lon | 40.7472/-80.519 |
| End Date | 2020-04-07 23:41 EST-5 |
| End Location | 3WNW BLACKHAWK |
| End Lat/Lon | 40.738/-80.508 |
| Deaths Direct/Indirect | 0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect | 0/0 |
| Property Damage | |
| Crop Damage | |
| 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. |
| Event Narrative | 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. |
Event Map:
Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
All events for this episode:
| Location | County/Zone | St. | Date | Time | T.Z. | Type | Mag | Dth | Inj | PrD | CrD |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals: | 0 | 0 | 993.00K | 0.00K | |||||||
| PLEASANTVILLE | VENANGO CO. | PA | 04/07/2020 | 22:35 | EST-5 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| CHERRYTREE | VENANGO CO. | PA | 04/07/2020 | 22:45 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| TRUNKEYVILLE | FOREST CO. | PA | 04/07/2020 | 22:47 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| BROOKVILLE | JEFFERSON CO. | PA | 04/07/2020 | 22:50 | EST-5 | Hail | 0.88 in. | 0 | 0 | 0.00K | 0.00K |
| BROOKVILLE | JEFFERSON CO. | PA | 04/07/2020 | 22:54 | EST-5 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| CHARLESTON | MERCER CO. | PA | 04/07/2020 | 22:59 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| NESHANNOCK | MERCER CO. | PA | 04/07/2020 | 22:59 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.50K | 0.00K |
| SHARPSVILLE | MERCER CO. | PA | 04/07/2020 | 22:59 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| WALMO | LAWRENCE CO. | PA | 04/07/2020 | 23:10 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| EDINBURG | LAWRENCE CO. | PA | 04/07/2020 | 23:31 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| EDINBURG | LAWRENCE CO. | PA | 04/07/2020 | 23:31 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| WALMO | LAWRENCE CO. | PA | 04/07/2020 | 23:35 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 0.50K | 0.00K |
| ENON | LAWRENCE CO. | PA | 04/07/2020 | 23:38 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/07/2020 | 23:39 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| BLACKHAWK | BEAVER CO. | PA | 04/07/2020 | 23:40 | EST-5 | Tornado | EF0 | 0 | 0 | 0.00K | 0.00K |
| COVERDALE | LAWRENCE CO. | PA | 04/07/2020 | 23:40 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 3.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/07/2020 | 23:40 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BEAVER FALLS CO ARPT | BEAVER CO. | PA | 04/07/2020 | 23:42 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/07/2020 | 23:42 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 2.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/07/2020 | 23:43 | EST-5 | Thunderstorm Wind | 60 kts. EG | 0 | 0 | 30.00K | 0.00K |
| BLACKHAWK | BEAVER CO. | PA | 04/07/2020 | 23:44 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/07/2020 | 23:44 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| OHIOVILLE | BEAVER CO. | PA | 04/07/2020 | 23:44 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| UNIONVILLE | BEAVER CO. | PA | 04/07/2020 | 23:45 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 3.00K | 0.00K |
| NEW BRIGHTON | BEAVER CO. | PA | 04/07/2020 | 23:46 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| FRISCO | BEAVER CO. | PA | 04/07/2020 | 23:48 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 15.00K | 0.00K |
| STOBO | BEAVER CO. | PA | 04/07/2020 | 23:50 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| UNIONVILLE | BEAVER CO. | PA | 04/07/2020 | 23:50 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 50.00K | 0.00K |
| ZELIENOPLE | BUTLER CO. | PA | 04/07/2020 | 23:50 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| SUNFLOWER | BEAVER CO. | PA | 04/07/2020 | 23:54 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 50.00K | 0.00K |
| CARNOT | ALLEGHENY CO. | PA | 04/08/2020 | 00:00 | EST-5 | Thunderstorm Wind | 60 kts. EG | 0 | 0 | 0.00K | 0.00K |
| LOVI | BEAVER CO. | PA | 04/08/2020 | 00:00 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| SHAFERS | BEAVER CO. | PA | 04/08/2020 | 00:00 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| SEWICKLEY | ALLEGHENY CO. | PA | 04/08/2020 | 00:03 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ALLISON PARK | ALLEGHENY CO. | PA | 04/08/2020 | 00:04 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| (PIT)GTR PITTSBURGH | ALLEGHENY CO. | PA | 04/08/2020 | 00:06 | EST-5 | Thunderstorm Wind | 65 kts. MG | 0 | 0 | 0.00K | 0.00K |
| EMSWORTH | ALLEGHENY CO. | PA | 04/08/2020 | 00:06 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| KENMAWR | ALLEGHENY CO. | PA | 04/08/2020 | 00:06 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| FOREST GROVE | ALLEGHENY CO. | PA | 04/08/2020 | 00:08 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| MAGILL HGTS | ALLEGHENY CO. | PA | 04/08/2020 | 00:09 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| MAGILL HGTS | ALLEGHENY CO. | PA | 04/08/2020 | 00:10 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ELLWOOD CITY | LAWRENCE CO. | PA | 04/08/2020 | 00:11 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| MILLERSTOWN | ALLEGHENY CO. | PA | 04/08/2020 | 00:11 | EST-5 | Tornado | EF1 | 0 | 0 | 100.00K | 0.00K |
| NEW TEXAS | ALLEGHENY CO. | PA | 04/08/2020 | 00:12 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ARNOLA | WESTMORELAND CO. | PA | 04/08/2020 | 00:13 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| BRACKENRIDGE | ALLEGHENY CO. | PA | 04/08/2020 | 00:13 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 15.00K | 0.00K |
| ARNOLA | WESTMORELAND CO. | PA | 04/08/2020 | 00:14 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| NEW KENSINGTON | WESTMORELAND CO. | PA | 04/08/2020 | 00:14 | EST-5 | Thunderstorm Wind | 60 kts. EG | 0 | 0 | 20.00K | 0.00K |
| TARENTUM REMICH ARPT | ALLEGHENY CO. | PA | 04/08/2020 | 00:14 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| BRACKENRIDGE | ALLEGHENY CO. | PA | 04/08/2020 | 00:15 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 30.00K | 0.00K |
| BRACKENRIDGE | ALLEGHENY CO. | PA | 04/08/2020 | 00:15 | EST-5 | Hail | 1.25 in. | 0 | 0 | 0.00K | 0.00K |
| GAYLY | ALLEGHENY CO. | PA | 04/08/2020 | 00:15 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| INGRAM | ALLEGHENY CO. | PA | 04/08/2020 | 00:15 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| NEW KENSINGTON | WESTMORELAND CO. | PA | 04/08/2020 | 00:15 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| ARNOLA | WESTMORELAND CO. | PA | 04/08/2020 | 00:16 | EST-5 | Tornado | EF0 | 0 | 0 | 10.00K | 0.00K |
| WILKINS TOWNSHIP | ALLEGHENY CO. | PA | 04/08/2020 | 00:16 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| EDGECLIFF | WESTMORELAND CO. | PA | 04/08/2020 | 00:17 | EST-5 | Tornado | EF0 | 0 | 0 | 10.00K | 0.00K |
| MILLIGANTOWN | WESTMORELAND CO. | PA | 04/08/2020 | 00:18 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| MILLIGANTOWN | WESTMORELAND CO. | PA | 04/08/2020 | 00:18 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| INGRAM | ALLEGHENY CO. | PA | 04/08/2020 | 00:20 | EST-5 | Thunderstorm Wind | 60 kts. MG | 0 | 0 | 0.00K | 0.00K |
| LONGVIEW | ALLEGHENY CO. | PA | 04/08/2020 | 00:20 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| NORTH WASHINGTON | WESTMORELAND CO. | PA | 04/08/2020 | 00:22 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| DONALDSONS XRDS | WASHINGTON CO. | PA | 04/08/2020 | 00:23 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| AVONMORE | WESTMORELAND CO. | PA | 04/08/2020 | 00:25 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| CLAIRTON | ALLEGHENY CO. | PA | 04/08/2020 | 00:25 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| SALINA | WESTMORELAND CO. | PA | 04/08/2020 | 00:25 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| NATRONA HGTS | ALLEGHENY CO. | PA | 04/08/2020 | 00:27 | EST-5 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| WEST MIFFLIN | ALLEGHENY CO. | PA | 04/08/2020 | 00:29 | EST-5 | Thunderstorm Wind | 53 kts. MG | 0 | 0 | 0.00K | 0.00K |
| BISHOP | WASHINGTON CO. | PA | 04/08/2020 | 00:30 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| REDUCTION | WESTMORELAND CO. | PA | 04/08/2020 | 00:30 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| SCOTT HAVEN | WESTMORELAND CO. | PA | 04/08/2020 | 00:30 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| SWEENEYS XRDS | WESTMORELAND CO. | PA | 04/08/2020 | 00:30 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 0.00K | 0.00K |
| GRAPEVILLE | WESTMORELAND CO. | PA | 04/08/2020 | 00:33 | EST-5 | Thunderstorm Wind | 54 kts. MG | 0 | 0 | 0.00K | 0.00K |
| SUTERSVILLE | ALLEGHENY CO. | PA | 04/08/2020 | 00:33 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 0.00K | 0.00K |
| WEST NEWTON | WESTMORELAND CO. | PA | 04/08/2020 | 00:34 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| MANNITTO HAVEN | WESTMORELAND CO. | PA | 04/08/2020 | 00:35 | EST-5 | Hail | 0.75 in. | 0 | 0 | 0.00K | 0.00K |
| RADEBAUGH | WESTMORELAND CO. | PA | 04/08/2020 | 00:36 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| ELIZABETH | ALLEGHENY CO. | PA | 04/08/2020 | 00:40 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| SMITHTON | WESTMORELAND CO. | PA | 04/08/2020 | 00:40 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 20.00K | 0.00K |
| HOSTETTER | WESTMORELAND CO. | PA | 04/08/2020 | 00:42 | EST-5 | Thunderstorm Wind | 60 kts. EG | 0 | 0 | 150.00K | 0.00K |
| BUTTERMILK FALLS | WESTMORELAND CO. | PA | 04/08/2020 | 00:46 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| RECTOR | WESTMORELAND CO. | PA | 04/08/2020 | 00:48 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| WEST OVERTON | FAYETTE CO. | PA | 04/08/2020 | 00:49 | EST-5 | Thunderstorm Wind | 60 kts. EG | 0 | 0 | 0.00K | 0.00K |
| OWENSDALE | FAYETTE CO. | PA | 04/08/2020 | 00:50 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| REAGANTOWN | WESTMORELAND CO. | PA | 04/08/2020 | 00:50 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| PENNSVILLE | FAYETTE CO. | PA | 04/08/2020 | 00:51 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 1.00K | 0.00K |
| WEST OVERTON | FAYETTE CO. | PA | 04/08/2020 | 00:54 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| DAVISTOWN | FAYETTE CO. | PA | 04/08/2020 | 01:00 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 10.00K | 0.00K |
| NEMACOLIN | GREENE CO. | PA | 04/08/2020 | 01:00 | EST-5 | Thunderstorm Wind | 50 kts. EG | 0 | 0 | 5.00K | 0.00K |
| Totals: | 0 | 0 | 993.00K | 0.00K |
