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.
Measure
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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