National Weather Service Raw Text Product

Bulk Download

Start UTC Date @0z:
End UTC Date @0z:
NOUS41 KPBZ 302229

Public Information Statement
National Weather Service Pittsburgh PA
629 PM EDT Fri Jul 30 2021


Start Location...Acme in Fayette County, PA
End Location...Donegal in Fayette County, PA
Date...July 29, 2021
Estimated Time...1:54 PM to 2:03 PM EDT
Maximum EF-Scale Rating...EF1
Estimated Maximum Wind Speed...100-105 mph
Maximum Path Width...100 yards
Path Length...4.9 miles
Beginning Lat/Lon...40.0897N 79.3634W
Ending Lat/Lon...40.1061N 79.4540W
* Fatalities...0
* Injuries...0

Initial damage was noted on Bear Rocks Road near Grandview Road,
consisting of large branch snaps and uprooted trees consistent with
EF0 damage. The tornado then continued roughly along Grandview Road
towards Mount Zion Road with similar additional tree damage.

The tornado then crossed Mount Zion Church Road and gained strength,
causing minor damage to a roof and a deck.  The tornado crossed a field
and snapped a few apple trees, and then caused minor damage to a barn.
Near this barn, a tree trunk was snapped, consistent with EF-1 wind

The most intense damage was noted on Kessler School Road. A manufactured
shed was tossed on its side about 20 feet.  Also, a manufactured garage
had partial wall collapse and a roof blown off, with the roof
transported about 20 feet downwind.  In the case of the garage, it was 
noted that foundation bolts were not ripped from the concrete pad, and 
were about 7 to 8 feet apart.  Also, the roof did not appear to be
well-attached and maintained its integrity when displaced. For these
reasons, EF1 damage of 100 to 105 MPH was assigned in lieu of higher
wind speeds.  Additional tree damage occurred further down Kessler
School Road to the intersection with Coffman Road.  A storage building
was tipped over on its side, but the roof was intact and the structure 
was sitting unattached on cinder blocks, consistent with 90 to 95 MPH
EF0 wind.

The tornado continued across a hill and County Line and Hellen School
Road, possibly briefly lifting as no damage was noted during the survey
in this area. The last noted damage occurred on Mountain View Road,
with snapped tree branches and damage to a tin roof at Mountain View
Acres. The tornado then dissipated in the woods along Mount Olive Road.

Many thanks to the Fayette County Emergency Management Agency and
local fire officials for their direct assistance with this survey.

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0...Weak......65 to 85 mph
EF1...Weak......86 to 110 mph
EF2...Strong....111 to 135 mph
EF3...Strong....136 to 165 mph
EF4...Violent...166 to 200 mph
EF5...Violent...>200 mph

* The information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
Storm Data.