Tornadoes and Hail in Pennsylvania, May 1, 2017

Trained spotter reported a large tree down on an apartment building.

Trained spotter reported large tree limbs down, shingles blown off of an apartment complex, and a carport blown down.

State official reported many large trees down.

Trained spotter reported tree limbs down.

National Weather Service survey noted snapped limbs off a poplar tree and an uprooted softwood tree along Jennie Lane.

Amateur radio reported multiple trees down.

National Weather Service storm survey noted numerous trees uprooted and some large limbs snapped along Brown Lane. Fascia was also removed from a small home in this area.

The National Weather Service in Pittsburgh PA has confirmed a|tornado near Prospect in Butler County, western Pennsylvania on|05/01/2017.

A focused, narrow, path of tree damage was encountered beginning|along Portersville Road near Sechan Road. In this area, dozens of|hardwood and softwood trees were snapped or uprooted. Roofing|panels on a barn in this area were removed by the wind, and|paneling was removed from a trailer door. A home in this area that|sustained a near direct hit by the tornado appears to have been|sheltered by surrounding trees and suffered only minor damage.

The tornado then moved through a mobile home park, where extensive|tree damage was encountered. Vehicle and mobile home damage in the|Main Street and Douglas Street area appears to be been caused|predominantly by falling trees, although the wind did sweep out|foundational siding.

The tornado then weakened (with pockets of focused damage) while|it continued to the area of Grindle Road and Election House Road,|where modest damage was sustained at a greenhouse property. Among|other damage at this site, a large container was lofted and|transported several tens of feet over a greenhouse structure.

Trained spotter measured on a Davis anemometer.

Trained spotter reported large branches greater than 2 inches down.

Trained spotter reported a large limb down along Roberts Drive.

County official reported a tree down on a house on Payne Hill Road.

Social media reported tree limbs down.

County official reported Stilley Road closed due to downed power lines between Route 51 and Prospect Road.

Member of the public reported an uprooted tree on social media.

A trained spotter reported power lines down.

The National Weather Service confirmed a tornado near Eldorado Road in Butler County. A focused, narrow swath of damage was discovered in the woods along Eldorado Road. Several hardwood trees were uprooted with others snapped.

Local law enforcement reported trees snapped and uprooted in Reno Township.

Trained spotter reported numerous trees down throughout the county.

Law enforcement reported trees snapped and uprooted.

Received report on social media of a tree uprooted.

The National Weather Service in Pittsburgh PA confirmed a tornado near Wentlings Corners in Clarion County PA.

Damage in the Wentlings Corners area appears to have |resulted from a combination of tornadic and non-tornadic wind. A |coherent path was discovered from near Route 338 and Canoe Ripple |Road to an area north of Tippecanoe Road and east of Wentlings |Corners Road.

The damage observed during the survey mainly was to trees, |although residents of the area have provided photographic evidence|of shingle removal from outbuildings and displaced items that are|not part of the set of official damage indicators used during |storm damage surveys. Structural damage that was identified to the|survey team appeared to have resulted indirectly from falling and|flying debris. Photographs provided via social media to the NWS |appear to depict a partial funnel cloud and rain curtains in the |area where damage was sustained.

Additional damage and extreme wind were reported in the area of |Huckleberry Ridge Road/Providence Church Road, but the team could |identify no coherent track in this area. Wind in this area |nevertheless likely reached damaging speed, but the lack of a |coherent track and radar imagery suggest that this wind likely was|associated with a localized surge in outflow to the east of the |tornadic portion of the storm.

As part of a survey, the National Weather Service survey team reported trees dnapped and uprooted along Route 66, just north of Route 322.

State official reported trees down.

State official reported several trees down.

State official reported several trees down near Fryburg.

Trained spotter reported several large trees down.

National Weather Service Storm Survey team reported limbs snapped along route 66.

The National Weather Service in Pittsburgh has confirmed a|tornado along Route 36 in Clarion County, PA.

A NWS survey team encountered a focused path of concentrated tree|damage that began in the woods along Gravel Lick Road and|continued across Route 36 into a forested area. Toward the end of|the path, the damage width widened and showed clear indications |of convergent rotation. Dozens of softwood trees in this area were|snapped as the brief tornado raced northeastward.

State official reported several trees down.

Amid widespread blowdown in the Cook Forest, the NWS survey team |evaluated a narrow damage path along Forest Road, where a focused, |concentrated swath of dozens of softwood trees was snapped or |uprooted.

The National Weather Service in Pittsburgh has confirmed a |tornado near Newmansville in Clarion and Forest Counties in Pennsylvania.

Two distinct, tornadic damage swaths seemingly associated with |one parent mesocyclone were discovered beginning along Pine Hollow|Road in northern Clarion County.

A survey team examined damage along Red Pine Circle and Pine |Hollow Road in northern Clarion County. The team discovered a |coherent, convergent track of tree damage that began in a field to|the west of Red Pine Circle and carved a focused swath through |trees at the northwestern corner of the Red Pine Circle loop. |Hardwood and softwood trees were snapped and uprooted in this |area, with damage sustained to several cabins from falling trees. |Nearly every tree within the 100 yd-wide swath sustained some |degree of damage.

To the south of the tornado track, additional tree damage was |discovered that is consistent with a broader swath of non-tornadic|wind. Sporadic, snapped large limbs and a few uproots were found |along the southern stretch of Red Pine Circle and the southern |portion of Pine Hollow Road.

A distinct track within the same parent mesocyclone crossed Pine |Hollow Road near Kerr Drive and continued to show sporadic damage |to trees into southern Forest County before weakening along |Guitonville Road in Green Township. Direct damage along the |entirety of the track appears to be predominantly to trees, with |extensive tree devastation encountered along Pine Hollow Road. In |this area, a section of forest was leveled/snapped, representing |the most-intense wind damage encountered in all surveys conducted |for this storm system. Clarion County officials informed the team |that the road had been closed for a prolonged period following the|storm.

Tree damage along this track's extension on Kerr Drive and across|Carll Drive continued into the wooded area to the north. Damage |with some degree of concentration also was encountered along |Guitonville Road at the geographical northward extension of this |track. While the survey team was unable to traverse the wooded |area between these two damage points to confirm their continuity, |it appears most probable that an at-least discontinuous track of |tree damage connects the two points.

A survey conducted by the National Weather Service noted sporadic tree snaps and uproots in the woods along Guitonville Road.

Broadcast media reported multiple trees down in Tionesta and Endeavor.

The National Weather Service in Pittsburgh has confirmed a |tornado near Newmansville in Clarion and Forest Counties in Pennsylvania.

Two distinct, tornadic damage swaths seemingly associated with |one parent mesocyclone were discovered beginning along Pine Hollow|Road in northern Clarion County.

A survey team examined damage along Red Pine Circle and Pine |Hollow Road in northern Clarion County. The team discovered a |coherent, convergent track of tree damage that began in a field to|the west of Red Pine Circle and carved a focused swath through |trees at the northwestern corner of the Red Pine Circle loop. |Hardwood and softwood trees were snapped and uprooted in this |area, with damage sustained to several cabins from falling trees. |Nearly every tree within the 100 yd-wide swath sustained some |degree of damage.

To the south of the tornado track, additional tree damage was |discovered that is consistent with a broader swath of non-tornadic|wind. Sporadic, snapped large limbs and a few uproots were found |along the southern stretch of Red Pine Circle and the southern |portion of Pine Hollow Road.

A distinct track within the same parent mesocyclone crossed Pine |Hollow Road near Kerr Drive and continued to show sporadic damage |to trees into southern Forest County before weakening along |Guitonville Road in Green Township. Direct damage along the |entirety of the track appears to be predominantly to trees, with |extensive tree devastation encountered along Pine Hollow Road. In |this area, a section of forest was leveled/snapped, representing |the most-intense wind damage encountered in all surveys conducted |for this storm system. Clarion County officials informed the team |that the road had been closed for a prolonged period following the|storm.

Tree damage along this track's extension on Kerr Drive and across|Carll Drive continued into the wooded area to the north. Damage |with some degree of concentration also was encountered along |Guitonville Road at the geographical northward extension of this |track. While the survey team was unable to traverse the wooded |area between these two damage points to confirm their continuity, |it appears most probable that an at-least discontinuous track of |tree damage connects the two points.

A narrow, convergent path of damage was documented via aerial imagery after being discovered and documented by Forest Service personnel. Damage consisted of uprooted and snapped hardwood and softwood trees.

A survey conducted by the National Weather Service noted trees down across Route 666.

A narrow, convergent path of damage was documented via aerial imagery after being discovered and documented by Forest Service personnel. Damage consisted of uprooted and snapped hardwood and softwood trees.

An initially narrow tornado grew in scale rapidly with several embedded subvortices, causing considerable and widespread damage to hardwood and softwood trees over a nearly mile-long path. This path was documented via aerial imagery after being discovered and documented by Forest Service personnel.

State official reported numerous trees down.

A narrow, convergent path of intense damage was documented via aerial imagery after being discovered and documented by Forest Service personnel. Damage consisted entirely of uprooted and snapped hardwood and softwood trees. This is segment one of a county-crossing track into Elk County, PA.

Measured at Latrobe Airport.

The public reported trees snapped and large limbs down.

A survey conducted by the National Weather Service noted damage to trees along route 666 near Jay Creek Road. Damage indicated wind speeds near 75mph.

Post on social media reported a large pine tree uprooted and several large branches broken.

County official reported multiple trees down in Brookville.

County official reported multiple trees down in Punxsutawney.

Recorded at Dubois airport.