Thunderstorms that formed over the central Great Lakes during the morning survived and tracked east across western New York by early evening. The most instability was built up just southwest of the region across Ohio and western Pennsylvania which resulted in the most concentrated wind damage occurring over Chautauqua County, while wind damage was more sporadic farther north across western New York. A storm survey was conducted in the following days near Lake Erie State Park in western Chautauqua County, but the damage observed was concluded to be caused by straight line winds.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:35:00 to 20-JUL-23 18:35:00 (EST-5)
Location: CHERRY CREEK
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A large tree and wires were downed on Maple Avenue.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:35:00 to 20-JUL-23 18:35:00 (EST-5)
Location: CHERRY CREEK
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was down blocking both directions of Bates Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:37:00 to 20-JUL-23 18:37:00 (EST-5)
Location: BRANT
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were downed in Brant.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:37:00 to 20-JUL-23 18:37:00 (EST-5)
Location: ANGOLA LAKE SHR ADDN
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were downed in Farnham.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:38:00 to 20-JUL-23 18:38:00 (EST-5)
Location: SOUTH DAYTON
Magnitude: 51.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees and wires were downed in the town of South Dayton.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:40:00 to 20-JUL-23 18:40:00 (EST-5)
Location: DAYTON
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were downed in Dayton.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:41:00 to 20-JUL-23 18:41:00 (EST-5)
Location: WESLEY
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on Markhams Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:43:00 to 20-JUL-23 18:43:00 (EST-5)
Location: ANGOLA
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were downed in Angola.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:43:00 to 20-JUL-23 18:43:00 (EST-5)
Location: GOWANDA
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A tree was downed on a house and car.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:44:00 to 20-JUL-23 18:44:00 (EST-5)
Location: PERRYSBURG
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed in Perrysburg.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:46:00 to 20-JUL-23 18:46:00 (EST-5)
Location: EVANS CENTER
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Multiple trees downed in the town of Evans.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:46:00 to 20-JUL-23 18:46:00 (EST-5)
Location: HIGHLAND ON THE LAKE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on a home along Lake Shore Road in the town of Evans.

Thunderstorm Wind in NIAGARA, NEW YORK
From 20-JUL-23 18:46:00 to 20-JUL-23 18:46:00 (EST-5)
Location: YOUNGSTOWN
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was downed on a vehicle and a home in Youngstown.

Thunderstorm Wind in NIAGARA, NEW YORK
From 20-JUL-23 18:54:00 to 20-JUL-23 18:54:00 (EST-5)
Location: NEWFANE HOLLANDS ARP
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed across Nelson Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:55:00 to 20-JUL-23 18:55:00 (EST-5)
Location: HAMBURG ARPT
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on Belknap Road in Eden.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:57:00 to 20-JUL-23 18:57:00 (EST-5)
Location: GOWANDA
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed across Broadway Road.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 18:58:00 to 20-JUL-23 18:58:00 (EST-5)
Location: WESLEY
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed across State Route 353.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:58:00 to 20-JUL-23 18:58:00 (EST-5)
Location: HELMUTH
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed along Gowanda Zoar Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 18:59:00 to 20-JUL-23 18:59:00 (EST-5)
Location: NORTH EVANS
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

Power poles were broken.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:00:00 to 20-JUL-23 19:00:00 (EST-5)
Location: EDDYVILLE
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed across Reed Hill Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUL-23 19:07:00 to 20-JUL-23 19:07:00 (EST-5)
Location: SLOAN
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was downed on Doat Street near Poplar Avenue.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:08:00 to 20-JUL-23 19:08:00 (EST-5)
Location: EAST SALAMANCA
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed along I-86 at mile marker 61.3 which blocked traffic just east of Salamanca.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:13:00 to 20-JUL-23 19:13:00 (EST-5)
Location: YORKSHIRE
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was downed on Maple Street in Yorkshire.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:15:00 to 20-JUL-23 19:15:00 (EST-5)
Location: DELEVAN
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed across Delevan Road.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:15:00 to 20-JUL-23 19:15:00 (EST-5)
Location: YORKSHIRE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were downed.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:19:00 to 20-JUL-23 19:19:00 (EST-5)
Location: FRANKLINVILLE
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed in the village of Franklinville.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUL-23 19:20:00 to 20-JUL-23 19:20:00 (EST-5)
Location: ARCADE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were downed.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:26:00 to 20-JUL-23 19:26:00 (EST-5)
Location: ALLEGANY
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Multiple trees were downed on 4 Mile Road.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUL-23 19:28:00 to 20-JUL-23 19:28:00 (EST-5)
Location: EAGLE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were downed in the town of Eagle.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUL-23 19:33:00 to 20-JUL-23 19:33:00 (EST-5)
Location: WESTONS MILLS
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees downed across Olean-Portville Road.

Thunderstorm Wind in ALLEGANY, NEW YORK
From 20-JUL-23 19:34:00 to 20-JUL-23 19:34:00 (EST-5)
Location: CUBA
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on State Route 446.

Thunderstorm Wind in GENESEE, NEW YORK
From 20-JUL-23 19:46:00 to 20-JUL-23 19:46:00 (EST-5)
Location: ALEXANDER
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed in Alexander.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 20-JUL-23 20:18:00 to 20-JUL-23 20:18:00 (EST-5)
Location: AVON
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Power lines were downed in the village of Avon, including at North Avenue and Main Street.

Thunderstorm Wind in MONROE, NEW YORK
From 20-JUL-23 20:28:00 to 20-JUL-23 20:28:00 (EST-5)
Location: COLDWATER
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed at the intersection of Manitou Road and Shepard Road.

Thunderstorm Wind in ONTARIO, NEW YORK
From 20-JUL-23 20:39:00 to 20-JUL-23 20:39:00 (EST-5)
Location: NAPLES
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed.

Thunderstorm Wind in MONROE, NEW YORK
From 20-JUL-23 20:40:00 to 20-JUL-23 20:40:00 (EST-5)
Location: FAIRPORT
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on Golf Avenue near the intersection of Marsh Road.

Thunderstorm Wind in ONTARIO, NEW YORK
From 20-JUL-23 21:05:00 to 20-JUL-23 21:05:00 (EST-5)
Location: MANCHESTER
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Power lines were downed.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:13:00 to 20-JUL-23 18:13:00 (EST-5)
Location: IRVING
Magnitude: 65.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service in Buffalo completed a storm survey
of damage from a line of thunderstorms which occurred during the
early evening of Thursday July 20, 2023.
Storm damage surveyed was restricted to numerous, scattered
hardwood and softwood trees beginning in Lake Erie State Park near
Brocton, NY. Several trees were blown down, including a large pine
about 2 feet in diameter, and a large silver maple about 3 feet in
diameter. About a dozen large limbs were also blown down within
the park. The tree damage was sporadic, with most trees in the
park not showing any signs of damage. All of the trees and limbs
were blown down in a uniform direction, towards the east-
northeast in alignment with the track of the line of storms.
Widely scattered tree damage continued along Route 5 near the
Lake Erie shore from Lake Erie State Park to the south side of
Dunkirk, NY with several trees uprooted, and around a dozen large
tree limbs blown down. All of this tree damage was also aligned in
a uniform direction, towards the east-northeast.
All of the tree damage surveyed is consistent with straight line
thunderstorm wind damage, with peak wind gusts estimated near 75
mph based on the number and size of trees and limbs down.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:11:00 to 20-JUL-23 18:11:00 (EST-5)
Location: STATE LINE
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A telephone pole was downed across Route 20.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:12:00 to 20-JUL-23 18:12:00 (EST-5)
Location: HARTFIELD
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were downed in Hartfield.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:16:00 to 20-JUL-23 18:16:00 (EST-5)
Location: WESTFIELD
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on Union Street.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:17:00 to 20-JUL-23 18:17:00 (EST-5)
Location: BROCTON
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were downed on Park Street.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:17:00 to 20-JUL-23 18:17:00 (EST-5)
Location: WESTFIELD
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A large tree was downed across Academy Street.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:24:00 to 20-JUL-23 18:24:00 (EST-5)
Location: BROCTON
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed on Parcell Road.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:25:00 to 20-JUL-23 18:25:00 (EST-5)
Location: VAN BUREN PT
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were downed near Route 5 and Lake Ave.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:25:00 to 20-JUL-23 18:25:00 (EST-5)
Location: CHARLOTTE CENTER
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were downed on Cassadaga Road.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:26:00 to 20-JUL-23 18:26:00 (EST-5)
Location: BROCTON
Magnitude: 51.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A large tree was downed across Lake Avenue with additional trees downed on Lake Avenue.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 20-JUL-23 18:26:00 to 20-JUL-23 18:26:00 (EST-5)
Location: VAN BUREN BAY
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A tree was downed onto a house on West Shorewood Drive.