A leading surface boundary sagged from lower Michigan across the Southern Tier and Genesee Valley. Ample moisture pooling evidenced by precipitable water values in excess of 1.5 inches and modest shear generated instability that allowed for thunderstorms to vertically develop into a layer of dry air aloft. This provided the first set of wind damage producing thunderstorms. Subsequent to those, the Lake Ontario lake breeze forced additional thunderstorms that keyed on much higher low level helicity that moved southeastward from Genesee to Ontario counties. These storms developed notable rotation, resulting in one tornado in Monroe County.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 29-JUL-20 12:55:00 to 29-JUL-20 12:55:00 (EST-5)
Location: CHAUTAUQUA
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree and wires feel onto a house along State Route 394.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 29-JUL-20 13:01:00 to 29-JUL-20 13:01:00 (EST-5)
Location: SINCLAIRVILLE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires down.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 29-JUL-20 13:16:00 to 29-JUL-20 13:16:00 (EST-5)
Location: CHERRY CREEK
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree and wires were down.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 29-JUL-20 13:57:00 to 29-JUL-20 13:57:00 (EST-5)
Location: DELEVAN
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were down onto power lines.

Thunderstorm Wind in WYOMING, NEW YORK
From 29-JUL-20 14:10:00 to 29-JUL-20 14:10:00 (EST-5)
Location: EAGLE
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were down onto Route 39.

Thunderstorm Wind in WYOMING, NEW YORK
From 29-JUL-20 14:14:00 to 29-JUL-20 14:14:00 (EST-5)
Location: EAGLE
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down.

Thunderstorm Wind in WYOMING, NEW YORK
From 29-JUL-20 14:30:00 to 29-JUL-20 14:30:00 (EST-5)
Location: PORTAGE
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were down.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 29-JUL-20 14:35:00 to 29-JUL-20 14:35:00 (EST-5)
Location: NUNDA
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

Many trees were down north of Nunda.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 29-JUL-20 14:52:00 to 29-JUL-20 14:52:00 (EST-5)
Location: CONESUS
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 29-JUL-20 14:55:00 to 29-JUL-20 14:55:00 (EST-5)
Location: LIVONIA
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down.

Thunderstorm Wind in ONTARIO, NEW YORK
From 29-JUL-20 15:17:00 to 29-JUL-20 15:17:00 (EST-5)
Location: CANANDAIGUA
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree feels onto a parked car on Sandy Beach Drive.

Thunderstorm Wind in ONTARIO, NEW YORK
From 29-JUL-20 15:25:00 to 29-JUL-20 15:25:00 (EST-5)
Location: CANANDAIGUA
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees and power lines were reported down in Canandaigua.

Thunderstorm Wind in ONTARIO, NEW YORK
From 29-JUL-20 15:28:00 to 29-JUL-20 15:28:00 (EST-5)
Location: GRANGER
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree limbs and wires were down near the intersection of Route 245 and 247.

Thunderstorm Wind in WAYNE, NEW YORK
From 29-JUL-20 15:40:00 to 29-JUL-20 15:40:00 (EST-5)
Location: PALMYRA
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was down with power lines on Route 31.

Thunderstorm Wind in MONROE, NEW YORK
From 29-JUL-20 15:42:00 to 29-JUL-20 15:42:00 (EST-5)
Location: BEECHWOOD
Magnitude: 51.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

A tree was down onto a parked car on Baycliff Drive.

Thunderstorm Wind in MONROE, NEW YORK
From 29-JUL-20 15:43:00 to 29-JUL-20 15:43:00 (EST-5)
Location: BEECHWOOD
Magnitude: 51.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree fell onto a home on Druid Hill Park in Irondequoit.

Thunderstorm Wind in ONTARIO, NEW YORK
From 29-JUL-20 15:44:00 to 29-JUL-20 15:44:00 (EST-5)
Location: FIVE PTS
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

Multiple trees were down just north of exit 42 off of I-90.

Thunderstorm Wind in CAYUGA, NEW YORK
From 29-JUL-20 16:07:00 to 29-JUL-20 16:07:00 (EST-5)
Location: EMERSON
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were down onto Hard Point Road.

Thunderstorm Wind in GENESEE, NEW YORK
From 29-JUL-20 16:52:00 to 29-JUL-20 16:52:00 (EST-5)
Location: BASOM
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were reported down.

Thunderstorm Wind in GENESEE, NEW YORK
From 29-JUL-20 16:55:00 to 29-JUL-20 16:55:00 (EST-5)
Location: OAKFIELD
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires were reported down.

Thunderstorm Wind in GENESEE, NEW YORK
From 29-JUL-20 17:15:00 to 29-JUL-20 17:15:00 (EST-5)
Location: ELBA
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Newspaper

A large tree was uprooted along Oak Orchard Road near Elba.

Thunderstorm Wind in GENESEE, NEW YORK
From 29-JUL-20 17:42:00 to 29-JUL-20 17:42:00 (EST-5)
Location: OAKFIELD
Magnitude: 51.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were reported down.

Thunderstorm Wind in GENESEE, NEW YORK
From 29-JUL-20 17:50:00 to 29-JUL-20 17:50:00 (EST-5)
Location: ELBA
Magnitude: 51.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Social Media

Multiple trees and limbs down or damaged.

Thunderstorm Wind in MONROE, NEW YORK
From 29-JUL-20 17:50:00 to 29-JUL-20 17:50:00 (EST-5)
Location: GARBUTT
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree was down onto Union Street.

Thunderstorm Wind in MONROE, NEW YORK
From 29-JUL-20 17:52:00 to 29-JUL-20 17:52:00 (EST-5)
Location: INDUSTRY
Magnitude: 51.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Social Media

A large tree was down across South Road.

Thunderstorm Wind in MONROE, NEW YORK
From 29-JUL-20 17:52:00 to 29-JUL-20 17:52:00 (EST-5)
Location: SCOTTSVILLE
Magnitude: 65.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two trees were down on Quaker Road.

Tornado in MONROE, NEW YORK
From 29-JUL-20 17:53:00 to 29-JUL-20 17:57:00 (EST-5)
Location: WHEATLAND CENTER
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 1.00K
Reported by: NWS Storm Survey

A supercell thunderstorm developed over Genesee County and tracked
east-southeast from just south of the interchange of the New York
State Thruway and I-490. Scattered tree limb damage consistent
with straight line winds was found along the Oatka Creek upon
following the path of this storm into Monroe County starting
just east of Beulah Road and continuing through Mumford. Damage
became more concentrated upon crossing Wheatland Center Road and
entering Oatka Creek Park. A grassy field was laid down flat in
the opposite direction of the storm motion with tree damage to the
south end of the field indicating rotation with several damaged
trees having broken to the northeast. Farther east, a partially-
flattened corn field with two shallow-rooted uprooted trees along
its southern periphery was coupled with several broken trees along
a hiking path through Oatka Creek Park indicating opposing
directional damage. Scattered damage continued farther east from
Oatka Creek Park along Quaker Road south of Scottsville. A second
more concentrated area of damage was found near the intersection
of Quaker Road and Route 251. Several trees were downed along the
hillside west of Route 251, into Route 251, and on the property at
the southeast corner of Route 251 and Quaker Road. This included
at least three uprooted shallow-rooted trees and one approximately
five foot diameter broken and twisted hardwood tree along with
many downed smaller limbs that indicated a convergent damage path.
Due to the fact that the majority of the path of this storm was
along Oatka Creek and through the Oatka Creek Park and in an area
that is primarily rural, there was no damage to any structures.
Because of this, the National Weather Service use exclusively
tree damage indicators to reach a conclusion of an EF0 strength
and maximum wind speed of 75 mph.