During the afternoon of July 23rd, an upper level disturbance moved east toward central New York from southern Ontario, Canada.  Daytime heating and instability combined with favorable wind parameters in the atmosphere to produce severe thunderstorms.  Many reports were received of wind damage and very large hail.

Hail in ONEIDA, NEW YORK
From 23-JUL-12 17:55:00 to 23-JUL-12 17:55:00 (EST-5)
Location: CAMDEN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 23-JUL-12 18:29:00 to 23-JUL-12 18:29:00 (EST-5)
Location: ROME
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ONEIDA, NEW YORK
From 23-JUL-12 18:30:00 to 23-JUL-12 18:30:00 (EST-5)
Location: ROME
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ONEIDA, NEW YORK
From 23-JUL-12 18:38:00 to 23-JUL-12 18:38:00 (EST-5)
Location: ROME
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail lasted for six minutes. Also, the spotter estimated a wind gust of 60 mph.

Hail in ONEIDA, NEW YORK
From 23-JUL-12 18:56:00 to 23-JUL-12 18:56:00 (EST-5)
Location: MARCY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 23-JUL-12 19:15:00 to 23-JUL-12 19:15:00 (EST-5)
Location: STITTVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROOME, NEW YORK
From 23-JUL-12 17:00:00 to 23-JUL-12 17:00:00 (EST-5)
Location: HARPURSVILLE
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Around 100 trees were blown down. Power poles were also knocked down on several different roads.

Hail in ONEIDA, NEW YORK
From 23-JUL-12 19:25:00 to 23-JUL-12 19:25:00 (EST-5)
Location: UTICA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 23-JUL-12 19:30:00 to 23-JUL-12 19:30:00 (EST-5)
Location: STITTVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONONDAGA, NEW YORK
From 23-JUL-12 22:37:00 to 23-JUL-12 22:37:00 (EST-5)
Location: FAWN RIDGE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ONEIDA, NEW YORK
From 23-JUL-12 22:46:00 to 23-JUL-12 22:46:00 (EST-5)
Location: SYLVAN BEACH
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous trees were blown down.

Thunderstorm Wind in ONONDAGA, NEW YORK
From 23-JUL-12 22:33:00 to 23-JUL-12 22:33:00 (EST-5)
Location: CICERO
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down.

Hail in ONONDAGA, NEW YORK
From 23-JUL-12 22:43:00 to 23-JUL-12 22:43:00 (EST-5)
Location: VAN BUREN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ONONDAGA, NEW YORK
From 23-JUL-12 22:43:00 to 23-JUL-12 22:43:00 (EST-5)
Location: VAN BUREN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down.

Thunderstorm Wind in ONEIDA, NEW YORK
From 23-JUL-12 22:46:00 to 23-JUL-12 22:46:00 (EST-5)
Location: VIENNA
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Just east of the Vienna town line on Oneida Lake, a large boat lift and pontoon boat were flipped. Also, a large tree was blown down.

Thunderstorm Wind in ONONDAGA, NEW YORK
From 23-JUL-12 22:31:00 to 23-JUL-12 22:31:00 (EST-5)
Location: BREWERTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were blown down at Route 11 and Miller Road.

Thunderstorm Wind in CHENANGO, NEW YORK
From 23-JUL-12 13:55:00 to 23-JUL-12 13:55:00 (EST-5)
Location: SMITHVILLE CENTER
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were blown down.

Thunderstorm Wind in CHENANGO, NEW YORK
From 23-JUL-12 13:40:00 to 23-JUL-12 13:40:00 (EST-5)
Location: MC DONOUGH
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were blown down.

Thunderstorm Wind in ONEIDA, NEW YORK
From 23-JUL-12 23:33:00 to 23-JUL-12 23:33:00 (EST-5)
Location: BABCOCK HILL
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees were blown down on Babcock Hill Road.

Thunderstorm Wind in ONEIDA, NEW YORK
From 23-JUL-12 20:30:00 to 23-JUL-12 20:30:00 (EST-5)
Location: SAUQUOIT
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Four power poles were knocked down.

Thunderstorm Wind in CHENANGO, NEW YORK
From 23-JUL-12 13:18:00 to 23-JUL-12 13:18:00 (EST-5)
Location: AMBIERVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires were blown down.

Hail in BROOME, NEW YORK
From 23-JUL-12 17:35:00 to 23-JUL-12 17:35:00 (EST-5)
Location: VALLONIA SPGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROOME, NEW YORK
From 23-JUL-12 14:05:00 to 23-JUL-12 14:05:00 (EST-5)
Location: OQUAGA LAKE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down at the bottom of a hill from Oquaga Lake.

Tornado in ONEIDA, NEW YORK
From 23-JUL-12 23:02:00 to 23-JUL-12 23:04:00 (EST-5)
Location: SPENCER SETTLEMENT
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A small  tornado developed along a line of  thunderstorms across central Oneida county.  The tornado appeared to form in the city of Rome, just north of Lamphear Road, and just south of both State Route 26 and State Route 365.  Initially, two telephone poles were downed, along with several trees.
As the tornado progressed towards the east-southeast, it damaged portions of a cornfield, before encountering a newly built home.  The strong winds pushed the house off it's foundation.  Additionally, an attached garage on the east side of the residence sustained heavy damage, with the back wall and east facing wall collapsing, causing the garage to cave in.  Garage debris was blown as far as about 200 yards away.  Debris was strewn across the back yard of the residence, onto State Route 365, and into the back yard of a neighboring residence to the east.  The damage continued to be observed at a neighboring residence just to the east-southeast, south of Lamphear Road.

Thunderstorm Wind in ONEIDA, NEW YORK
From 24-JUL-12 23:12:00 to 24-JUL-12 23:12:00 (EST-5)
Location: SUNSET MANOR
Magnitude: 96.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A fast moving line of thunderstorms produced damaging straight-line winds in Whitesboro in Oneida county.  The microburst was short-lived, only producing damage for about 0.2 miles.  The damage path was bounded by the New York State Thruway and Hidden Valley Golf Course on the southwest edge, and Holy Cross Cemetery on the northeast edge.  Mainly tree damage was found within this roughly 500 yard wide area.
At the Hidden Valley Golf course, most of the tree damage was found on holes 10 through 15, close to where the course meets up with the thruway.  Two to three dozen trees were snapped, uprooted or had limbs damaged.  The trees were consistently blown down facing the thruway, oriented either toward the east or southeast.  Meanwhile, at Holy Cross Cemetery, a larger and more impressive swath of trees was downed, uprooted or snapped.  Some of these trees were healthy hardwoods, indicating that winds maximized near or just over 100 mph.  At this point, trees were blown down toward the north or northeast.

Hail in CHENANGO, NEW YORK
From 23-JUL-12 12:53:00 to 23-JUL-12 12:53:00 (EST-5)
Location: OXFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHENANGO, NEW YORK
From 23-JUL-12 13:00:00 to 23-JUL-12 13:00:00 (EST-5)
Location: GREENE ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHENANGO, NEW YORK
From 23-JUL-12 13:01:00 to 23-JUL-12 13:01:00 (EST-5)
Location: POLKVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 13:02:00 to 23-JUL-12 13:02:00 (EST-5)
Location: CHENANGO FORKS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHENANGO, NEW YORK
From 23-JUL-12 13:05:00 to 23-JUL-12 13:05:00 (EST-5)
Location: NORWICH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHENANGO, NEW YORK
From 23-JUL-12 13:08:00 to 23-JUL-12 13:08:00 (EST-5)
Location: AMBIERVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHENANGO, NEW YORK
From 23-JUL-12 13:30:00 to 23-JUL-12 13:30:00 (EST-5)
Location: GREENE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTSEGO, NEW YORK
From 23-JUL-12 13:57:00 to 23-JUL-12 13:57:00 (EST-5)
Location: HYDE PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTSEGO, NEW YORK
From 23-JUL-12 14:08:00 to 23-JUL-12 14:08:00 (EST-5)
Location: MILFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 14:10:00 to 23-JUL-12 14:10:00 (EST-5)
Location: KIRKWOOD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTSEGO, NEW YORK
From 23-JUL-12 14:20:00 to 23-JUL-12 14:20:00 (EST-5)
Location: SCHUYLER LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTSEGO, NEW YORK
From 23-JUL-12 14:30:00 to 23-JUL-12 14:30:00 (EST-5)
Location: WORCESTER
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OTSEGO, NEW YORK
From 23-JUL-12 14:31:00 to 23-JUL-12 14:31:00 (EST-5)
Location: WESTFORD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BROOME, NEW YORK
From 23-JUL-12 15:03:00 to 23-JUL-12 15:03:00 (EST-5)
Location: VESTAL CENTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BROOME, NEW YORK
From 23-JUL-12 15:10:00 to 23-JUL-12 15:10:00 (EST-5)
Location: WEST ENDICOTT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BROOME, NEW YORK
From 23-JUL-12 15:52:00 to 23-JUL-12 15:52:00 (EST-5)
Location: WEST ENDICOTT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 15:53:00 to 23-JUL-12 15:53:00 (EST-5)
Location: VESTAL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 15:55:00 to 23-JUL-12 15:55:00 (EST-5)
Location: VESTAL CENTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 16:44:00 to 23-JUL-12 16:44:00 (EST-5)
Location: WEST WINDSOR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MADISON, NEW YORK
From 23-JUL-12 16:51:00 to 23-JUL-12 16:51:00 (EST-5)
Location: LEONARDSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROOME, NEW YORK
From 23-JUL-12 13:00:00 to 23-JUL-12 13:00:00 (EST-5)
Location: CHENANGO FORKS
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown down.

Hail in ONEIDA, NEW YORK
From 23-JUL-12 19:03:00 to 23-JUL-12 19:03:00 (EST-5)
Location: HAWKINS CORNERS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROOME, NEW YORK
From 23-JUL-12 17:10:00 to 23-JUL-12 17:10:00 (EST-5)
Location: HARPURSVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public