A very warm and humid air mass was in place across western and north central New York. As is usually the case with an approaching cold front, thunderstorms fired up along a pre-frontal boundary that extended from the Lake Erie shoreline northeast to Rochester. As the storms grew northeast along this boundary, they eventually encountered an outflow boundary pushing south from Lake Ontario. The intersecting boundaries fueled more impressive storms. Given high precipitable water values, the strong updrafts in these boundary enhanced storms generated copious amounts of lightning. Low topped convection does not allow for such electrification as a deep mixed phase layer is not present. The tight clustering of these lightning cores, when combined with strong divergence at cloud top was enough to generate storms that produced wind damage.

Thunderstorm Wind in MONROE, NEW YORK
From 16-JUL-18 15:36:00 to 16-JUL-18 15:36:00 (EST-5)
Location: ROCHESTER
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Tree and wire down on Garland Avenue.

Thunderstorm Wind in MONROE, NEW YORK
From 16-JUL-18 15:37:00 to 16-JUL-18 15:37:00 (EST-5)
Location: ROCHESTER
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires down on Maple Street.

Thunderstorm Wind in MONROE, NEW YORK
From 16-JUL-18 15:40:00 to 16-JUL-18 15:40:00 (EST-5)
Location: ROCHESTER
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires down on Campbell Street.

Thunderstorm Wind in MONROE, NEW YORK
From 16-JUL-18 15:45:00 to 16-JUL-18 15:45:00 (EST-5)
Location: ROCHESTER
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree fell on a house in Rochester.

Thunderstorm Wind in MONROE, NEW YORK
From 16-JUL-18 16:02:00 to 16-JUL-18 16:02:00 (EST-5)
Location: WEBSTER
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires down in Webster.

Thunderstorm Wind in WAYNE, NEW YORK
From 16-JUL-18 16:20:00 to 16-JUL-18 16:20:00 (EST-5)
Location: MARBLETOWN
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: 911 Call Center

Tree down on Clark Road.

Thunderstorm Wind in WAYNE, NEW YORK
From 16-JUL-18 16:20:00 to 16-JUL-18 16:20:00 (EST-5)
Location: MUD MILLS
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires down on Bowers and Shuler Roads.

Thunderstorm Wind in WAYNE, NEW YORK
From 16-JUL-18 16:58:00 to 16-JUL-18 16:58:00 (EST-5)
Location: ROSE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and wires down on Catchpole Road in Rose.

Flash Flood in ALLEGANY, NEW YORK
From 16-JUL-18 20:30:00 to 16-JUL-18 21:00:00 (EST-5)
Location: PAYNESVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Route 248A closed due to water over the roadway.

Thunderstorm Wind in CHAUTAUQUA, NEW YORK
From 16-JUL-18 19:55:00 to 16-JUL-18 19:55:00 (EST-5)
Location: JAMESTOWN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees down outside Jamestown.

Thunderstorm Wind in GENESEE, NEW YORK
From 16-JUL-18 21:11:00 to 16-JUL-18 21:11:00 (EST-5)
Location: DARIEN CENTER
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Several trees down with damage to camping equipment at Darien Lakes State Park.

Hail in MONROE, NEW YORK
From 16-JUL-18 15:54:00 to 16-JUL-18 15:54:00 (EST-5)
Location: PENFIELD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter