A complex and powerful low pressure system moved across the region bringing damaging winds and widespread heavy rainfall. A low pressure system originating in the Deep South approached the region from the southwest during the day as a strong cold front approached from the Great Lakes region. These systems merged and moved across the northeastern United States. Moisture was transported into the region on a very strong low level jet. Rainfall totals ranged from just over an inch up to around 7 inches, with the highest amounts in the eastern Catskills. This heavy rainfall in a short period of time produced flash flooding over portions of the area.  Despite instability being very limited, the winds field was so strong aloft that showers and low-topped thunderstorms were able to transport strong, damaging winds to the surface, producing widespread damage to trees and power lines.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 15:55:00 to 18-SEP-12 15:55:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and across Haddock Hill Road, one half mile south of County Route 9, in Chatham due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 16:15:00 to 18-SEP-12 16:15:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down on State Route 9, near Proper Road, in Livingston due to non-thunderstorm winds.

Flash Flood in GREENE, NEW YORK
From 18-SEP-12 18:10:00 to 18-SEP-12 20:00:00 (EST-5)
Location: WINDHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads in Windham were reported to have been closed due to flash flooding from heavy rainfall.

Flash Flood in GREENE, NEW YORK
From 18-SEP-12 18:10:00 to 18-SEP-12 20:00:00 (EST-5)
Location: JEWETT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads in Jewett were reported to have been closed due to flash flooding from heavy rainfall.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 16:25:00 to 18-SEP-12 16:25:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and utility wires were reported down on County Route 7, one mile north of County Route 21, in Austerlitz due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 16:36:00 to 18-SEP-12 16:36:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and utility wires were reported down on Cemetery Road, one half mile off County Road 24, in Canaan due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 16:40:00 to 18-SEP-12 16:40:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A utility pole and wires were reported down on Pill Hill Road off state Route 22 in Hillsdale due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 16:47:00 to 18-SEP-12 16:47:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and wires were reported down on Pond Hill Road off State Route 22 in Hillsdale due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 17:04:00 to 18-SEP-12 17:04:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and utility wires were reported down on County Route 9 near Slate Hill Road in Ghent due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 17:31:00 to 18-SEP-12 17:31:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and utility wires were reported down on Kinderhook Street in the village of Valatie due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 17:31:00 to 18-SEP-12 17:31:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and across Merwin Road off Route 203 in Chatham due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 17:39:00 to 18-SEP-12 17:39:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down on County Route 5 in Canaan due to non-thunderstorm winds.

High Wind in EASTERN ALBANY, NEW YORK
From 18-SEP-12 12:25:00 to 18-SEP-12 12:25:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees were were reported down and on power lines between 3rd and 4th avenues in Watervliet due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:00:00 to 18-SEP-12 14:00:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and laying across Frisbee Street in Canaan due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 17:40:00 to 18-SEP-12 17:40:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down on County Route 13 in Canaan due to non-thunderstorm winds.

Thunderstorm Wind in GREENE, NEW YORK
From 18-SEP-12 17:15:00 to 18-SEP-12 17:15:00 (EST-5)
Location: JEWETT
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees and wires were reported down in Jewett due to thunderstorm winds.

Thunderstorm Wind in GREENE, NEW YORK
From 18-SEP-12 17:15:00 to 18-SEP-12 17:15:00 (EST-5)
Location: LEXINGTON
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees and wires were reported down in Lexington due to thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:03:00 to 18-SEP-12 14:03:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and laying across Garner Road in Greenport Center due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:05:00 to 18-SEP-12 14:05:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and power lines were reported down on Sopak Road in Taghkanic due to non-thunderstorm winds.

Thunderstorm Wind in ULSTER, NEW YORK
From 18-SEP-12 17:30:00 to 18-SEP-12 17:30:00 (EST-5)
Location: ROSENDALE
Magnitude: 50.00 EG
Reported by: Public

Trees were reported down due to thunderstorm winds in Rosendale.

Thunderstorm Wind in WASHINGTON, NEW YORK
From 18-SEP-12 17:30:00 to 18-SEP-12 17:30:00 (EST-5)
Location: FT EDWARD
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees were reported down due to thunderstorm winds in Fort Edward.

Flash Flood in SARATOGA, NEW YORK
From 18-SEP-12 17:50:00 to 18-SEP-12 19:50:00 (EST-5)
Location: CLIFTON PARK CENTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads in Clifton Park were reported to have been closed due to flash flooding from heavy rainfall.

Flash Flood in ALBANY, NEW YORK
From 18-SEP-12 19:05:00 to 18-SEP-12 19:50:00 (EST-5)
Location: ROESSLEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A portion of New York Route 5 (Central Ave) in Albany was reported to have been closed due to flash flooding from heavy rainfall.

Thunderstorm Wind in ULSTER, NEW YORK
From 18-SEP-12 17:35:00 to 18-SEP-12 17:35:00 (EST-5)
Location: KINGSTON
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees and wires were reported down due to thunderstorm winds in Kingston.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 18-SEP-12 17:40:00 to 18-SEP-12 17:40:00 (EST-5)
Location: AQUEDUCT
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees were reported down in Niskayuna due to thunderstorm winds.

Thunderstorm Wind in WASHINGTON, NEW YORK
From 18-SEP-12 18:15:00 to 18-SEP-12 18:15:00 (EST-5)
Location: BARKERS GROVE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Numerous trees were reported down due to thunderstorm winds in Easton.

Thunderstorm Wind in GREENE, NEW YORK
From 18-SEP-12 17:57:00 to 18-SEP-12 17:57:00 (EST-5)
Location: CATSKILL
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees and wires were reported down due to thunderstorm winds in Catskill.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:05:00 to 18-SEP-12 14:05:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and laying across State Farm Road in Kinderhook due to non-thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:13:00 to 18-SEP-12 14:13:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree and wires were reported down on Whippoorwill Road in Hillsdale due to non-thunderstorm winds.

Thunderstorm Wind in WASHINGTON, NEW YORK
From 18-SEP-12 18:20:00 to 18-SEP-12 18:20:00 (EST-5)
Location: GREENWICH
Magnitude: 50.00 EG
Reported by: Law Enforcement

Numerous trees were reported down in Greenwich due to thunderstorm winds.

Thunderstorm Wind in WASHINGTON, NEW YORK
From 18-SEP-12 18:11:00 to 18-SEP-12 18:11:00 (EST-5)
Location: FT EDWARD
Magnitude: 50.00 EG
Reported by: Law Enforcement

Trees were reported down due to thunderstorm winds in Fort Edward.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:56:00 to 18-SEP-12 14:56:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was down and laying in County Route 21B, just north of Sufelt Road, in Ghent due to non-thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:15:00 to 18-SEP-12 18:15:00 (EST-5)
Location: KINDERHOOK
Magnitude: 50.00 EG
Reported by: 911 Call Center

Numerous trees were reported down in Kinderhook due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:39:00 to 18-SEP-12 18:39:00 (EST-5)
Location: WEST LEBANON
Magnitude: 50.00 EG
Reported by: 911 Call Center

Numerous trees were reported down in West Lebanon due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:20:00 to 18-SEP-12 18:20:00 (EST-5)
Location: LIVINGSTON
Magnitude: 50.00 EG
Reported by: 911 Call Center

Numerous trees were reported down in Livingston due to thunderstorm winds.

High Wind in EASTERN COLUMBIA, NEW YORK
From 18-SEP-12 14:58:00 to 18-SEP-12 14:58:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was down and laying across Taconic Creek Road, near the intersection of West End Road, in Hillsdale due to non-thunderstorm winds.

High Wind in WESTERN COLUMBIA, NEW YORK
From 18-SEP-12 15:24:00 to 18-SEP-12 15:24:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was down and laying across County Route 25, near Rossman Road, in Stockport due to non-thunderstorm winds.

High Wind in SCHOHARIE, NEW YORK
From 18-SEP-12 15:53:00 to 18-SEP-12 15:53:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees and wires were reported down in North Blenheim due to non-thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:20:00 to 18-SEP-12 18:20:00 (EST-5)
Location: MELLENVILLE
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and utility wires were reported down at Roxbury Road in Claverack due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:20:00 to 18-SEP-12 18:20:00 (EST-5)
Location: MELLENVILLE
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and utility wires were reported down and on a house on Atlantic Avenue in Stockport due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:33:00 to 18-SEP-12 18:33:00 (EST-5)
Location: ELIZAVILLE
Magnitude: 50.00 EG
Reported by: 911 Call Center

A tree was down and across Beaver Road, off county Route 2, in Gallatin due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:54:00 to 18-SEP-12 18:54:00 (EST-5)
Location: EAST HILLSDALE
Magnitude: 50.00 EG
Reported by: 911 Call Center

A tree and utility wires were reported down on Oxbow Road at State Route 23 in Hillsdale due to thunderstorm winds.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 18-SEP-12 18:55:00 to 18-SEP-12 18:55:00 (EST-5)
Location: ANCRAM
Magnitude: 50.00 EG
Reported by: 911 Call Center

A tree and utility wires were reported down on Hall Hill Road, near County Road 7, in Ancram due to thunderstorm winds.

Flash Flood in ULSTER, NEW YORK
From 18-SEP-12 17:15:00 to 18-SEP-12 20:00:00 (EST-5)
Location: OLIVEREA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A portion of Oliverea Road was reported to be closed due to flash flooding caused by heavy rainfall.