As a frontal boundary moved into the region, some areas received heavy rainfall from thunderstorms during the day of Tuesday, May 21st and into the early morning hours on May 22nd. This frontal boundary become stationary across the region for Wednesday, May 22nd.  In addition, it was quite warm and humid across much of eastern New York.
As an upper level disturbance moved across upstate New York, additional rounds of showers and thunderstorms developed during the afternoon on May 22nd.  With the ground saturated from recent rainfall and streams already high, northern portions of the Capital Region experienced flash flooding.  Some roads were closed and water rescues had to take place.
In addition, some of the thunderstorms became strong enough to produce gusty winds, which caused damage to trees and power lines.  Thunderstorm activity diminished by evening as the upper level disturbance moved away from the area and water levels slowly receded.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 22-MAY-13 14:29:00 to 22-MAY-13 14:29:00 (EST-5)
Location: POESTENKILL
Magnitude: 50.00 EG
Reported by: Law Enforcement

Wires were reported down due to thunderstorm winds in Poestenkill.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 22-MAY-13 14:20:00 to 22-MAY-13 14:20:00 (EST-5)
Location: PITTSTOWN
Magnitude: 50.00 EG
Reported by: Law Enforcement

A tree was reported down and on a car due to thunderstorm winds in Pittstown.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 22-MAY-13 14:30:00 to 22-MAY-13 14:30:00 (EST-5)
Location: SAND LAKE
Magnitude: 50.00 EG
Reported by: Law Enforcement

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

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 22-MAY-13 13:45:00 to 22-MAY-13 13:45:00 (EST-5)
Location: SCOTIA
Magnitude: 50.00 EG
Reported by: Trained Spotter

Multiple trees were reported down due to thunderstorm winds in Scotia.

Thunderstorm Wind in MONTGOMERY, NEW YORK
From 22-MAY-13 13:28:00 to 22-MAY-13 13:28:00 (EST-5)
Location: CHARLESTON
Magnitude: 50.00 EG
Reported by: Trained Spotter

A tree and power lines were reportedly down and across a road due to thunderstorm winds in Charleston.

Thunderstorm Wind in SCHOHARIE, NEW YORK
From 22-MAY-13 13:00:00 to 22-MAY-13 13:00:00 (EST-5)
Location: WARNERVILLE
Magnitude: 60.00 EG
Reported by: Trained Spotter

Several trees were reported down and shingles were blown off a roof due to thunderstorm winds in Warnerville.

Flash Flood in SCHENECTADY, NEW YORK
From 22-MAY-13 13:58:00 to 22-MAY-13 16:00:00 (EST-5)
Location: SCHENECTADY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

The public via Facebook reported flash flooding along Hampton Avenue in Schenectady from heavy rainfall from showers and thunderstorms.

Flash Flood in SCHENECTADY, NEW YORK
From 22-MAY-13 14:00:00 to 22-MAY-13 16:00:00 (EST-5)
Location: SCHENECTADY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported flash flooding at the intersection of Brandywine Avenue and Union Street in Schenectady from showers and thunderstorms.

Flash Flood in SARATOGA, NEW YORK
From 22-MAY-13 14:19:00 to 22-MAY-13 16:00:00 (EST-5)
Location: REXFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforecement reported flash flooding along Riverview Road in Rexford from showers and thunderstorms.

Flash Flood in SARATOGA, NEW YORK
From 22-MAY-13 14:30:00 to 22-MAY-13 16:00:00 (EST-5)
Location: MECHANICVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooded was reported on Main Street in Mechanicville due to showers and thunderstorms.  As a result of the flooding, Main Street was temporarily closed.

Flash Flood in SCHENECTADY, NEW YORK
From 22-MAY-13 14:00:00 to 22-MAY-13 16:00:00 (EST-5)
Location: SCHENECTADY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A meteorologist reported flash flooding along Crane Street in Schenectady.  Water was two to three feet deep and water rescues were needed to remove people from the flooding.

Heavy Rain in SCHENECTADY, NEW YORK
From 22-MAY-13 13:50:00 to 22-MAY-13 16:00:00 (EST-5)
Location: ROTTERDAM
Reported by: Trained Spotter

A trained spotter reported water flowing across parking lots and under cars two to three inches deep in Rotterdam.

Flash Flood in MONTGOMERY, NEW YORK
From 22-MAY-13 13:55:00 to 22-MAY-13 16:00:00 (EST-5)
Location: SCOTCH BUSH
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Local television media reported flash flooding on Sulphur Springs Road in Florida due to heavy rainfall from showers and thunderstorms.  The flash flooding caused significant damage to a home.  One and a half feet of water swept through the home.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 22-MAY-13 13:05:00 to 22-MAY-13 13:05:00 (EST-5)
Location: QUAKER STREET
Magnitude: 60.00 EG
Reported by: Trained Spotter

A tractor trailer was reportedly blown over due to thunderstorms winds on Interstate 88 near Delanson.

Thunderstorm Wind in SCHOHARIE, NEW YORK
From 22-MAY-13 12:59:00 to 22-MAY-13 12:59:00 (EST-5)
Location: RICHMONDVILLE
Magnitude: 50.00 EG
Reported by: Department of Highways

Two trees were reported down due to thunderstorms winds on Summit St and Brooker Hollow Road in Richmondville.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 22-MAY-13 14:17:00 to 22-MAY-13 14:17:00 (EST-5)
Location: SCHAGHTICOKE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Wires were reported down due to thunderstorm winds in Schaghticoke.