A warm and moist air mass remained in place over the region on June 30th.  At the surface, a weak stationary front was draped across the area.  During the afternoon hours, a weak upper level disturbance moved across the region.  This allowed some showers and thunderstorms to develop in the vicinity of the surface front.  With the moist air mass in place, these showers and thunderstorms produced locally heavy rainfall.  With the ground already saturated due to several weeks of wet weather, this led to flash flooding in a few locations.  In addition, some of the thunderstorms became strong enough to produce wind damage to trees and large hail.  The showers and thunderstorm activity waned by evening, as the disturbance moved east of the area.

Hail in HERKIMER, NEW YORK
From 30-JUN-13 15:45:00 to 30-JUN-13 15:55:00 (EST-5)
Location: MANHEIM CENTER
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter size hail was reported in Manheim Center during a thunderstorm.

Flash Flood in RENSSELAER, NEW YORK
From 30-JUN-13 15:00:00 to 30-JUN-13 17:30:00 (EST-5)
Location: STONY PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flash flooding occurred due to heavy rainfall in Castleton-on-Hudson.  Route 9J was closed in both directions between Seaman Avenue and the East Greenbush town line.  Several people were trapped in their vehicles due to flood waters on Main Street and had to be rescued.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 30-JUN-13 14:30:00 to 30-JUN-13 14:30:00 (EST-5)
Location: CASTLETON ON HUDSON
Magnitude: 50.00 EG
Reported by: Broadcast Media

Trees were downed due to thunderstorm winds in Castleton-on-Hudson.  The trees damaged boat docks at a local boat club on the Hudson River.

Thunderstorm Wind in HERKIMER, NEW YORK
From 30-JUN-13 15:45:00 to 30-JUN-13 15:45:00 (EST-5)
Location: LITTLE FALLS
Magnitude: 50.00 EG
Reported by: Trained Spotter

Several small trees were downed as a result of thunderstorm winds near Little Falls. The trees blocked Burrell Road.

Flash Flood in MONTGOMERY, NEW YORK
From 30-JUN-13 19:07:00 to 30-JUN-13 21:00:00 (EST-5)
Location: CANAJOHARIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Flash flooding occurred in the village of Canajoharie and the town of Root as a result of heavy rainfall.  Roads were washed out and closed as a result of the flooding.

Flash Flood in DUTCHESS, NEW YORK
From 30-JUN-13 14:30:00 to 30-JUN-13 17:00:00 (EST-5)
Location: CLINTON CORNERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash flooding occurred in Clinton Corners due to heavy rainfall. Several roads were covered by water.

Thunderstorm Wind in HERKIMER, NEW YORK
From 30-JUN-13 15:45:00 to 30-JUN-13 15:45:00 (EST-5)
Location: MANHEIM CENTER
Magnitude: 60.00 EG
Reported by: Trained Spotter

Multiple trees were downed as a result of thunderstorm winds in Manheim Center.  A barn was damaged, a chicken coop demolished and three hay wagons were knocked over. In addition, a home sustained damage to it's siding as a result of the winds.

Hail in ULSTER, NEW YORK
From 30-JUN-13 12:40:00 to 30-JUN-13 12:42:00 (EST-5)
Location: HIGHLAND
Magnitude: 1.00 
Reported by: Public

Quarter size hail was reported during a thunderstorm 1 mile south of Highland.

Hail in GREENE, NEW YORK
From 30-JUN-13 14:00:00 to 30-JUN-13 14:05:00 (EST-5)
Location: ATHENS
Magnitude: 1.25 
Reported by: Trained Spotter

Half dollar size hail was reported during a thunderstorm in Athens.