A low pressure system approached the region Thursday, July 16th. A warm front associated with the low moved northeast of the region by early afternoon, placing the local area in a very unstable airmass. A cold front then moved across the area Thursday night. In addition, an upper level low was approaching from the Great Lakes Region. Severe thunderstorms developed across Herkimer County by mid afternoon and moved southeastward across east central New York through the rest of the afternoon into the early evening hours.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:30:00 to 16-JUL-09 16:35:00 (EST-5)
Location: ROESSLEVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported approximately 2 miles northwest of Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:40:00 to 16-JUL-09 16:45:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail was reported approximately 2 miles west northwest of Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:45:00 to 16-JUL-09 16:50:00 (EST-5)
Location: DELMAR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported in Delmar during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:44:00 to 16-JUL-09 16:49:00 (EST-5)
Location: ALBANY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Penny size hail was reported in Albany during a thunderstorm.

Thunderstorm Wind in ULSTER, NEW YORK
From 16-JUL-09 18:05:00 to 16-JUL-09 18:05:00 (EST-5)
Location: PORT EWEN
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A measured wind gust of 64 mph was reported in Port Ewen.

Thunderstorm Wind in ULSTER, NEW YORK
From 16-JUL-09 18:15:00 to 16-JUL-09 18:15:00 (EST-5)
Location: WHITEPORT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed by strong thunderstorm winds and were blocking the southbound lanes of the New York State Thruway, Interstate 87, near milepost 85.

Hail in HERKIMER, NEW YORK
From 16-JUL-09 14:23:00 to 16-JUL-09 14:28:00 (EST-5)
Location: MOHAWK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported on Main Street in Herkimer, and on North Prospect Street in Herkimer during a thunderstorm.

Hail in HERKIMER, NEW YORK
From 16-JUL-09 14:37:00 to 16-JUL-09 14:42:00 (EST-5)
Location: LITTLE FALLS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported in Little Falls during a thunderstorm.

Thunderstorm Wind in HERKIMER, NEW YORK
From 16-JUL-09 14:33:00 to 16-JUL-09 14:33:00 (EST-5)
Location: EAST HERKIMER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was reported down along Route 5 in Herkimer due to strong thunderstorm winds.

Hail in HERKIMER, NEW YORK
From 16-JUL-09 14:32:00 to 16-JUL-09 14:37:00 (EST-5)
Location: EAST HERKIMER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported in Herkimer on Steuben Street during a thunderstorm.

Hail in MONTGOMERY, NEW YORK
From 16-JUL-09 15:02:00 to 16-JUL-09 15:07:00 (EST-5)
Location: FT PLAIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny to quarter size hail was reported in Nelliston during a thunderstorm.

Hail in MONTGOMERY, NEW YORK
From 16-JUL-09 15:03:00 to 16-JUL-09 15:08:00 (EST-5)
Location: NELLISTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Golf ball size hail was reported at Lock 15 of the Erie Canal during a thunderstorm.

Hail in MONTGOMERY, NEW YORK
From 16-JUL-09 15:10:00 to 16-JUL-09 15:15:00 (EST-5)
Location: CANAJOHARIE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half dollar size hail was reported in Palatine Bridge during a thunderstorm. The hail damaged windows and crops.

Thunderstorm Wind in HERKIMER, NEW YORK
From 16-JUL-09 14:32:00 to 16-JUL-09 14:32:00 (EST-5)
Location: EAST HERKIMER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was reported down on Steuben Street in Herkimer due to strong thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, NEW YORK
From 16-JUL-09 15:10:00 to 16-JUL-09 15:10:00 (EST-5)
Location: CANAJOHARIE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were reported down in Palatine Bridge due to strong thunderstorm winds.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:21:00 to 16-JUL-09 16:26:00 (EST-5)
Location: GUILDERLAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported approximately 4 miles west northwest of Colonie during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:24:00 to 16-JUL-09 16:29:00 (EST-5)
Location: WESTMERE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Quarter size hail was reported at the Hiawatha Trails Golf Course on State Route 155 off of Western Avenue.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:25:00 to 16-JUL-09 16:30:00 (EST-5)
Location: GUILDERLAND CENTER
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two inch diameter size hail was reported in Guilderland Center during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:25:00 to 16-JUL-09 16:29:00 (EST-5)
Location: WESTMERE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail was reported in Guilderland during a thunderstorm.

Hail in MONTGOMERY, NEW YORK
From 16-JUL-09 15:10:00 to 16-JUL-09 15:15:00 (EST-5)
Location: CHRISTMANS CORNERS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail was reported approximately 5 miles north northwest of Canajoharie during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:16:00 to 16-JUL-09 16:21:00 (EST-5)
Location: CARMEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported approximately 5 miles west of Colonie during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:15:00 to 16-JUL-09 16:20:00 (EST-5)
Location: ALTAMONT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported in Altamont during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:20:00 to 16-JUL-09 16:25:00 (EST-5)
Location: GUILDERLAND CENTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported in Guilderland Center during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:40:00 to 16-JUL-09 16:45:00 (EST-5)
Location: ALBANY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported approximately 1 mile north of Albany during a thunderstorm.

Hail in RENSSELAER, NEW YORK
From 16-JUL-09 17:00:00 to 16-JUL-09 17:10:00 (EST-5)
Location: EAST GREENBUSH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail was reported in the East Greenbush Town Hall parking lot.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:46:00 to 16-JUL-09 16:51:00 (EST-5)
Location: ROESSLEVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail was reported approximately 3 miles north northwest of Albany during a thunderstorm.

Hail in COLUMBIA, NEW YORK
From 16-JUL-09 17:22:00 to 16-JUL-09 17:27:00 (EST-5)
Location: TAGHKANIC
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was reported in Taghkanic during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:25:00 to 16-JUL-09 16:30:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tennis ball size hail was reported in McKownville during a thunderstorm. Hail size was verified by photos.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:32:00 to 16-JUL-09 16:37:00 (EST-5)
Location: MC KOWNVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Half dollar size hail was reported at the NWS Albany Office on the campus of the University of Albany.

Hail in SCHENECTADY, NEW YORK
From 16-JUL-09 16:29:00 to 16-JUL-09 16:34:00 (EST-5)
Location: CARMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported in Rotterdam during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:31:00 to 16-JUL-09 16:36:00 (EST-5)
Location: CARMEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail was reported approximately 5 miles west northwest of Colonie during a thunderstorm.

Hail in HERKIMER, NEW YORK
From 16-JUL-09 14:15:00 to 16-JUL-09 14:20:00 (EST-5)
Location: EAST HERKIMER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball size hail was reported on Pine Grove Road in East Herkimer during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:34:00 to 16-JUL-09 16:39:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Two inch diameter size hail was reported approximately 3 miles west northwest of Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:34:00 to 16-JUL-09 16:44:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Golf ball size hail was reported in Guilderland during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:36:00 to 16-JUL-09 16:41:00 (EST-5)
Location: MC KOWNVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail was reported at Crossgates Commons in Guilderland during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:40:00 to 16-JUL-09 16:45:00 (EST-5)
Location: ELSMERE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Penny size hail was reported in Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:20:00 to 16-JUL-09 16:25:00 (EST-5)
Location: WESTMERE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail was reported in Guilderland during a thunderstorm.

Hail in SCHENECTADY, NEW YORK
From 16-JUL-09 16:21:00 to 16-JUL-09 16:26:00 (EST-5)
Location: ROTTERDAM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail was reported approximately 2 miles west of Rotterdam during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:35:00 to 16-JUL-09 16:39:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail was reported on Krumkill Road in Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:49:00 to 16-JUL-09 16:54:00 (EST-5)
Location: ALBANY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball size hail was reported on South Allen Street in Albany during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:47:00 to 16-JUL-09 16:52:00 (EST-5)
Location: SLINGERLANDS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail was reported on Trumpeter Place in Slingerlands during a thunderstorm.

Hail in ALBANY, NEW YORK
From 16-JUL-09 16:33:00 to 16-JUL-09 16:38:00 (EST-5)
Location: NORTH BETHLEHEM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported by a driver at the intersection of Interstate 87 south and Interstate 90.

Flash Flood in COLUMBIA, NEW YORK
From 16-JUL-09 19:10:00 to 16-JUL-09 19:45:00 (EST-5)
Location: BARTON CORNERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water was flowing over the intersection of White House Crossing Road and Route 22, near Boston Corner, blocking traffic.