A series of disturbances ahead of a cold frontal boundary brought rounds of heavy rainfall and strong to severe thunderstorms to the region during the afternoon and evening hours of Friday, August 17th. As a result of these disturbances, numerous trees and wires were downed across the region. There were also reports of flash flooding in Columbia county, New York. Rainfall from the event ranged from 1 to 5.36 inches. A Federal Disaster Declaration was declared due to the flooding in Columbia and surrounding counties in New York state. FEMA estimated over $36,000 million in infrastructure repair and debris removal.

Flash Flood in COLUMBIA, NEW YORK
From 17-AUG-18 17:25:00 to 17-AUG-18 19:25:00 (EST-5)
Location: CHATHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Route 66 was closed in Village Center due to heavy rain.

Flash Flood in COLUMBIA, NEW YORK
From 17-AUG-18 17:40:00 to 17-AUG-18 19:40:00 (EST-5)
Location: CHATHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

State Route 66 was closed at Payn Ave due to flooding.

Flash Flood in COLUMBIA, NEW YORK
From 17-AUG-18 19:05:00 to 17-AUG-18 21:05:00 (EST-5)
Location: CHATHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

State Route 66 was closed to Highbridge Road due to flooding.

Flash Flood in COLUMBIA, NEW YORK
From 17-AUG-18 19:40:00 to 17-AUG-18 21:40:00 (EST-5)
Location: RED ROCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A rockslide resulted in a road closure.

Heavy Rain in DUTCHESS, NEW YORK
From 17-AUG-18 20:50:00 to 17-AUG-18 21:12:00 (EST-5)
Location: WAPPINGERS FALLS
Reported by: Trained Spotter

Storm resulted in 1.21 inches of rainfall in 20 minutes.

Lightning in HERKIMER, NEW YORK
From 17-AUG-18 15:15:00 to 17-AUG-18 15:15:00 (EST-5)
Location: OHIO
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A home was struck by lightning and the fire department was dispatched.

Lightning in SARATOGA, NEW YORK
From 17-AUG-18 18:22:00 to 17-AUG-18 18:22:00 (EST-5)
Location: SARATOGA SPGS
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning caused a fire in the attic of City Hall. This resulted in a section of Broadway being closed. The time was estimated from radar.

Thunderstorm Wind in HERKIMER, NEW YORK
From 17-AUG-18 14:47:00 to 17-AUG-18 14:47:00 (EST-5)
Location: RUSSIA
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and wires downed on Russia Road.

Thunderstorm Wind in SCHOHARIE, NEW YORK
From 17-AUG-18 16:41:00 to 17-AUG-18 16:41:00 (EST-5)
Location: JEFFERSON
Magnitude: 50.00 EG
Reported by: 911 Call Center

Wires were downed. Time estimated by radar.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 17-AUG-18 17:02:00 to 17-AUG-18 17:02:00 (EST-5)
Location: ESPERANCE STATION
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees were downed. Time estimated by radar.

Thunderstorm Wind in SCHOHARIE, NEW YORK
From 17-AUG-18 17:02:00 to 17-AUG-18 17:02:00 (EST-5)
Location: MIDDLEBURG
Magnitude: 50.00 EG
Reported by: 911 Call Center

Wires were downed. Time estimated by radar.

Thunderstorm Wind in HERKIMER, NEW YORK
From 17-AUG-18 17:15:00 to 17-AUG-18 17:15:00 (EST-5)
Location: MIDDLEFIELD
Magnitude: 50.00 EG
Reported by: 911 Call Center

Tree was downed on Fishing Rock Road. Time estimated by radar.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 17-AUG-18 17:34:00 to 17-AUG-18 17:34:00 (EST-5)
Location: EAST GLENVILLE
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and wires were downed onto Route 50. Time estimated by radar.

Thunderstorm Wind in SARATOGA, NEW YORK
From 17-AUG-18 17:44:00 to 17-AUG-18 17:44:00 (EST-5)
Location: SARATOGA SPGS CO ARP
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees were downed. Time estimated by radar.

Thunderstorm Wind in SARATOGA, NEW YORK
From 17-AUG-18 17:48:00 to 17-AUG-18 17:48:00 (EST-5)
Location: MALTA
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees were downed.

Thunderstorm Wind in SARATOGA, NEW YORK
From 17-AUG-18 18:05:00 to 17-AUG-18 18:05:00 (EST-5)
Location: NORTH GREENFIELD
Magnitude: 50.00 EG
Reported by: NWS Employee

Trees and wires were downed.

Thunderstorm Wind in SARATOGA, NEW YORK
From 17-AUG-18 18:10:00 to 17-AUG-18 18:10:00 (EST-5)
Location: GREENFIELD CENTER
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees were downed.

Thunderstorm Wind in SARATOGA, NEW YORK
From 17-AUG-18 18:10:00 to 17-AUG-18 18:10:00 (EST-5)
Location: GANSEVOORT
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees were downed.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 17-AUG-18 19:30:00 to 17-AUG-18 19:30:00 (EST-5)
Location: CHATHAM
Magnitude: 50.00 EG
Reported by: 911 Call Center

Numerous wires down in Ghent.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 17-AUG-18 19:40:00 to 17-AUG-18 19:40:00 (EST-5)
Location: OMI
Magnitude: 50.00 EG
Reported by: 911 Call Center

Wires down across a road in the town of Ghent.

Thunderstorm Wind in COLUMBIA, NEW YORK
From 17-AUG-18 19:40:00 to 17-AUG-18 19:40:00 (EST-5)
Location: GHENT KLINE KILL ARP
Magnitude: 50.00 EG
Reported by: 911 Call Center

Wires were downed and burning in the town of Ghent.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 17-AUG-18 21:09:00 to 17-AUG-18 21:09:00 (EST-5)
Location: FREEDOM PLAINS
Magnitude: 50.00 EG
Reported by: 911 Call Center

Multiple trees down blocking Cramer Road.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 17-AUG-18 21:10:00 to 17-AUG-18 21:10:00 (EST-5)
Location: WAPPINGERS FALLS
Magnitude: 50.00 EG
Reported by: 911 Call Center

Trees and wires down. Time estimated by radar.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 17-AUG-18 21:16:00 to 17-AUG-18 21:16:00 (EST-5)
Location: CHESTNUT RIDGE
Magnitude: 50.00 EG
Reported by: 911 Call Center

Tree was downed.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 17-AUG-18 21:19:00 to 17-AUG-18 21:19:00 (EST-5)
Location: HAVILAND
Magnitude: 50.00 EG
Reported by: 911 Call Center

Multiple trees were downed.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 17-AUG-18 20:58:00 to 17-AUG-18 20:58:00 (EST-5)
Location: (POU)POUGHKEEPSIE AR
Magnitude: 50.00 MG
Reported by: ASOS

A wind gust of 58 mph was measured at the Poughkeepsie Airport ASOS.