Severe thunderstorms impacted eastern New York on May 31, 2017 as a cold upper-level disturbance interacted with a moderately unstable airmass. Showers and thunderstorms began in the late morning across western and central New York, and rapidly intensified upon reaching the Capital District around 4 pm. With cold air and strong winds at mid-levels of the atmosphere and moist air near the surface, the environment was prime for large hail, with up to golf ball-size hail reported near Niskayuna. Strong winds also occurred with these storms, particularly in the Colonie area where a microburst (concentrated swath of severe wind damage) was confirmed. These storms weakened east of the Capital District. A second area of storms rapidly strengthened upon entering the Mid-Hudson Valley around 6:30 pm. Again, hail up to golf ball-size was reported in Poughkeepsie, as well as several reports of wind damage. This line of storms eventually merged with an isolated cell and resulted in a brief EF1 tornado in the town of Wappinger in Dutchess County. It was the first tornado of the year in New York State.

Hail in DUTCHESS, NEW YORK
From 31-MAY-17 17:50:00 to 31-MAY-17 17:50:00 (EST-5)
Location: HILLS TERRACE
Magnitude: 1.75 
Reported by: Trained Spotter

A trained spotter reported golf ball size hail on Mitchell Avenue.

Hail in SCHENECTADY, NEW YORK
From 31-MAY-17 15:36:00 to 31-MAY-17 15:36:00 (EST-5)
Location: SCHENECTADY
Magnitude: 1.00 
Reported by: Public

Hail in RENSSELAER, NEW YORK
From 31-MAY-17 15:46:00 to 31-MAY-17 15:46:00 (EST-5)
Location: BRUNSWICK CENTER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in DUTCHESS, NEW YORK
From 31-MAY-17 18:30:00 to 31-MAY-17 18:30:00 (EST-5)
Location: QUAKER HILL
Magnitude: 60.00 EG
Reported by: Public

The public reported multiple maple trees down.

Hail in GREENE, NEW YORK
From 31-MAY-17 15:40:00 to 31-MAY-17 15:40:00 (EST-5)
Location: PLACE CORNERS
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in SCHENECTADY, NEW YORK
From 31-MAY-17 15:21:00 to 31-MAY-17 15:21:00 (EST-5)
Location: AQUEDUCT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:24:00 to 31-MAY-17 15:24:00 (EST-5)
Location: NEW SALEM
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down at the intersection of New Scotland Road and Stove Pipe Road.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:30:00 to 31-MAY-17 15:30:00 (EST-5)
Location: MOHAWK VIEW
Magnitude: 50.00 EG
Reported by: Public

The public reported a tree down on the road via Facebook.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:40:00 to 31-MAY-17 15:40:00 (EST-5)
Location: WATERVLIET
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down at the intersection of 14th Street and 2nd Ave.

Hail in SCHENECTADY, NEW YORK
From 31-MAY-17 15:18:00 to 31-MAY-17 15:18:00 (EST-5)
Location: ROTTERDAM
Magnitude: 1.00 
Reported by: NWS Employee

Thunderstorm Wind in SARATOGA, NEW YORK
From 31-MAY-17 15:26:00 to 31-MAY-17 15:26:00 (EST-5)
Location: EAST LINE
Magnitude: 50.00 EG
Reported by: Fire Department/Rescue

Local fire department reported trees and wires down.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:34:00 to 31-MAY-17 15:34:00 (EST-5)
Location: LOUDONVILLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down on Princess Lane.

Hail in WARREN, NEW YORK
From 31-MAY-17 14:39:00 to 31-MAY-17 14:39:00 (EST-5)
Location: HAGUE
Magnitude: 1.00 
Reported by: Public

Hail in WARREN, NEW YORK
From 31-MAY-17 14:40:00 to 31-MAY-17 14:40:00 (EST-5)
Location: THE GLEN
Magnitude: 0.88 
Reported by: Public

Hail in SCHENECTADY, NEW YORK
From 31-MAY-17 15:15:00 to 31-MAY-17 15:15:00 (EST-5)
Location: CARMAN
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:36:00 to 31-MAY-17 15:36:00 (EST-5)
Location: LOUDONVILLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down on Cherry Tree Road.

Hail in DUTCHESS, NEW YORK
From 31-MAY-17 17:50:00 to 31-MAY-17 17:50:00 (EST-5)
Location: SPACKENKILL
Magnitude: 0.75 
Reported by: Public

Hail in DUTCHESS, NEW YORK
From 31-MAY-17 17:56:00 to 31-MAY-17 17:56:00 (EST-5)
Location: ARLINGTON
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Thunderstorm Wind in DUTCHESS, NEW YORK
From 31-MAY-17 17:15:00 to 31-MAY-17 17:15:00 (EST-5)
Location: HOPEWELL JCT
Magnitude: 50.00 EG
Reported by: Public

The public reported trees down.

Thunderstorm Wind in DUTCHESS, NEW YORK
From 31-MAY-17 18:27:00 to 31-MAY-17 18:27:00 (EST-5)
Location: EAST FISHKILL
Magnitude: 50.00 EG
Reported by: 911 Call Center

Emergency dispatch reported trees down.

Thunderstorm Wind in MONTGOMERY, NEW YORK
From 31-MAY-17 14:50:00 to 31-MAY-17 14:50:00 (EST-5)
Location: GLEN
Magnitude: 50.00 EG
Reported by: Public

The public reported a tree down on the road via Facebook.

Tornado in DUTCHESS, NEW YORK
From 31-MAY-17 17:58:00 to 31-MAY-17 18:00:00 (EST-5)
Location: RED OAKS MILL
Tornado F-scale: EF1
Reported by: NWS Storm Survey

The National Weather Service, in coordination with Dutchess County Emergency Management officials, confirmed a brief touchdown of a tornado. The tornado path began near the intersection of Maloney Road and Route 376. The tornado traveled due east along and just north of Maloney Road for approximately 1.1 miles before dissipating. Damage included numerous snapped hardwood and softwood trees and the roof lifted off a shed.

Thunderstorm Wind in RENSSELAER, NEW YORK
From 31-MAY-17 15:50:00 to 31-MAY-17 15:50:00 (EST-5)
Location: BARBERVILLE
Magnitude: 50.00 EG
Reported by: Amateur Radio

A report of trees and wires down was relayed via amateur radio.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:20:00 to 31-MAY-17 15:20:00 (EST-5)
Location: KARNER
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down at the corner of East Old State Road and Kings Road.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:21:00 to 31-MAY-17 15:21:00 (EST-5)
Location: COLONIE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down on Albany Street.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:18:00 to 31-MAY-17 15:18:00 (EST-5)
Location: CARMEN
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down on East Lydius Street.

Hail in SCHENECTADY, NEW YORK
From 31-MAY-17 15:25:00 to 31-MAY-17 15:25:00 (EST-5)
Location: AQUEDUCT
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:19:00 to 31-MAY-17 15:19:00 (EST-5)
Location: LISHA KILL
Magnitude: 60.00 EG
Reported by: Law Enforcement

Law enforcement reported multiple trees down on Curry Road Extension.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:18:00 to 31-MAY-17 15:19:00 (EST-5)
Location: LISHA KILL
Magnitude: 78.00 EG
Reported by: NWS Storm Survey

The National Weather Service confirmed a microburst (straight line wind damage) near Colonie. Damage was in a narrow path that began near the intersection of Kings Road and Cordell Road, east-southeast to Morris Road. Along this path, numerous trees were uprooted and snapped, roofs were damaged, a flag pole was bent, at least one power pole was snapped and a large overhead door was buckled inward.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 31-MAY-17 15:20:00 to 31-MAY-17 15:20:00 (EST-5)
Location: HAWTHORNE HILL
Magnitude: 50.00 EG
Reported by: Emergency Manager

The Schenectady County emergency manager reported a tree was blown onto a house on East Country Club Drive.

Thunderstorm Wind in SCHENECTADY, NEW YORK
From 31-MAY-17 15:30:00 to 31-MAY-17 15:30:00 (EST-5)
Location: CARMAN
Magnitude: 50.00 EG
Reported by: Public

The public reported trees and wires down on the road via Facebook.

Thunderstorm Wind in ALBANY, NEW YORK
From 31-MAY-17 15:35:00 to 31-MAY-17 15:35:00 (EST-5)
Location: NEWTONVILLE
Magnitude: 50.00 EG
Reported by: Law Enforcement

Law enforcement reported a tree down on Osborne Road.