A cold front moved from the Great Lakes across New England during the night of the 18th. The air mass ahead of the cold front was very warm and very humid. Showers and thunderstorms developed well ahead of the front over New York and Pennsylvania, then moved east into New England. There were numerous reports of wind damage in northern and western Massachusetts.

Hail in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:19:00 to 18-JUN-18 16:20:00 (EST-5)
Location: ASHFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:19 PM EST, hail up to quarter-size fell on Hawley Road in Ashfield.

Hail in HAMPSHIRE, MASSACHUSETTS
From 18-JUN-18 16:16:00 to 18-JUN-18 16:18:00 (EST-5)
Location: PLAINFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:17 PM EST, hail up to 1 inch in diameter was reported on North Union Street and on Campbell Road.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:15:00 to 18-JUN-18 16:15:00 (EST-5)
Location: COLRAIN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:15 PM EST, a tree was reported down on wires on West Leyden Road in Colrain.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:29:00 to 18-JUN-18 16:29:00 (EST-5)
Location: BERNARDSTON
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:29 PM EST, multiple trees and wires were down on Shaw Road in Bernardston.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:31:00 to 18-JUN-18 16:31:00 (EST-5)
Location: SOUTH ASHFIELD
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:31 PM EST, wires and a transformer were down on Conway Road, State Route 116, in Ashfield.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:42:00 to 18-JUN-18 16:42:00 (EST-5)
Location: BURKVILLE
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:42 PM EST, a tree and wires were down on Shelburne Falls Road in Conway.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:46:00 to 18-JUN-18 16:46:00 (EST-5)
Location: WHATELY STATION
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:46 PM EST, two trees and wires were down on North Street in Whately.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 18-JUN-18 16:15:00 to 18-JUN-18 16:15:00 (EST-5)
Location: LEYDEN
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:15 PM EST, trees were reported down on wires on Kately Road, Mid County Road and Greenfield Road in Leyden.

Funnel Cloud in HAMPSHIRE, MASSACHUSETTS
From 16-JUN-18 16:50:00 to 18-JUN-18 16:55:00 (EST-5)
Location: GRANBY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 4:52 PM EST, a funnel cloud was sighted at Granby.  Multiple videos later confirmed rotation in the funnel cloud.

Lightning in HAMPDEN, MASSACHUSETTS
From 18-JUN-18 19:10:00 to 18-JUN-18 19:10:00 (EST-5)
Location: GILLETT CORNER
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 7:10 PM EST, lightning caused a structure fire at 58 Congamond Road in Southwick.  The fire started in the attic and then spread.  Two residents were able to escape without injury.

Flood in WORCESTER, MASSACHUSETTS
From 18-JUN-18 17:44:00 to 18-JUN-18 21:00:00 (EST-5)
Location: LEOMINSTER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:34 PM EST, a car was trapped in flood waters on Water Street in Leominster, and a second car was trapped in flood waters on Graham Street.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 18-JUN-18 17:33:00 to 18-JUN-18 17:33:00 (EST-5)
Location: WHALOM
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:33 PM EST, a tree was down across Pleasant Street in Leominster.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 18-JUN-18 17:35:00 to 18-JUN-18 17:35:00 (EST-5)
Location: HARVARD
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:35 PM EST a large tree and wires were reported down on Warren Avenue in Harvard.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 18-JUN-18 18:35:00 to 18-JUN-18 18:35:00 (EST-5)
Location: SOUTHBRIDGE ARPT
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Amateur Radio

At 6:35 PM EST, a tree and wires were reported down on Charlton Street in Southbridge.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:00:00 to 18-JUN-18 17:00:00 (EST-5)
Location: HOVEY CORNER
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5 PM EST, a tree was down on wires on Brookline Street in Pepperell.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:30:00 to 18-JUN-18 17:35:00 (EST-5)
Location: SOUTH CHELMSFORD
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:30 PM EST, many trees and wires were brought down on Old Lowell Road and Chelmsford Road in Westford.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:25:00 to 18-JUN-18 17:30:00 (EST-5)
Location: WESTFORD
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:30 PM EST at tree fell into a house on Sequoia Road in Westford.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:42:00 to 18-JUN-18 17:42:00 (EST-5)
Location: ACTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:42 PM EST, trees were down and blocking Notre Dame Road in Acton.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:50:00 to 18-JUN-18 17:50:00 (EST-5)
Location: BOXBOROUGH
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:50 PM EST, a tree was down on Depot Road in Boxborough.  At the same time, a tree was also down in Hill Road in Boxborough.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:42:00 to 18-JUN-18 17:42:00 (EST-5)
Location: EAST ACTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:42 PM EST, trees were down and blocking Main Street in Acton.

Lightning in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:36:00 to 18-JUN-18 17:37:00 (EST-5)
Location: HAVERHILL
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 6:36 PM EST lightning struck a house on Solitaire Drive in Haverhill.

Lightning in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:50:00 to 18-JUN-18 17:50:00 (EST-5)
Location: PIGEON COVE
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:50 PM EST, lightning struck a house, causing a fire, on Tarr's Lane in Rockport.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:35:00 to 18-JUN-18 17:35:00 (EST-5)
Location: GROVELAND
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:35 PM EST, two trees were down blocking Center Street in Groveland.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:43:00 to 18-JUN-18 17:43:00 (EST-5)
Location: NEWBURYPORT
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:43 PM EST two trees were down on High Street near Newburyport High School.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:45:00 to 18-JUN-18 17:45:00 (EST-5)
Location: HAVERHILL ARPT
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

At 5:45 PM EST, a tree was down on the backyard of a residence on Winona Avenue. This caused damage to the siding of the house and knocked down the fence.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:45:00 to 18-JUN-18 17:45:00 (EST-5)
Location: NEWBURY
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:45 PM EST a tree was down on a car on Valley Street in Merrimac.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:48:00 to 18-JUN-18 17:48:00 (EST-5)
Location: NEWBURY
Magnitude: 50.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:48 PM EST, a tree and wires were down on Middle Street in West Newbury.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:53:00 to 18-JUN-18 17:53:00 (EST-5)
Location: LINEBROOK
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:53 PM EST, a tree and wires were down on Leslie Road in Ipswich, and on Lymick Road in Ipswich.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:54:00 to 18-JUN-18 17:54:00 (EST-5)
Location: AMESBURY
Magnitude: 50.00 EG
Property damage: 16.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:54 PM EST, a tree came down on a pickup truck on Monroe Street in Amesbury.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 18-JUN-18 17:55:00 to 18-JUN-18 17:55:00 (EST-5)
Location: IPSWICH
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:55 PM EST several trees were down on Waldingfield Road in Hamilton.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 18-JUN-18 17:35:00 to 18-JUN-18 17:40:00 (EST-5)
Location: SOUTH CHELMSFORD
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At 5:35 PM EST, multiple trees were brought down on State Route 27 (Acton Road) in Westford and Chelmsford, near the town line.