A short-wave trough approached the region aloft while a pre-frontal trough moved into the area at the surface. producing severe thunderstorms in the afternoon. Dewpoints were between 70 and 75, providing ample moisture.  With only marginal shear, the storms were slow-moving and produced torrential downpours, which led to significant flooding, especially in urban areas of northeast Massachusetts.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 23-JUL-20 14:37:00 to 23-JUL-20 14:37:00 (EST-5)
Location: PRINCETON
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Princeton, a tree was down on Mountain Road.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:28:00 to 23-JUL-20 15:28:00 (EST-5)
Location: GREEN
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Weston, a tree was down on a car on Route 30 at Highmeadow Road.  Also, a tree was down on Route 30 at Ash Street.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 23-JUL-20 15:28:00 to 23-JUL-20 15:28:00 (EST-5)
Location: WEBSTER
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Webster, multiple trees and wires were down on Highland Street.  One tree fell onto the side of a house.  One utility pole was snapped.  Also, multiple wires were down on School Street.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 23-JUL-20 15:32:00 to 23-JUL-20 15:32:00 (EST-5)
Location: WEBSTER
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Dudley, two trees were down on Flaxfield Road -- one fell onto a house.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:35:00 to 23-JUL-20 15:35:00 (EST-5)
Location: HOLLISTON
Magnitude: 50.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

In Holliston, a large tree was down on wires on Central Street.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 23-JUL-20 15:35:00 to 23-JUL-20 15:35:00 (EST-5)
Location: NORTH UXBRIDGE
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Uxbridge, a tree was down on Hartford Avenue West.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 15:39:00 to 23-JUL-20 15:39:00 (EST-5)
Location: BABSON PARK
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Wellesley, a tree was down on Burke Lane at McLean Street.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:40:00 to 23-JUL-20 15:40:00 (EST-5)
Location: WABAN
Magnitude: 50.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In the Waban section on Newtown, a large tree was down on a house on Southwick Road. Two wires also were down.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 15:45:00 to 23-JUL-20 15:45:00 (EST-5)
Location: MEDFIELD
Magnitude: 55.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Medfield, a large tree was down on Lowell Mason Road.  A large tree was down on Main Street.  A large tree was down on Pound Street.  Three large trees were down into the back part of an apartment house on Wilkins Glen Road.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:50:00 to 23-JUL-20 15:50:00 (EST-5)
Location: MALDEN
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Malden, a tree was down on Fellsway East.

Thunderstorm Wind in SUFFOLK, MASSACHUSETTS
From 23-JUL-20 15:50:00 to 23-JUL-20 15:50:00 (EST-5)
Location: DORCHESTER
Magnitude: 50.00 EG
Property damage: 0.30K
Crop damage: 0.00K
Reported by: Amateur Radio

In Boston, power lines were down at the intersection of Milton Avenue and Rockwell Street.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 16:05:00 to 23-JUL-20 16:05:00 (EST-5)
Location: QUINCY
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Quincy, there was a report of a tree down - street unknown.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 23-JUL-20 16:05:00 to 23-JUL-20 16:05:00 (EST-5)
Location: TASSELTOP
Magnitude: 50.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

In Douglas, a tree was down on power lines on Hemlock Street.

Thunderstorm Wind in PLYMOUTH, MASSACHUSETTS
From 23-JUL-20 16:20:00 to 23-JUL-20 16:20:00 (EST-5)
Location: MONTELLO
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

In Brockton, a tree was down on Lisa Drive.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 16:15:00 to 23-JUL-20 16:15:00 (EST-5)
Location: WAMPUM CORNER
Magnitude: 50.00 EG
Property damage: 0.40K
Crop damage: 0.00K
Reported by: Amateur Radio

In Wrentham, power lines and a large tree branch were down on Bennett Street.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 16:25:00 to 23-JUL-20 16:25:00 (EST-5)
Location: PONKAPOG
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Canton, a tree was down on Randolph Street.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 16:30:00 to 23-JUL-20 16:30:00 (EST-5)
Location: AVON
Magnitude: 50.00 EG
Property damage: 0.30K
Crop damage: 0.00K
Reported by: Amateur Radio

In Avon, the top of a tree was downed on Pinewood Road.

Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:45:00 to 23-JUL-20 14:50:00 (EST-5)
Location: BALLARDVALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Lowell Street and State Route 133 eastbound were flooded.

Flash Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:08:00 to 23-JUL-20 14:12:00 (EST-5)
Location: LAWRENCE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Lawrence, Berkeley Street was flooded and impassable from Sheridan Street to Jackson Street to East Haverhill Street.  In addition, Parker Street was closed at the Merrimack River bridge due to flooding.

Lightning in ESSEX, MASSACHUSETTS
From 23-JUL-20 13:10:00 to 23-JUL-20 13:10:00 (EST-5)
Location: NEWBURYPORT
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Newburyport, a house on High Street was hit by lightning. There was smoke coming out of the electrical box in the basement.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:39:00 to 23-JUL-20 15:39:00 (EST-5)
Location: NEWTONVILLE
Magnitude: 50.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

In Waltham, a tree was down on wires on Ripley Street.

Thunderstorm Wind in SUFFOLK, MASSACHUSETTS
From 23-JUL-20 16:15:00 to 23-JUL-20 16:15:00 (EST-5)
Location: (BOS)LOGAN INTL ARPT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Winthrop, wires and a large branch were down on Court Road.

Thunderstorm Wind in NORFOLK, MASSACHUSETTS
From 23-JUL-20 16:11:00 to 23-JUL-20 16:11:00 (EST-5)
Location: FRANKLIN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Franklin, a tree was down on Philomena Way.  Another tree was down on Moore Avenue.

Flash Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:03:00 to 23-JUL-20 14:22:00 (EST-5)
Location: LAWRENCE
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Methuen, Lowell Street was impassable due to flash flooding. Two cars were trapped there. Broadway near Granite Street was flooded and impassable.  Also, Route 110 near Bates Street was flooded and impassable. Jackson Street was also flooded and impassable.

Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:20:00 to 23-JUL-20 14:25:00 (EST-5)
Location: GEORGETOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Georgetown, West Main Street and several other streets were flooded and impassable.

Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:26:00 to 23-JUL-20 14:42:00 (EST-5)
Location: NEWBURYPORT PLUM ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Newburyport, Water Street at Federal Street flooded and impassable. One care trapped in the flooding. There was 6 inches of street flooding on Plum Island Turnpike.

Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:42:00 to 23-JUL-20 14:46:00 (EST-5)
Location: BEVERLY
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Beverly, River Street was flooded with two cars trapped. Cabot Street from Milton Street to Church Street was flooded and impassable.

Flood in ESSEX, MASSACHUSETTS
From 23-JUL-20 15:10:00 to 23-JUL-20 15:15:00 (EST-5)
Location: WEST GLOUCESTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Gloucester, Maplewood Avenue was flooded and impassable.

Flood in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 15:45:00 to 23-JUL-20 15:50:00 (EST-5)
Location: ROBERTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In Waltham, South Street and Bedford Street were flooded to six inches. Manhole covers were lifted.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 23-JUL-20 13:11:00 to 23-JUL-20 13:11:00 (EST-5)
Location: SAUGUS IRON WORKS NH
Magnitude: 50.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Amateur Radio

In Lynn, a tree and wires were down on Hamilton Street at Lincoln Avenue.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 23-JUL-20 13:40:00 to 23-JUL-20 13:40:00 (EST-5)
Location: COOKS CORNER
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Granby, Harris Street and surrounding streets had several trees and large limbs down.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 23-JUL-20 13:52:00 to 23-JUL-20 13:52:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Belchertown, a large tree and a large branch were down on wires on George Hannum Street. A tree was down on Bay Road. A large tree was down on wires on Hamilton Street.  A tree was down on Warren Wright Road.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 14:10:00 to 23-JUL-20 14:10:00 (EST-5)
Location: WEST VLG
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In North Reading, a tree was down on Lowell Road.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 23-JUL-20 14:10:00 to 23-JUL-20 14:10:00 (EST-5)
Location: NORTH TEWKSBURY
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

In Andover, twelve trees were down on Southridge Circle, with several of them landing on homes.  A tree was down on wires on Greewood Road and a tree was down on wires on Chandler Road.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:15:00 to 23-JUL-20 14:15:00 (EST-5)
Location: MONTSERRAT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Beverly, a tree was down on Essex Street.

Thunderstorm Wind in ESSEX, MASSACHUSETTS
From 23-JUL-20 14:15:00 to 23-JUL-20 14:15:00 (EST-5)
Location: MERRIMAC PORT
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

In Amesbury, a tree was down on Pleasant Valley Road.