An upper level disturbance combined with a weakening cold front to initiate showers and thunderstorms across southern New England.  These storms produced damaging winds, downing trees, wires, and power poles throughout the area.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 16:40:00 to 04-MAY-10 16:40:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Many trees and wires on Route 202 were downed by thunderstorm winds.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 14:53:00 to 04-MAY-10 15:01:00 (EST-5)
Location: MIDDLEFIELD
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were downed by thunderstorm winds in Middlefield and Worthington, particularly along Route 12 in Worthington.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 04-MAY-10 14:57:00 to 04-MAY-10 14:57:00 (EST-5)
Location: COLRAIN
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Large trees on Main Street were downed by thunderstorm winds.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 14:55:00 to 04-MAY-10 15:00:00 (EST-5)
Location: WORTHINGTON CORNERS
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and wires were downed by thunderstorm winds in Chesterfield and Worthington, including a few on South Street in Chesterfield.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 15:00:00 to 04-MAY-10 15:00:00 (EST-5)
Location: FLORENCE
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A large tree downed by thunderstorm winds fell on a house on Landy Avenue.  The roof was damaged, but damage to the interior was limited and no one was injured.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 04-MAY-10 16:40:00 to 04-MAY-10 16:40:00 (EST-5)
Location: NEWTON
Magnitude: 50.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A utility pole on Wyman Street was downed by thunderstorm winds.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 04-MAY-10 16:20:00 to 04-MAY-10 16:20:00 (EST-5)
Location: HARVARD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees were downed by thunderstorm winds.

Thunderstorm Wind in MIDDLESEX, MASSACHUSETTS
From 04-MAY-10 16:35:00 to 04-MAY-10 16:35:00 (EST-5)
Location: CONCORD
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees on Williams Road were downed by thunderstorm winds, damaging an amateur radio antenna.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 14:55:00 to 04-MAY-10 14:55:00 (EST-5)
Location: CUMMINGTON
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Many trees and wires were downed by thunderstorm winds in Cummington.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 04-MAY-10 15:29:00 to 04-MAY-10 15:29:00 (EST-5)
Location: ORANGE ARPT
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Automated Surface Observing System at Orange Municipal Airport (KORE) recorded a wind gust of 67 mph.  No associated damage was reported, though damage was reported elsewhere in Franklin County.

Thunderstorm Wind in HAMPDEN, MASSACHUSETTS
From 04-MAY-10 15:30:00 to 04-MAY-10 15:30:00 (EST-5)
Location: HOLYOKE
Magnitude: 50.00 EG
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Large trees and limbs at Holyoke College were downed by thunderstorm winds.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 04-MAY-10 15:30:00 to 04-MAY-10 15:30:00 (EST-5)
Location: GREENFIELD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees on Plain and Greenfield Roads were downed by thunderstorm winds.

Thunderstorm Wind in HAMPDEN, MASSACHUSETTS
From 04-MAY-10 15:31:00 to 04-MAY-10 15:31:00 (EST-5)
Location: SOUTHWICK
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and wires were downed by thunderstorm winds throughout much of Southwick, temporarily closing 14 roads.  A barn at the intersections of Routes 10 and 202 was also damaged by the wind.

Thunderstorm Wind in HAMPDEN, MASSACHUSETTS
From 04-MAY-10 15:40:00 to 04-MAY-10 15:45:00 (EST-5)
Location: WEST SPRINGFIELD
Magnitude: 50.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple utility poles and trees were downed across West Springfield and Agawam, including several utility poles along Route 5 in West Springfield.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 15:46:00 to 04-MAY-10 15:46:00 (EST-5)
Location: BELCHERTOWN
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees on Route 9 were downed by thunderstorm winds.

Thunderstorm Wind in HAMPDEN, MASSACHUSETTS
From 04-MAY-10 15:52:00 to 04-MAY-10 15:52:00 (EST-5)
Location: SPRINGFIELD
Magnitude: 50.00 EG
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees on Cottage and Garden Streets and Roosevelt and Berkshire Avenues were downed by thunderstorm winds.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 04-MAY-10 16:10:00 to 04-MAY-10 16:15:00 (EST-5)
Location: BOYLSTON CENTER
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees in Clinton and a large branch in Boylston were downed by thunderstorm winds.  In addition, an amateur radio operator recorded a 59 mph wind gust on their home weather station.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 04-MAY-10 15:25:00 to 04-MAY-10 15:25:00 (EST-5)
Location: GREENFIELD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and wires were downed in Greenfield and Montague by thunderstorm winds.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 04-MAY-10 16:17:00 to 04-MAY-10 16:17:00 (EST-5)
Location: LEOMINSTER
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Wires on University Avenue were downed by thunderstorm winds.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 16:22:00 to 04-MAY-10 16:22:00 (EST-5)
Location: AMHERST
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Multiple trees and wires were downed by thunderstorm winds.

Thunderstorm Wind in WORCESTER, MASSACHUSETTS
From 04-MAY-10 16:34:00 to 04-MAY-10 16:34:00 (EST-5)
Location: WESTBOROUGH
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A twelve inch diameter tree on Haskell Street was downed by thunderstorm winds.  The tree fell, blocking the street.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 15:41:00 to 04-MAY-10 15:41:00 (EST-5)
Location: AMHERST
Magnitude: 50.00 EG
Property damage: 85.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Five solar panels were blown from the roof of the three story Knowles Engineering Building at the University of Massachusetts at Amherst.  In addition, six people were injured when two event tents were blown down at a barbeque at the university.  Construction fences and a tree were also downed.

Thunderstorm Wind in HAMPSHIRE, MASSACHUSETTS
From 04-MAY-10 15:20:00 to 04-MAY-10 15:20:00 (EST-5)
Location: HADLEY
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Large limbs and wires were downed on Route 47 in Hadley.  A tree was downed by thunderstorm winds onto a car on Mill Valley Road.

Thunderstorm Wind in HAMPDEN, MASSACHUSETTS
From 04-MAY-10 15:18:00 to 04-MAY-10 15:20:00 (EST-5)
Location: WEST SPRINGFIELD
Magnitude: 50.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The Automated Surface Observing System at Barnes Municipal Airport (KBAF) recorded a wind gust of 58 mph.  In addition, many trees and wires were downed by thunderstorm winds, including a four foot diameter oak tree on Morgan Road in West Springfield.  On City View Avenue in West Springfield, a tree and utility pole were downed, blocking the road.  Two power poles were downed near the intersection of East Elm Street and Riverdale Road.

Thunderstorm Wind in FRANKLIN, MASSACHUSETTS
From 04-MAY-10 15:13:00 to 04-MAY-10 15:17:00 (EST-5)
Location: SUNDERLAND
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Many trees were downed by thunderstorm winds in Sunderland along Route 47 and in Deerfield along Thayer Street.

Hail in MIDDLESEX, MASSACHUSETTS
From 04-MAY-10 16:15:00 to 04-MAY-10 16:15:00 (EST-5)
Location: BILLERICA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio