Broad shortwave crossing southern Canada pushed an associated cold front into southern Canada during the early afternoon. A pre-frontal trough moved into eastern New York during the early afternoon with individual cells and line segments forming into one large squall line with bowing segments. The squall line pushed into central and southern New Hampshire by mid afternoon and reached the coast by early evening. Good heating ahead of this line with dew points in the upper 60s to lower 70s resulted in capes of 1500 to 3000 j/kg across much of the region. Although shear was limited, stronger cells moving around 35 kts transported strong mid level winds to the surface resulting in numerous reports of wind damage. Up to 45,000 people were without power by late afternoon in southern New Hampshire. Stronger cells also produced quarter to golf ball size hail.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:00:00 to 09-JUN-11 14:05:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed a tree on a building on Tenny Mountain Highway in Plymouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:00:00 to 09-JUN-11 14:04:00 (EST-5)
Location: HEBRON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on wires in Hebron.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 13:55:00 to 09-JUN-11 13:58:00 (EST-5)
Location: CANAAN STREET
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed multiple trees on wires in Canaan.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:00:00 to 09-JUN-11 14:04:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on wires in Plymouth.

Hail in SULLIVAN, NEW HAMPSHIRE
From 09-JUN-11 14:33:00 to 09-JUN-11 14:35:00 (EST-5)
Location: WASHINGTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 2.00 inch hail in Washington.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:10:00 to 09-JUN-11 14:13:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed a tree on an apartment building in Plymouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 13:45:00 to 09-JUN-11 13:48:00 (EST-5)
Location: LYME
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed multiple trees on wires in Lyme.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 13:45:00 to 09-JUN-11 13:48:00 (EST-5)
Location: ORFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed multiple trees on wires in Orford.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 09-JUN-11 14:30:00 to 09-JUN-11 14:34:00 (EST-5)
Location: LACONIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed trees on Folson Street in Laconia.

Thunderstorm Wind in STRAFFORD, NEW HAMPSHIRE
From 09-JUN-11 15:15:00 to 09-JUN-11 15:19:00 (EST-5)
Location: MIDDLETON CORNERS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed multiple trees in Middleton.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 09-JUN-11 15:51:00 to 09-JUN-11 15:54:00 (EST-5)
Location: SALEM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees in Salem.

Thunderstorm Wind in STRAFFORD, NEW HAMPSHIRE
From 09-JUN-11 15:26:00 to 09-JUN-11 15:32:00 (EST-5)
Location: LEE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed several trees on Stepping Stone Road in Lee.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 09-JUN-11 14:25:00 to 09-JUN-11 14:28:00 (EST-5)
Location: MOULTONBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on wires in Moultonborough.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 09-JUN-11 14:15:00 to 09-JUN-11 14:18:00 (EST-5)
Location: SANDWICH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on wires in Sandwich.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:05:00 to 09-JUN-11 14:08:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed a tree on the Red Carpet Inn in Plymouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:10:00 to 09-JUN-11 14:13:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed trees on I93 at exit 26 in Plymouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:10:00 to 09-JUN-11 14:14:00 (EST-5)
Location: HEBRON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees in Hebron.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 09-JUN-11 15:35:00 to 09-JUN-11 15:38:00 (EST-5)
Location: DERRY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced estimated gusts of 58 mph downing branches in Derry.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 09-JUN-11 16:00:00 to 09-JUN-11 16:04:00 (EST-5)
Location: PORTSMOUTH
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees throughout Portsmouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:00:00 to 09-JUN-11 14:03:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees on buildings in Plymouth.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-JUN-11 14:00:00 to 09-JUN-11 14:05:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on wires on Morgan Drive in Plymouth.