A late summer surge of heat and humidity enveloped much of the northeast on the 11th of September. Afternoon temperatures climbed into the lower to mid 90s with dew points in the lower 70s resulting in high CAPE values throughout the forecast area. In addition, a very strong low to mid level jet was in place across the region producing a highly sheared environment. Late afternoon convection developing over western New England quickly formed into a large squall line with numerous bowing segments. This line of storms produced numerous reports of wind damage and large hail as it crossed the forecast area through the late evening hours before pushing offshore shortly before midnight.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 16:55:00 to 11-SEP-13 16:58:00 (EST-5)
Location: BETHLEHEM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Bethlehem.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 16:45:00 to 11-SEP-13 16:50:00 (EST-5)
Location: EASTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees near Easton.

Thunderstorm Wind in COOS, NEW HAMPSHIRE
From 11-SEP-13 16:10:00 to 11-SEP-13 16:13:00 (EST-5)
Location: JEFFERSON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on Hollow Road and wires on Route 2 near Jefferson.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 17:35:00 to 11-SEP-13 17:39:00 (EST-5)
Location: LINCOLN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees on the Kancamagus Highway and trees on wires on Church Road in Lincoln.

Thunderstorm Wind in COOS, NEW HAMPSHIRE
From 11-SEP-13 16:40:00 to 11-SEP-13 16:44:00 (EST-5)
Location: STRATFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees and wires in Stratford.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 17:12:00 to 11-SEP-13 17:16:00 (EST-5)
Location: HAVERHILL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Haverhill.

Thunderstorm Wind in SULLIVAN, NEW HAMPSHIRE
From 11-SEP-13 19:25:00 to 11-SEP-13 19:30:00 (EST-5)
Location: CORNISH CENTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and snapped poles on Route 12A in Cornish.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 18:45:00 to 11-SEP-13 18:50:00 (EST-5)
Location: WARREN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Warren.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 20:00:00 to 11-SEP-13 20:03:00 (EST-5)
Location: RUMNEY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires closing Route 25 in Rumney.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 20:00:00 to 11-SEP-13 20:04:00 (EST-5)
Location: ALEXANDRIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Alexandria.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 20:00:00 to 11-SEP-13 20:05:00 (EST-5)
Location: PLYMOUTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Plymouth.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 11-SEP-13 20:20:00 to 11-SEP-13 20:24:00 (EST-5)
Location: MOULTONBORO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Moultonborough.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 11-SEP-13 20:20:00 to 11-SEP-13 20:25:00 (EST-5)
Location: SANDWICH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Sandwich.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 20:30:00 to 11-SEP-13 20:34:00 (EST-5)
Location: HEBRON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Hebron.

Thunderstorm Wind in SULLIVAN, NEW HAMPSHIRE
From 11-SEP-13 19:11:00 to 11-SEP-13 19:15:00 (EST-5)
Location: CHARLESTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed a tree on a house in Charlestown.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 11-SEP-13 20:30:00 to 11-SEP-13 20:34:00 (EST-5)
Location: LOUDON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed a tree on a house in Loudon.

Thunderstorm Wind in COOS, NEW HAMPSHIRE
From 11-SEP-13 18:20:00 to 11-SEP-13 18:25:00 (EST-5)
Location: NORTH STRATFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed large branches on wires in North Stratford.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 11-SEP-13 20:35:00 to 11-SEP-13 20:39:00 (EST-5)
Location: CHICHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees in Chichester.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 11-SEP-13 20:40:00 to 11-SEP-13 20:44:00 (EST-5)
Location: PITTSFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees in Pittsfield.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 11-SEP-13 20:45:00 to 11-SEP-13 20:49:00 (EST-5)
Location: EAST CONWAY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm downed numerous trees on Sherman Farm in East Conway.

Hail in COOS, NEW HAMPSHIRE
From 11-SEP-13 16:35:00 to 11-SEP-13 16:39:00 (EST-5)
Location: RANDOLPH HILLS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm produced 0.75 inch hail in Randolph.

Hail in GRAFTON, NEW HAMPSHIRE
From 11-SEP-13 19:05:00 to 11-SEP-13 19:09:00 (EST-5)
Location: WOODSTOCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail in Woodstock.

Thunderstorm Wind in COOS, NEW HAMPSHIRE
From 11-SEP-13 16:10:00 to 11-SEP-13 16:15:00 (EST-5)
Location: JEFFERSON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed large branches and wires near Jefferson.