A very moist air mass was in place across the region on the afternoon of July 19th as a cold front approached from the west. Precipitable water values, which approached 2 inches, were 2 to 3 standard deviations above normal. A strong, low-level jet of 50 knots and flow that was nearly parallel to the front caused storms to train across the area, adding to the flash flood risk. Numerous reports of wind damage and flash flooding were received during this event.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 19-JUN-17 12:40:00 to 19-JUN-17 12:44:00 (EST-5)
Location: WOLFEBORO FALLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed a tree and numerous large limbs onto wires in Wolfeboro Falls.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 19-JUN-17 14:40:00 to 19-JUN-17 14:45:00 (EST-5)
Location: LOUDON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Loudon.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 19-JUN-17 14:41:00 to 19-JUN-17 14:46:00 (EST-5)
Location: GILSUM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorms downed a tree on the roadway along with wires on Belvedere Road.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 19-JUN-17 14:50:00 to 19-JUN-17 14:54:00 (EST-5)
Location: HENNIKER
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 Henniker.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 19-JUN-17 15:06:00 to 19-JUN-17 15:10:00 (EST-5)
Location: LONDON CENTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed large trees in a yard in London.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 19-JUN-17 15:35:00 to 19-JUN-17 15:40:00 (EST-5)
Location: ALTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed power lines in Alton.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 19-JUN-17 15:30:00 to 19-JUN-17 15:35:00 (EST-5)
Location: SILVER LAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees south of Madison.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 19-JUN-17 14:40:00 to 19-JUN-17 14:45:00 (EST-5)
Location: HENNIKER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Henniker.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 19-JUN-17 15:45:00 to 19-JUN-17 15:49:00 (EST-5)
Location: TAMWORTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Tamworth.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 19-JUN-17 16:15:00 to 19-JUN-17 16:19:00 (EST-5)
Location: CHESTERFIELD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Chesterfield.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 19-JUN-17 16:15:00 to 19-JUN-17 16:20:00 (EST-5)
Location: WESTMORELAND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Westmoreland.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 19-JUN-17 16:52:00 to 19-JUN-17 16:56:00 (EST-5)
Location: HANCOCK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and wires in Hancock.