A potent short wave trough crossed the region as it rounded the base of a long wave trough centered north over Hudson Bay. A powerful 150+ kt jet aloft provided more than enough dynamic support for the development of organized convection, with a surface low deepening as it tracked eastward across southern Quebec.  An anomalous warm and moist airmass for October allowed temperatures to reach near 70 across southern New Hampshire.  An organized squall line developed across New York and quickly tracked across southern New England with southern New Hampshire being on the northern edge of this damaging derecho squall line that brought widespread damage from Albany New York to Cape Cod.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 07-OCT-20 16:00:00 to 07-OCT-20 16:05:00 (EST-5)
Location: WEBB
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported on West Hill Rd.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 07-OCT-20 16:02:00 to 07-OCT-20 16:07:00 (EST-5)
Location: WEBB
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm brought damaging winds with numerous reports of downed trees and powerlines being reported in Swanzey.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 07-OCT-20 16:25:00 to 07-OCT-20 16:30:00 (EST-5)
Location: MASON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported southwest of Mason.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 07-OCT-20 16:27:00 to 07-OCT-20 16:32:00 (EST-5)
Location: SOUTH BROOKING
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported on Worcester Rd. in Hollis.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 07-OCT-20 16:27:00 to 07-OCT-20 16:32:00 (EST-5)
Location: EAST MILFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported southeast of Milford.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 07-OCT-20 16:50:00 to 07-OCT-20 16:55:00 (EST-5)
Location: HAMPSTEAD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees being reported on Boulder Cove Rd. in Hampstead.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 07-OCT-20 15:54:00 to 07-OCT-20 15:59:00 (EST-5)
Location: WINCHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm brought damaging winds with numerous reports of trees and wires down in Winchester.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 07-OCT-20 15:57:00 to 07-OCT-20 16:02:00 (EST-5)
Location: RICHMOND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported in Richmond.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 07-OCT-20 16:05:00 to 07-OCT-20 16:10:00 (EST-5)
Location: FITZWILLIAM DEPOT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm brought damaging winds with downed trees and powerlines being reported in south of Fitzwilliam.