A strong shortwave and associated cold front was approaching the region from the northwest on the afternoon of July 18th. Strong shear combined with CAPE of 1500  to 2500 to produce numerous thunderstorms and some super cells. These storms produced damaging winds and large hail as well as a tornado in Coos County.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 18-JUL-16 14:30:00 to 18-JUL-16 14:34:00 (EST-5)
Location: DERRY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm downed large branches on Silver Street in Derry.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 18-JUL-16 14:30:00 to 18-JUL-16 14:35:00 (EST-5)
Location: LONDONDERRY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A severe thunderstorm downed trees and wires at the on-ramp of Exit 5 on I-93 in Londonderry.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 18-JUL-16 14:42:00 to 18-JUL-16 14:47:00 (EST-5)
Location: TOWLES CORNER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A severe thunderstorm downed trees and wires on 107A and Jewell Street near Towles Corner.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 18-JUL-16 14:18:00 to 18-JUL-16 14:21:00 (EST-5)
Location: WESTVILLE
Magnitude: 78.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

After surveying severe thunderstorm damage in the Town of Plaistow, the National Weather Service confirmed that the damage was caused by a microburst.  Wind gusts estimated at 80 to 90 mph snapped or uprooted hundreds of trees in the southern section of the town.  The microburst affected an area about 2 miles wide and 1.6 miles in length.  Numerous structures were damaged by falling trees.  Dozens of utility poles and wires were also downed leading to widespread power outages.

Tornado in COOS, NEW HAMPSHIRE
From 18-JUL-16 11:42:00 to 18-JUL-16 11:46:00 (EST-5)
Location: PITTSBURG
Tornado F-scale: EF0
Reported by: NWS Storm Survey

After surveying the damage from a severe thunderstorm, the National Weather Service confirmed that a tornado touched near Pittsburg.  The tornado touched down about 12:42 pm and was on the ground for about 4 minutes.  The tornado was rated and EF0 with winds estimated at about 75 mph, had a path length of about 2 miles , and a maximum path width of about 200 yards.
A concentrated path of tree damage consistent with a tornado was found just south of Back Lake to just north of the large bend in the Connecticut River north of Lake Francis State Park. Hundreds of trees were uprooted with dozens snapped. Downed trees took wires down in multiple locations.

Hail in COOS, NEW HAMPSHIRE
From 18-JUL-16 11:38:00 to 18-JUL-16 11:43:00 (EST-5)
Location: PITTSBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail in Pittsburg.

Hail in COOS, NEW HAMPSHIRE
From 18-JUL-16 12:15:00 to 18-JUL-16 12:18:00 (EST-5)
Location: COLUMBIA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm produced 1.75 inch hail in Columbia.

Hail in GRAFTON, NEW HAMPSHIRE
From 18-JUL-16 14:18:00 to 18-JUL-16 14:22:00 (EST-5)
Location: PATTENVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm produced 0.88 inch hail in Pattenville.

Thunderstorm Wind in COOS, NEW HAMPSHIRE
From 18-JUL-16 11:39:00 to 18-JUL-16 11:43:00 (EST-5)
Location: PITTSBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees on Route 3 in Pittsburg.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 18-JUL-16 14:10:00 to 18-JUL-16 14:14:00 (EST-5)
Location: SILVER LAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed numerous trees near Silver Lake in Madison.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 18-JUL-16 14:10:00 to 18-JUL-16 14:14:00 (EST-5)
Location: TAMWORTH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm snapped a large tree on Indian Trail in Tamworth.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 18-JUL-16 14:14:00 to 18-JUL-16 14:18:00 (EST-5)
Location: MANCHESTER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm downed trees on Somerville, Clay, Jewett and Amherst Streets in Manchester.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 18-JUL-16 19:03:00 to 18-JUL-16 19:07:00 (EST-5)
Location: EFFINGHAM FALLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and power lines across town in Effingham Falls.

Thunderstorm Wind in ROCKINGHAM, NEW HAMPSHIRE
From 18-JUL-16 14:18:00 to 18-JUL-16 14:23:00 (EST-5)
Location: WESTVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed trees near Westville.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 18-JUL-16 14:20:00 to 18-JUL-16 14:25:00 (EST-5)
Location: MERRIMACK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed 3 trees on Independence Drive in Merrimack.

Thunderstorm Wind in HILLSBOROUGH, NEW HAMPSHIRE
From 18-JUL-16 14:20:00 to 18-JUL-16 14:25:00 (EST-5)
Location: BEDFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A severe thunderstorm downed large trees on Route 101 in Bedford.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 18-JUL-16 14:23:00 to 18-JUL-16 14:28:00 (EST-5)
Location: EFFINGHAM FALLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A severe thunderstorm downed trees and wires on Route 153 and Brooks Drive in Effingham Falls.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 18-JUL-16 13:49:00 to 18-JUL-16 13:54:00 (EST-5)
Location: RINDGE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A severe thunderstorm downed trees throughout the town of Rindge.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 18-JUL-16 17:37:00 to 18-JUL-16 17:41:00 (EST-5)
Location: PIERMONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed numerous trees in Piermont.