A warm front was draped across central New Hampshire into the foothills of western Maine on the morning of August 3rd. South of this boundary, a warm and very humid air mass was in place and convection began developing by late morning in the unstable warm sector. Due to the high precipitable water values, several of these storms produced wet micro bursts and damaging winds along with a few reports of hail. Some isolated flash flooding also occurred with these storms.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 03-AUG-18 14:30:00 to 03-AUG-18 14:35:00 (EST-5)
Location: SOUTH SUTTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires  in South Sutton.

Thunderstorm Wind in CHESHIRE, NEW HAMPSHIRE
From 03-AUG-18 14:45:00 to 03-AUG-18 14:50:00 (EST-5)
Location: GILSUM
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm downed trees and produced penny size hail in Gilsum.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 03-AUG-18 15:05:00 to 03-AUG-18 15:10:00 (EST-5)
Location: FRANKLIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm downed power lines on Salisbury Road in Franklin.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 03-AUG-18 15:10:00 to 03-AUG-18 15:15:00 (EST-5)
Location: TILTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires in Tilton.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 03-AUG-18 15:17:00 to 03-AUG-18 15:22:00 (EST-5)
Location: BELMONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires on Clark Street in Belmont.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 03-AUG-18 15:35:00 to 03-AUG-18 15:39:00 (EST-5)
Location: GILMANTON
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

A severe thunderstorm  produced a microburst in the area immediately around Sawyer Lake in Gilmanton with the greatest observed damage along Woods Road on the west  side of the lake.  Numerous large trees were snapped or uprooted by the microburst with several homes or cottages damaged by falling trees.  Residents in the area reported that very heavy rain and nickel-sized hail accompanied the strong winds.  The area damaged by the microburst was estimated to be 1100 yards long and 500 yards with maximum wind gusts of 80 mph.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 03-AUG-18 15:25:00 to 03-AUG-18 15:30:00 (EST-5)
Location: HOOKSETT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm downed trees and wires in Hooksett.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 03-AUG-18 15:25:00 to 03-AUG-18 15:30:00 (EST-5)
Location: BELMONT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed multiple trees and wires at 208 Shaker Road in Belmont.

Hail in STRAFFORD, NEW HAMPSHIRE
From 03-AUG-18 16:35:00 to 03-AUG-18 16:40:00 (EST-5)
Location: MADBURY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A thunderstorm produced 0.75 inch hail in Madbury.

Hail in BELKNAP, NEW HAMPSHIRE
From 03-AUG-18 15:35:00 to 03-AUG-18 15:40:00 (EST-5)
Location: GILMANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm produced 1 inch hail in Gilmanton.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 03-AUG-18 15:45:00 to 03-AUG-18 15:50:00 (EST-5)
Location: (CON)CONCORD MUNI AR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed  a tree on Manchester Street in Concord.