A shortwave moving out of eastern New York into northern New England produced a moderate to strong mid level jet and good height falls over moderately unstable lower layers. Good speed and some directional shear resulted in rotating cells which evolved into bows and lines. Some large hail was reported but wind damage was the main product of these storms.

Hail in COOS, NEW HAMPSHIRE
From 09-MAY-09 14:16:00 to 09-MAY-09 14:18:00 (EST-5)
Location: (BML)BERLIN MUNI ARP
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced nickel sized hail which covered the ground in Milan.

Hail in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 16:36:00 to 09-MAY-09 16:38:00 (EST-5)
Location: HANOVER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced nickel sized hail in Hanover.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 16:41:00 to 09-MAY-09 16:43:00 (EST-5)
Location: HANOVER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed numerous trees and power lines in the town of Hanover.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 16:46:00 to 09-MAY-09 16:49:00 (EST-5)
Location: FRANCONIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees and power lines in Franconia.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 09-MAY-09 17:44:00 to 09-MAY-09 17:46:00 (EST-5)
Location: LACONIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees in Wyatt Park in Laconia.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 09-MAY-09 17:25:00 to 09-MAY-09 17:29:00 (EST-5)
Location: FRANKLIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed numerous trees and power lines in Franklin.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 17:29:00 to 09-MAY-09 17:32:00 (EST-5)
Location: BRISTOL
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and power lines on Mt. Cardigan Road near Bristol.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 17:29:00 to 09-MAY-09 17:32:00 (EST-5)
Location: ALEXANDRIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees in Alexandria.

Thunderstorm Wind in MERRIMACK, NEW HAMPSHIRE
From 09-MAY-09 17:30:00 to 09-MAY-09 17:32:00 (EST-5)
Location: HORSES CORNERS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees near Horses Corners.

Thunderstorm Wind in CARROLL, NEW HAMPSHIRE
From 09-MAY-09 17:45:00 to 09-MAY-09 17:47:00 (EST-5)
Location: MADISON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees in Madison.

Thunderstorm Wind in GRAFTON, NEW HAMPSHIRE
From 09-MAY-09 17:40:00 to 09-MAY-09 17:42:00 (EST-5)
Location: ALEXANDRIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees near Alexandria.

Hail in COOS, NEW HAMPSHIRE
From 09-MAY-09 14:10:00 to 09-MAY-09 14:12:00 (EST-5)
Location: GROVETON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced nickel sized hail in Groveton.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 09-MAY-09 17:33:00 to 09-MAY-09 17:35:00 (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 on Crossmill Road near Northfield.

Thunderstorm Wind in BELKNAP, NEW HAMPSHIRE
From 09-MAY-09 17:30:00 to 09-MAY-09 17:33:00 (EST-5)
Location: LACONIA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A severe thunderstorm downed trees and wires just west of Laconia.