A cold front moved through southern New England, producing showers and thunderstorms that became severe as they moved across southeastern Massachusetts. Large hail and damaging winds affected southeast Massachusetts, Cape Cod, and the waters off the Cape. A strong microburst produced significant damage in Acushnet.

Marine Thunderstorm Wind in MERRIMACK RIVER MA AND OUT 20NM TO PLYMOUTH MA AND OUT 40NM, ATLANTIC NORTH
From 19-AUG-08 11:18:00 to 19-AUG-08 11:18:00 (EST-5)
Location: MINOT LIGHT
Magnitude: 49.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The weatherflow reporting station at Duxbury recorded a wind gust of 56 mph.  No damage was reported.

Marine Thunderstorm Wind in CAPE COD BAY, ATLANTIC NORTH
From 19-AUG-08 11:45:00 to 19-AUG-08 11:45:00 (EST-5)
Location: BREWSTER
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Two small sailboats carrying a total of about seven people struggled to get back to shore.  One capsized and then was assisted back to shore by a power boat.

Marine Thunderstorm Wind in PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20NM, ATLANTIC NORTH
From 19-AUG-08 11:56:00 to 19-AUG-08 12:06:00 (EST-5)
Location: PROVINCETOWN
Magnitude: 45.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Two small boats capsized in strong winds off the east coast of Cape Cod.  A few minutes later, the weatherflow reporting station at Wellfleet recorded a wind gust of 52 mph.

Marine Hail in PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20NM, ATLANTIC NORTH
From 19-AUG-08 12:15:00 to 19-AUG-08 12:15:00 (EST-5)
Location: PROVINCETOWN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Marine Thunderstorm Wind in CAPE COD BAY, ATLANTIC NORTH
From 19-AUG-08 12:19:00 to 19-AUG-08 12:19:00 (EST-5)
Location: BREWSTER
Magnitude: 35.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A small boat capsized in Cape Cod Bay.

Marine Hail in PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20NM, ATLANTIC NORTH
From 19-AUG-08 12:30:00 to 19-AUG-08 12:30:00 (EST-5)
Location: PROVINCETOWN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Marine Thunderstorm Wind in PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20NM, ATLANTIC NORTH
From 19-AUG-08 12:30:00 to 19-AUG-08 12:30:00 (EST-5)
Location: PROVINCETOWN
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Boaters reported 60 mph winds and golfball sized hail well off the coast of Cape Cod.

Marine Thunderstorm Wind in NANTUCKET SOUND, ATLANTIC NORTH
From 19-AUG-08 15:51:00 to 19-AUG-08 15:51:00 (EST-5)
Location: HYANNISPORT
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

The Cape Wind anemometer at Horseshoe Shoals tower recorded a wind gust of 47 mph.

Marine Thunderstorm Wind in NANTUCKET SOUND, ATLANTIC NORTH
From 19-AUG-08 15:00:00 to 19-AUG-08 15:00:00 (EST-5)
Location: HYANNISPORT
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

The Cape Wind anemometer at Horseshoe Shoals tower recorded a wind gust of 47 mph.