An upper-level low over the Great lakes provided cooler air aloft. The warm and humid air at the surface combined with the cooler air aloft to allow for an unstable atmosphere. Showers and thunderstorms popped up on the 26th over the waters. The winds were strong enough aloft for some thunderstorms to trigger gusty winds.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 26-JUL-09 14:54:00 to 26-JUL-09 15:04:00 (EST-5)
Location: LOWER HOOPERS ISLAND
Magnitude: 41.00 MG
Reported by: Mesonet

Wind gusts between 36 and 41 knots were reported at Lower Hooper Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-JUL-09 14:35:00 to 26-JUL-09 14:35:00 (EST-5)
Location: PINEY POINT
Magnitude: 43.00 MG
Reported by: Mesonet

A wind gust of 43 knots was reported at Piney Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 15:12:00 to 26-JUL-09 15:38:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 51.00 MG
Reported by: Mesonet

Wind gusts between 34 and 51 knots were reported at Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 15:28:00 to 26-JUL-09 15:38:00 (EST-5)
Location: SMITH ISLAND
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gusts between 34 and 37 knots were reported at Smith Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-JUL-09 15:05:00 to 26-JUL-09 15:05:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at Point Lookout.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 15:39:00 to 26-JUL-09 15:48:00 (EST-5)
Location: RACCOON POINT
Magnitude: 44.00 MG
Reported by: Mesonet

Wind gusts between 35 and 44 knots were measured at Raccoon Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 16:36:00 to 26-JUL-09 16:36:00 (EST-5)
Location: RACCOON POINT
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Raccoon Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 16:22:00 to 26-JUL-09 16:40:00 (EST-5)
Location: CRISFIELD
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts up to 38 knots were reported at Crisfield.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 20:22:00 to 26-JUL-09 20:22:00 (EST-5)
Location: CRISFIELD
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Crisfield.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 20:38:00 to 26-JUL-09 20:38:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Bishops Head.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-JUL-09 15:06:00 to 26-JUL-09 15:06:00 (EST-5)
Location: LEWISETTA
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was measured at Lewisetta.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 15:40:00 to 26-JUL-09 15:50:00 (EST-5)
Location: CRISFIELD
Magnitude: 43.00 MG
Reported by: Mesonet

Wind gusts up to 43 knots were reported at Crisfield.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-JUL-09 16:21:00 to 26-JUL-09 16:21:00 (EST-5)
Location: SMITH ISLAND
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at Smith Island.