A hot and humid air mass remained over the waters on the 5th. A series of upper-level disturbances in a zonal flow passed through the Mid-Atlantic during this time. Showers and thunderstorms developed during the afternoon and evening hours. There was enough instability from the hot and humid air mass for some thunderstorms to contain gusty winds.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 17:05:00 to 05-AUG-10 17:05:00 (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 05-AUG-10 16:35:00 to 05-AUG-10 16:35:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 34.00 EG
Reported by: Mesonet

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:35:00 to 05-AUG-10 16:45:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 45.00 MG
Reported by: Mesonet

Wind gusts between 36 and 45 knots were reported at Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:48:00 to 05-AUG-10 17:00:00 (EST-5)
Location: PINEY POINT
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts between 34 and 42 knots were reported at Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 05-AUG-10 16:22:00 to 05-AUG-10 16:22:00 (EST-5)
Location: COBB POINT
Magnitude: 52.00 EG
Reported by: Fire Department/Rescue

Wind gusts of 52 knots were estimated near Cobb Island due to thunderstorm wind damage.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:48:00 to 05-AUG-10 16:48:00 (EST-5)
Location: POTOMAC BUOY
Magnitude: 42.00 MG
Reported by: Buoy

A wind gust of 42 knots was reported at the Lower Potomac Buoy.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 05-AUG-10 14:40:00 to 05-AUG-10 14:40:00 (EST-5)
Location: LYLES-CROUCH ACADEMY ALEXANDRIA
Magnitude: 75.00 EG
Reported by: Trained Spotter

Wind gusts were estimated up to 75 due to thunderstorm wind damage.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 05-AUG-10 14:40:00 to 05-AUG-10 14:40:00 (EST-5)
Location: LYLES-CROUCH ACADEMY ALEXANDRIA
Magnitude: 75.00 EG
Reported by: Trained Spotter

Wind gusts were estimated up to 75 due to thunderstorm wind damage.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 05-AUG-10 14:40:00 to 05-AUG-10 15:00:00 (EST-5)
Location: LYLES-CROUCH ACADEMY ALEXANDRIA
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts up to 42 knots were measured at the Upper Potomac Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 05-AUG-10 15:40:00 to 05-AUG-10 16:00:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts up to 42 knots were measured at Gooses Reef Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:30:00 to 05-AUG-10 16:30:00 (EST-5)
Location: LOWER HOOPERS ISLAND
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots was measured at Lower Hoopers Island.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 05-AUG-10 15:57:00 to 05-AUG-10 15:57:00 (EST-5)
Location: HORN POINT
Magnitude: 42.00 MG
Reported by: Mesonet

A wind gust of 42 knots was measured about seven miles north-northwest of Bellevue.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 05-AUG-10 14:36:00 to 05-AUG-10 14:59:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 51.00 MG
Reported by: ASOS

Wind gust up to 51 knots were reported at Reagan National.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:54:00 to 05-AUG-10 17:00:00 (EST-5)
Location: LEWISETTA
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 05-AUG-10 17:01:00 to 05-AUG-10 17:01:00 (EST-5)
Location: US NAVAL ACADEMY
Magnitude: 35.00 MG
Reported by: ASOS

A wind gust of 35 knots was reported at Annapolis.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 17:01:00 to 05-AUG-10 17:01:00 (EST-5)
Location: PATUXENT RIVER ASOS
Magnitude: 35.00 EG
Reported by: ASOS

A wind gust of 35 knots was estimated near the Patuxent River Naval Air Station.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 05-AUG-10 17:06:00 to 05-AUG-10 17:06:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots was measured about twelve miles north-northeast of Smith Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 19:05:00 to 05-AUG-10 19:05:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 34.00 EG
Reported by: Mesonet

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

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 17:08:00 to 05-AUG-10 17:08:00 (EST-5)
Location: PATUXENT RIVER ASOS
Magnitude: 35.00 MG
Reported by: ASOS

A wind gust of 35 knots was measured at Patuxent River.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 05-AUG-10 16:48:00 to 05-AUG-10 17:00:00 (EST-5)
Location: PINEY POINT
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts up to 36 knots were measured at Piney Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 05-AUG-10 15:30:00 to 05-AUG-10 15:30:00 (EST-5)
Location: CHESAPEAKE BEACH
Magnitude: 37.00 MG
Reported by: Mesonet

A wind gust of 37 knots was measured at Chesapeake Beach.