A cold front passed through the area during the 3rd. A southerly flow ahead of the front caused enough warm and moist air for moderate instability to develop. The combination of lift associated with the front and instability triggered showers and thunderstorms. Some thunderstorms produced gusty winds.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-JUL-11 21:06:00 to 03-JUL-11 21:06:00 (EST-5)
Location: PINEY POINT
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported at Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-JUL-11 21:25:00 to 03-JUL-11 21:45:00 (EST-5)
Location: PINEY POINT
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts up to 38 knots were reported at Cobb Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-JUL-11 21:04:00 to 03-JUL-11 21:04:00 (EST-5)
Location: POTOMAC LIGHT
Magnitude: 34.00 MG
Reported by: Mesonet

A wind gust of 34 knots was reported at the Potomac Lighthouse.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-JUL-11 03:10:00 to 03-JUL-11 03:10:00 (EST-5)
Location: ANNAPOLIS
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was reported at the Annapolis Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-JUL-11 19:00:00 to 03-JUL-11 19:00:00 (EST-5)
Location: THOMAS POINT LIGHT
Magnitude: 43.00 MG
Reported by: Buoy

A wind gust of 43 knots was reported at Thomas Point Lighthouse.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-JUL-11 18:05:00 to 03-JUL-11 18:15:00 (EST-5)
Location: THOMAS POINT LIGHT
Magnitude: 37.00 MG
Reported by: Mesonet

A wind gust of 37 knots was reported at Herring Bay.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-JUL-11 19:13:00 to 03-JUL-11 19:13:00 (EST-5)
Location: QUANTICO
Magnitude: 40.00 MG
Reported by: ASOS

A wind gust of 40 knots was reported at Quantico.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-JUL-11 19:55:00 to 03-JUL-11 20:10:00 (EST-5)
Location: BABAR POINT
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gust up to 37 knots were reported at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-JUL-11 20:03:00 to 03-JUL-11 20:03:00 (EST-5)
Location: POTOMAC LIGHT
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots was reported at the Potomac Lighthouse.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-JUL-11 19:43:00 to 03-JUL-11 19:43:00 (EST-5)
Location: BABAR POINT
Magnitude: 52.00 EG
Reported by: Unknown

A wind gust was estimated to be around 60 mph due to thunderstorm wind damage nearby.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-JUL-11 17:36:00 to 03-JUL-11 17:36:00 (EST-5)
Location: WASHINGTON NATIONALS PARK
Magnitude: 48.00 EG
Reported by: Mesonet

A wind gust of 48 knots was reported.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-JUL-11 17:31:00 to 03-JUL-11 17:31:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 45.00 EG
Reported by: ASOS

A wind gust of 45 knots was reported at Reagan National.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-JUL-11 17:34:00 to 03-JUL-11 17:34:00 (EST-5)
Location: WASHINGTON NATIONALS PARK
Magnitude: 46.00 EG
Reported by: Mesonet

A wind gust of 46 knots was reported at Nationals Park.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-JUL-11 17:29:00 to 03-JUL-11 17:29:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 50.00 EG
Reported by: Unknown

Wind gust around 50 knots were estimated due to thunderstorm wind damage nearby.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-JUL-11 21:35:00 to 03-JUL-11 21:55:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 40.00 EG
Reported by: Mesonet

Wind gusts up to 40 knots were reported at Point Lookout.