A weak cold front situated along the Blue Ridge drifted eastward throughout the day and showers and thunderstorms formed over the waters.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-AUG-12 18:10:00 to 11-AUG-12 18:10:00 (EST-5)
Location: MARTIN STATE AIRPORT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 33 knots were reported at Gunpowder.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-AUG-12 18:12:00 to 11-AUG-12 18:12:00 (EST-5)
Location: MILLER ISLAND
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 34 knots were reported at Hart Miller Island.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-AUG-12 18:14:00 to 11-AUG-12 18:14:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 32 knots were reported at Hampstead Hill Academy.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-AUG-12 18:10:00 to 11-AUG-12 18:10:00 (EST-5)
Location: ORIOLE PARK AT CAMDEN YARDS
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 34 knots were reported at Oriole Park at Camden Yard.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-AUG-12 17:57:00 to 11-AUG-12 18:12:00 (EST-5)
Location: MILLER ISLAND
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 34 knots were reported at Hart Miller Island.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-AUG-12 20:30:00 to 11-AUG-12 20:30:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 34 knots were reported at Francis Scott Key Bridge.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-AUG-12 15:13:00 to 11-AUG-12 15:13:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 33 knots were reported at Bishop Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-AUG-12 15:18:00 to 11-AUG-12 15:18:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 31 knots were reported at Bishop Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-AUG-12 16:13:00 to 11-AUG-12 16:13:00 (EST-5)
Location: LOWER HOOPERS ISLAND
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 33 knots were reported at Lower Hooper Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-AUG-12 17:40:00 to 11-AUG-12 17:40:00 (EST-5)
Location: ANNAPOLIS
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts of 34 knots were measured at Annapolis.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-AUG-12 17:05:00 to 11-AUG-12 17:10:00 (EST-5)
Location: CHESAPEAKE BEACH
Magnitude: 35.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts up to 35 knots were reported at Rod and Reel Chesapeake Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-AUG-12 17:10:00 to 11-AUG-12 17:41:00 (EST-5)
Location: TOLLY POINT
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts up to 36 knots were reported at Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-AUG-12 17:00:00 to 11-AUG-12 18:00:00 (EST-5)
Location: THOMAS POINT LIGHT
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-AUG-12 17:50:00 to 11-AUG-12 18:10:00 (EST-5)
Location: PATAPSCO BUOY
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts up to 33 knots were reported at Patapsco CBIBS Buoy.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-AUG-12 18:06:00 to 11-AUG-12 18:12:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts up to 32 knots were reported at Francis Scott Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-AUG-12 16:40:00 to 11-AUG-12 18:00:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts up to 55 knots were reported at Gooses Reef CBIBS Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-AUG-12 16:06:00 to 11-AUG-12 16:48:00 (EST-5)
Location: COVE POINT
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts up to 35 knots were reported at Cove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-AUG-12 17:20:00 to 11-AUG-12 18:00:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 31 knots were reported at Annapolis CBIBS Buoy.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-AUG-12 15:50:00 to 11-AUG-12 16:00:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts up to 39 knots were measured at Point Lookout CBIBS Buoy.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-AUG-12 15:55:00 to 11-AUG-12 16:00:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts up to 35 knots were reported at Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-AUG-12 16:00:00 to 11-AUG-12 16:00:00 (EST-5)
Location: PINEY POINT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 31 knots were reported at Piney Point.