An upper-level trough passed through the waters on the 11th. Cold air aloft associated with the trough provided limited instability. The instability trigger showers over the waters and some of the showers were able to mix down gusty winds from aloft.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 11-FEB-12 15:07:00 to 11-FEB-12 15:07:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 38.00 MG
Reported by: ASOS

A wind gust of 38 knots was reported at Reagan National Airport.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-FEB-12 15:09:00 to 11-FEB-12 15:09:00 (EST-5)
Location: QUANTICO
Magnitude: 37.00 MG
Reported by: AWOS

A wind gust of 37 knots was reported at Quantico.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-FEB-12 16:12:00 to 11-FEB-12 16:12:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at the Francis Scott Key Bridge.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-FEB-12 17:18:00 to 11-FEB-12 17:18:00 (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 CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-FEB-12 16:36:00 to 11-FEB-12 17:00:00 (EST-5)
Location: COVE POINT
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were measured at Cove Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-FEB-12 17:51:00 to 11-FEB-12 17:51:00 (EST-5)
Location: CRISFIELD
Magnitude: 39.00 MG
Reported by: Mesonet

A wind gust of 39 knots was measured at Crisfield.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-FEB-12 17:24:00 to 11-FEB-12 17:24:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 34.00 EG
Reported by: Mesonet

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

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 16:36:00 to 11-FEB-12 16:36:00 (EST-5)
Location: PATUXENT RIVER ASOS
Magnitude: 39.00 MG
Reported by: ASOS

A wind gust of 39 knots was measured at Patuxent River.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 17:59:00 to 11-FEB-12 17:59:00 (EST-5)
Location: PATUXENT RIVER ASOS
Magnitude: 34.00 EG
Reported by: ASOS

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 16:42:00 to 11-FEB-12 16:54:00 (EST-5)
Location: PINEY POINT
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 17:24:00 to 11-FEB-12 18:06:00 (EST-5)
Location: PINEY POINT
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts up to 41 knots were measured at Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 16:55:00 to 11-FEB-12 17:00:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 35.00 MG
Reported by: Mesonet

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 17:35:00 to 11-FEB-12 18:10:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were measured at Point Lookout.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-FEB-12 16:48:00 to 11-FEB-12 17:12:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts up to 36 knots were reported at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-FEB-12 17:42:00 to 11-FEB-12 18:12:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts up to 36 knots were reported at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-FEB-12 17:00:00 to 11-FEB-12 17:00:00 (EST-5)
Location: THOMAS POINT LIGHT
Magnitude: 36.00 MG
Reported by: C-MAN Station

A wind gust of 36 knots was reported at the Thomas Point Lighthouse.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-FEB-12 17:05:00 to 11-FEB-12 17:15:00 (EST-5)
Location: BABAR POINT
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were measured at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-FEB-12 15:50:00 to 11-FEB-12 15:50:00 (EST-5)
Location: MONROE CREEK
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots was measured at Monroe Creek.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-FEB-12 16:28:00 to 11-FEB-12 16:28:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 34.00 EG
Reported by: Mesonet

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

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 11-FEB-12 11:49:00 to 11-FEB-12 11:49:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 MG
Reported by: ASOS

A wind gust of 34 knots was measured at Reagan National Airport.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 16:36:00 to 11-FEB-12 16:36:00 (EST-5)
Location: LEWISETTA
Magnitude: 38.00 MG
Reported by: Buoy

A wind gust of 38 knots was reported at Lewisetta.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 11-FEB-12 17:18:00 to 11-FEB-12 17:24:00 (EST-5)
Location: CAMBRIDGE
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts of 34 knots were measured at Cambridge.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-FEB-12 15:50:00 to 11-FEB-12 16:15:00 (EST-5)
Location: PINEY POINT
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gusts of 37 knots were measured at Cobb Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-FEB-12 15:35:00 to 11-FEB-12 15:45:00 (EST-5)
Location: BABAR POINT
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gusts up to 37 knots were measured at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 11-FEB-12 15:00:00 to 11-FEB-12 15:12:00 (EST-5)
Location: WASHINGTON NATIONALS PARK
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts up to 37 knots were measured.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-FEB-12 17:48:00 to 11-FEB-12 18:00:00 (EST-5)
Location: COVE POINT
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were measured at Cove Point.