A strong cold front produced squalls that resulted in gale to near storm force wind gusts.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 11-DEC-21 17:23:00 to 11-DEC-21 17:23:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 34.00 MG
Reported by: Broadcast Media

A wind gust of 34 knots (39 MPH) was measured by the Blackwalnut Harbor WeatherFlow sensor (XBWH).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-DEC-21 17:37:00 to 11-DEC-21 17:37:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Cobb Point WeatherFlow sensor (XCOB).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-DEC-21 17:42:00 to 11-DEC-21 17:48:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the Gooses Reef CBIBS sensor (44062).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-DEC-21 18:00:00 to 11-DEC-21 18:00:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Piney Point NOS sensor (PPTM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 11-DEC-21 18:00:00 to 11-DEC-21 18:00:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots (39 MPH) was measured by the Cove Point NOS sensor (COVM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 11-DEC-21 18:05:00 to 11-DEC-21 18:05:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNHK)
Magnitude: 34.00 EG
Reported by: ASOS

A squall produced an estimated wind gust to 34 knots (39 MPH) near the ASOS at Patuxent River Naval Air Station (KNHK) adjacent to the Chesapeake Bay and tidal Patuxent River.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 11-DEC-21 18:36:00 to 11-DEC-21 18:36:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 44.00 MG
Reported by: Buoy

A wind gust of 44 knots (51 MPH) was measured by the Lower Potomac/Point Lookout CBIBS sensor (44042).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 11-DEC-21 19:00:00 to 11-DEC-21 19:18:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced estimated wind gusts to 34 knots (39 MPH) near the NOS sensor at Bishops Head Pier (BISM2).

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 11-DEC-21 20:54:00 to 11-DEC-21 21:06:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts to 39 knots (45 MPH) were measured by one of the NOS sensors on the I-695 Francis Scott Key Bridge (FSNM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 11-DEC-21 21:02:00 to 11-DEC-21 21:02:00 (EST-5)
Location: HART MILLER ISLAND (HRT)
Magnitude: 41.00 MG
Reported by: Buoy

A wind gust of 41 knots (47 MPH) was measured by the Hart Miller Island WeatherFlow sensor (XHRT).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-DEC-21 21:18:00 to 11-DEC-21 21:18:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 37.00 MG
Reported by: Buoy

A wind gust of 37 knots (43 MPH) was measured by the Occoquan River WeatherFlow sensor (XOCC).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:28:00 to 11-DEC-21 21:28:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 MG
Reported by: ASOS

A wind gust of 34 knots (39 MPH) was measured by the ASOS at the United States Naval Academy in Annapolis (KNAK) adjacent to the Chesapeake Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:30:00 to 11-DEC-21 21:42:00 (EST-5)
Location: ANNAPOLIS BUOY (44063)
Magnitude: 47.00 MG
Reported by: Broadcast Media

Wind gusts of up to 47 knots (54 MPH) were measured by the Annapolis CBIBS sensor (44063).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:32:00 to 11-DEC-21 21:32:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 46.00 MG
Reported by: Broadcast Media

A wind gust of 46 knots (53 MPH) was measured by the Thomas Point NOS sensor (TPLM2).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:33:00 to 11-DEC-21 21:38:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of up to 42 knots (48 MPH) were measured by the Tolly Point WeatherFlow sensor (XTOL).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:30:00 to 11-DEC-21 21:45:00 (EST-5)
Location: GREENBURY POINT (GBY)
Magnitude: 47.00 MG
Reported by: Buoy

Wind gusts of up to 47 knots (54 MPH) were measured by the Greenbury Point WeatherFlow sensor (XGBY).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 11-DEC-21 21:36:00 to 11-DEC-21 21:36:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Herring Bay WeatherFlow sensor (XHRB).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-DEC-21 22:13:00 to 11-DEC-21 22:13:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Potomac Light 33 WeatherFlow sensor (XLT3).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 11-DEC-21 22:17:00 to 11-DEC-21 22:17:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 34.00 EG
Reported by: Buoy

A squall produced an estimated wind gust to 34 knots (39 MPH) near the Baber Point WeatherFlow sensor (XBAB).

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 11-DEC-21 22:35:00 to 11-DEC-21 22:40:00 (EST-5)
Location: CHESAPEAKE BIOLOGICAL LABORATORY (CBIM2)
Magnitude: 45.00 MG
Reported by: Mesonet

Wind gusts of up to 45 knots (52 MPH) were measured by a mesonet on the MD-4 Thomas Johnson Bridge (MD147).

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 11-DEC-21 22:44:00 to 11-DEC-21 22:44:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNHK)
Magnitude: 36.00 MG
Reported by: ASOS

A wind gust of 36 knots (41 MPH) was measured by the ASOS at Patuxent River Naval Air Station (KNHK) adjacent to the Chesapeake Bay and tidal Patuxent River.