A cold front moved into the area triggering showers and thunderstorms. Hot and humid air ahead of the boundary caused an unstable air mass, which led to gusty winds with some thunderstorms.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 01-JUL-17 15:47:00 to 01-JUL-17 15:47:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was measured at Tolchester Beach.

Marine Hail in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 18:36:00 to 01-JUL-17 18:36:00 (EST-5)
Location: COLES POINT (COL)
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail was estimated nearby.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 01-JUL-17 16:19:00 to 01-JUL-17 16:19:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 40.00 EG
Reported by: Buoy

A wind gust of 40 knots was reported at Grove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 01-JUL-17 15:47:00 to 01-JUL-17 15:47:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 35.00 EG
Reported by: Buoy

A wind gust of 35 knots was reported at Tolchester.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 19:36:00 to 01-JUL-17 19:36:00 (EST-5)
Location: LEWISETTA (LWS)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 01-JUL-17 15:09:00 to 01-JUL-17 15:09:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 01-JUL-17 15:24:00 to 01-JUL-17 15:24:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 01-JUL-17 15:35:00 to 01-JUL-17 15:35:00 (EST-5)
Location: (KMTN)MARTIN STATE AIRPORT
Magnitude: 38.00 MG
Reported by: AWOS

A wind gust of 38 knots was reported at Martin State.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 01-JUL-17 15:48:00 to 01-JUL-17 16:00:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 01-JUL-17 15:40:00 to 01-JUL-17 15:40:00 (EST-5)
Location: ANNAPOLIS BUOY (44063)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 01-JUL-17 15:53:00 to 01-JUL-17 15:53:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 01-JUL-17 15:50:00 to 01-JUL-17 15:50:00 (EST-5)
Location: (KW29)BAY BRIDGE AIRPORT
Magnitude: 37.00 MG
Reported by: AWOS

A wind gust of 37 knots was reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 01-JUL-17 17:24:00 to 01-JUL-17 17:24:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 34.00 EG
Reported by: Buoy

A wind gusts in excess of 30 knots was reported at Cove Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 01-JUL-17 18:30:00 to 01-JUL-17 18:30:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 01-JUL-17 17:33:00 to 01-JUL-17 18:03:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 44.00 MG
Reported by: Buoy

Wind gusts up to 44 knots were reported at Potomac Light.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 01-JUL-17 17:55:00 to 01-JUL-17 17:55:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 34.00 EG
Reported by: Buoy

A wind gusts in excess of 30 knots was reported at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 01-JUL-17 17:55:00 to 01-JUL-17 18:05:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 40.00 MG
Reported by: Buoy

A wind gust of 40 knots was reported at Pylons.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 18:26:00 to 01-JUL-17 18:26:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 50.00 EG
Reported by: Trained Spotter

Wind gusts around 50 knots were estimated based on thunderstorm wind damage nearby.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 01-JUL-17 18:07:00 to 01-JUL-17 18:12:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 51.00 MG
Reported by: Buoy

Wind gusts of 38 to 51 knots were reported at Cuckold Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 01-JUL-17 18:13:00 to 01-JUL-17 18:13:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 35.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 18:19:00 to 01-JUL-17 18:19:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 19:00:00 to 01-JUL-17 19:12:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 42.00 MG
Reported by: Buoy

A wind gust of 42 knots was reported at Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 19:36:00 to 01-JUL-17 19:36:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 20:00:00 to 01-JUL-17 20:06:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 01-JUL-17 20:00:00 to 01-JUL-17 20:06:00 (EST-5)
Location: LEWISETTA (LWS)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported at Lewisetta.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 01-JUL-17 19:09:00 to 01-JUL-17 19:09:00 (EST-5)
Location: RACCOON POINT (RAC)
Magnitude: 34.00 EG
Reported by: Buoy

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