A cold front passed through on the 17th, and southwest winds ahead of the boundary led to an unstable atmosphere. The instability combined with the lift from the cold front to gusty winds from thunderstorms.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 17-JUL-18 14:46:00 to 17-JUL-18 14:46:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots was reported near Dahlgren.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 17-JUL-18 15:31:00 to 17-JUL-18 15:31:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNAK)
Magnitude: 34.00 EG
Reported by: AWOS

A wind gust in excess of 30 knots was reported at Patuxent River (KNHK).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 17-JUL-18 15:40:00 to 17-JUL-18 15:50:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at Gooses Reef.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 17-JUL-18 15:48:00 to 17-JUL-18 15:54:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts up to 37 knots were reported at Cove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 17-JUL-18 14:04:00 to 17-JUL-18 14:04:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 34.00 EG
Reported by: AWOS

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

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 17-JUL-18 14:18:00 to 17-JUL-18 14:18:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 35.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 17-JUL-18 14:31:00 to 17-JUL-18 14:33:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 36.00 MG
Reported by: 911 Call Center

Wind gusts of 35 to 36 knots were reported at Reagan National.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 17-JUL-18 14:39:00 to 17-JUL-18 14:39:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at Nationals Park.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 17-JUL-18 14:39:00 to 17-JUL-18 14:39:00 (EST-5)
Location: LYLES-CROUCH ACADEMY (AXDRA)
Magnitude: 35.00 MG
Reported by: Mesonet

A wind gust of 35 knots was reported at Lyles Crouch Academy.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 17-JUL-18 14:43:00 to 17-JUL-18 14:43:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was reported at Pylons DAH.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 17-JUL-18 14:46:00 to 17-JUL-18 14:46:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots was reported at Potomac Light.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 17-JUL-18 15:00:00 to 17-JUL-18 15:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 37.00 MG
Reported by: Buoy

A wind gust of 37 knots was reported at Thomas Point Lighthouse.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 17-JUL-18 15:09:00 to 17-JUL-18 15:19:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of 38 to 41 knots were reported at Cobb Point.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 17-JUL-18 15:24:00 to 17-JUL-18 15:36:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts up to 36 knots were reported at Solomons Island.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 17-JUL-18 15:34:00 to 17-JUL-18 15:34:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 36.00 MG
Reported by: Buoy

A wind gust of 36 knots was reported at Black Walnut Harbor.