Low pressure passed through the area on the 14th. The low tracked along a boundary that separated warm and humid air to the south and west from cooler marine air to the north and east. The warm and humid air led to an unstable atmosphere, and there was enough instability for storms to produce gusty winds.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 18:25:00 to 14-MAY-18 18:30:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 38.00 MG
Reported by: Buoy

A wind gust of 38 knots was reported at Cuckold Creek.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 14-MAY-18 19:00:00 to 14-MAY-18 19:00:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported at Solomons Island.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 17:42:00 to 14-MAY-18 17:42:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 38.00 MG
Reported by: AWOS

A wind gust of 38 knots was reported at Quantico.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:03:00 to 14-MAY-18 19:03:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNAK)
Magnitude: 34.00 MG
Reported by: AWOS

A wind gust of 34 knot was reported at Patuxent River (KNHK).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:06:00 to 14-MAY-18 19:12:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 41.00 MG
Reported by: Mesonet

Wind gusts of 37 to 41 knots were reported at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:06:00 to 14-MAY-18 19:12:00 (EST-5)
Location: LEWISETTA (LWS)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of 37 to 41 knots were reported at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:12:00 to 14-MAY-18 19:12:00 (EST-5)
Location: ST INIGOES (KNUI)
Magnitude: 42.00 MG
Reported by: AWOS

A wind gust of 42 knots was reported at St. Inigoes.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 14-MAY-18 19:12:00 to 14-MAY-18 19:30:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 40.00 MG
Reported by: Buoy

Wind gusts of 38 to 40 knots were reported at Cove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:19:00 to 14-MAY-18 19:24:00 (EST-5)
Location: POINT LOOKOUT (PTL)
Magnitude: 45.00 MG
Reported by: Buoy

Wind gusts of 35 to 45 knots were reported at Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 17:40:00 to 14-MAY-18 17:45:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts up to 41 knots were reported at Occoquan.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 14-MAY-18 17:49:00 to 14-MAY-18 17:49:00 (EST-5)
Location: LYLES-CROUCH ACADEMY (AXDRA)
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at Lyels-Crouch Academy.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 14-MAY-18 17:49:00 to 14-MAY-18 17:49:00 (EST-5)
Location: TC WILLIAMS HS (ALXNK)
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at T.C. Williams High School.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 19:30:00 to 14-MAY-18 19:30:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 43.00 MG
Reported by: Buoy

A wind gust of 43 knots was reported at Potomac Point Lookout.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 14-MAY-18 19:42:00 to 14-MAY-18 19:42:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 MG
Reported by: Mesonet

A wind gust of 34 knot was reported at Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 14-MAY-18 19:48:00 to 14-MAY-18 20:00:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 39.00 MG
Reported by: Mesonet

Wind gusts up to 35 knots were reported at Bishops Head.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 14-MAY-18 17:51:00 to 14-MAY-18 18:25:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 EG
Reported by: ASOS

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

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 14-MAY-18 18:10:00 to 14-MAY-18 18:10:00 (EST-5)
Location: LONG BRANCH ES (ARLNL)
Magnitude: 37.00 MG
Reported by: Mesonet

A wind gust of 37 knots was reported at Hoffman-Boston Elementary School.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 14-MAY-18 18:20:00 to 14-MAY-18 18:25:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gusts up to 37 knots were reported at Nationals Park.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 18:21:00 to 14-MAY-18 18:41:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at Potomac Light.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 18:22:00 to 14-MAY-18 18:32:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was reported at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 18:23:00 to 14-MAY-18 18:38:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts up to 41 knots were reported at Pylons DAH.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 18:34:00 to 14-MAY-18 18:44:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 36.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 14-MAY-18 18:36:00 to 14-MAY-18 18:46:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at Monroe Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 14-MAY-18 18:54:00 to 14-MAY-18 19:00:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of 37 to 42 knots were reported at Piney Point.