A weak boundary moved into the area, but hot and humid conditions led to moderate to high amounts of instability. An upper-level trough increased winds aloft which caused storms associated with the boundary to produce gusty winds.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-17 13:34:00 to 22-JUL-17 13:39:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts up to 36 knots were measured at Nationals Park.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-17 13:35:00 to 22-JUL-17 13:38:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 42.00 MG
Reported by: ASOS

Wind gusts of 36 to 42 knots were reported at Reagan National.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-17 13:36:00 to 22-JUL-17 13:42:00 (EST-5)
Location: WASHINGTON DC (WASD2)
Magnitude: 37.00 MG
Reported by: Mesonet

Wind gusts up to 37 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:03:00 to 22-JUL-17 14:18:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 44.00 MG
Reported by: Buoy

Wind gusts up to 44 knots were reported at Herring Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:09:00 to 22-JUL-17 14:14:00 (EST-5)
Location: GREENBERRY POINT (GBY)
Magnitude: 44.00 MG
Reported by: Buoy

Wind gusts up to 44 knots were reported at Greenberry Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:11:00 to 22-JUL-17 14:16:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 40.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:15:00 to 22-JUL-17 14:20:00 (EST-5)
Location: KENT ISLAND (KNT)
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts of 37 to 43 knots were reported at Kent Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:20:00 to 22-JUL-17 14:20:00 (EST-5)
Location: ANNAPOLIS BUOY (44063)
Magnitude: 37.00 MG
Reported by: Buoy

A wind gust of 37 knots was reported at the Annapolis Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 14:25:00 to 22-JUL-17 14:25:00 (EST-5)
Location: (KW29)BAY BRIDGE AIRPORT
Magnitude: 35.00 MG
Reported by: AWOS

A wind gust of 35 knots was reported at the Bay Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 15:00:00 to 22-JUL-17 15:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 49.00 MG
Reported by: Buoy

A wind gust of 49 knots was reported at Thomas Point Lighthouse.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 22-JUL-17 14:26:00 to 22-JUL-17 14:36:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 40.00 MG
Reported by: Buoy

Wind gusts up to 40 knots were reported at Black Walnut Harbor.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 14:30:00 to 22-JUL-17 14:40:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts of 37 to 43 knots were reported at Gooses Reef.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 22-JUL-17 15:19:00 to 22-JUL-17 15:19:00 (EST-5)
Location: LOWER HOOPERS ISLAND (HPR)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 17:40:00 to 22-JUL-17 17:40:00 (EST-5)
Location: ROD N REEL CHESAPEAKE BEACH (CHSRL)
Magnitude: 37.00 MG
Reported by: Mesonet

A wind gust of 37 knots was reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 17:48:00 to 22-JUL-17 17:48:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was reported at Herring Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 17:50:00 to 22-JUL-17 18:00:00 (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 CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 22-JUL-17 17:56:00 to 22-JUL-17 17:56:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 34.00 EG
Reported by: Buoy

A wind gusts in excess of 30 knots was reported at Black Walnut Harbor.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-17 18:00:00 to 22-JUL-17 18:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 18:00:00 to 22-JUL-17 18:18:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 46.00 MG
Reported by: Buoy

Wind gusts of 34 to 46 knots were reported at Cove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 17:54:00 to 22-JUL-17 18:09:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Cobb Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 18:06:00 to 22-JUL-17 18:06:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNAK)
Magnitude: 34.00 EG
Reported by: AWOS

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

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 22-JUL-17 19:28:00 to 22-JUL-17 19:28:00 (EST-5)
Location: CRISFIELD CG (CRS)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 21:40:00 to 22-JUL-17 21:40:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 22-JUL-17 21:42:00 to 22-JUL-17 21:42:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots was reported at Cove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 22:19:00 to 22-JUL-17 22:24:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of 40 to 42 knots were reported at Cobb Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 22:42:00 to 22-JUL-17 22:42:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 22:54:00 to 22-JUL-17 22:54:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was reported Lewisetta.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 22:52:00 to 22-JUL-17 22:52:00 (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 TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 23:10:00 to 22-JUL-17 23:40:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts up to 39 knots were reported.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-17 23:30:00 to 22-JUL-17 23:40:00 (EST-5)
Location: POINT LOOKOUT (PTL)
Magnitude: 40.00 MG
Reported by: Buoy

Wind gusts up to 40 knots were reported at Point Lookout.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 22-JUL-17 23:53:00 to 23-JUL-17 00:03:00 (EST-5)
Location: CRISFIELD CG (CRS)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 23-JUL-17 00:00:00 to 23-JUL-17 00:00:00 (EST-5)
Location: CRISFIELD FIRE DEPARTMENT (CRSFL)
Magnitude: 34.00 EG
Reported by: Mesonet

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

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 23-JUL-17 13:33:00 to 23-JUL-17 13:33:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was reported at Herring Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 23-JUL-17 14:00:00 to 23-JUL-17 14:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 23-JUL-17 14:01:00 to 23-JUL-17 14:06:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts up to 41 knots were reported at Black Walnut Harbor.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 23-JUL-17 17:24:00 to 23-JUL-17 17:24:00 (EST-5)
Location: LONG BRANCH ES (ARLNL)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported.