A cold front passed through the area. Ahead of the front, hot and humid conditions led to an unstable atmosphere. The forcing from the cold front combined with the instability to trigger thunderstorms. Stronger shear from an upper-level trough caused some thunderstorms to produce gusty winds.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 18-JUL-16 15:09:00 to 18-JUL-16 15:19:00 (EST-5)
Location: BALTIMORE (BLTM2)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at the Baltimore Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 18-JUL-16 15:14:00 to 18-JUL-16 15:34:00 (EST-5)
Location: GUNPOWDER (GUN)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of 34 to 41 knots were reported at Gunpowder.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 18-JUL-16 15:18:00 to 18-JUL-16 15:18:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported at the Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 18-JUL-16 15:18:00 to 18-JUL-16 15:18:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 39.00 MG
Reported by: Buoy

A wind gust of 39 knots was reported at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 18-JUL-16 15:20:00 to 18-JUL-16 15:20:00 (EST-5)
Location: (KMTN)MARTIN STATE AIRPORT
Magnitude: 35.00 MG
Reported by: AWOS

A wind gust of 35 knots was reported at Martin State.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 18-JUL-16 15:30:00 to 18-JUL-16 15:30:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 35.00 MG
Reported by: Mesonet

Wind gusts up to 35 knots were reported at Grove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 18-JUL-16 15:18:00 to 18-JUL-16 15:30:00 (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 TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 18-JUL-16 15:19:00 to 18-JUL-16 15:19:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 48.00 MG
Reported by: AWOS

A wind gust of 48 knots was reported at Quantico.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 18-JUL-16 15:20:00 to 18-JUL-16 15:25:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts up to 38 knots were reported at Occoquan.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 18-JUL-16 15:20:00 to 18-JUL-16 15:34:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 40.00 MG
Reported by: ASOS

Wind gusts up to 40 knots were reported at Reagan National.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 18-JUL-16 15:30:00 to 18-JUL-16 15:40:00 (EST-5)
Location: UPPER POTOMAC BUOY (44061)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts up to 41 knots were reported at the Upper Potomac Buoy.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 18-JUL-16 15:40:00 to 18-JUL-16 15:55:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 45.00 MG
Reported by: Buoy

Wind gusts up to 45 knots were reported at Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 18-JUL-16 15:50:00 to 18-JUL-16 16:00:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 45.00 MG
Reported by: Mesonet

Wind gusts of 36 to 45 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 18-JUL-16 16:05:00 to 18-JUL-16 16:20:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported at Herring Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 18-JUL-16 16:05:00 to 18-JUL-16 16:05:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 40.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 18-JUL-16 16:05:00 to 18-JUL-16 16:05:00 (EST-5)
Location: ROD N REEL CHESAPEAKE BEACH (CHSRL)
Magnitude: 38.00 MG
Reported by: Mesonet

A wind gust of 38 knots was reported at Chrisfield.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 18-JUL-16 16:15:00 to 18-JUL-16 16:30:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts up to 35 knots were reported at Black Walnut Harbor.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 18-JUL-16 16:20:00 to 18-JUL-16 16:40:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 43.00 MG
Reported by: Buoy

A wind gust of 43 knots was reported at Gooses Reef.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 18-JUL-16 16:01:00 to 18-JUL-16 16:06:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 35.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in EASTERN BAY, ATLANTIC NORTH
From 18-JUL-16 16:11:00 to 18-JUL-16 16:11:00 (EST-5)
Location: STEVENSVILLE (D2030)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported at Crab Alley Bay.

Marine Thunderstorm Wind in EASTERN BAY, ATLANTIC NORTH
From 18-JUL-16 16:25:00 to 18-JUL-16 16:25:00 (EST-5)
Location: US-50 (MD040)
Magnitude: 37.00 MG
Reported by: Mesonet

A wind gust of 37 knots was measured at Chesterhaven.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 18-JUL-16 16:30:00 to 18-JUL-16 16:42:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 38.00 MG
Reported by: Buoy

A wind gust of 38 knots was reported at Piney Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 18-JUL-16 16:42:00 to 18-JUL-16 16:42:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 37.00 MG
Reported by: AWOS

A wind gust of 37 knots was reported at Patuxent River.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 18-JUL-16 16:55:00 to 18-JUL-16 16:55:00 (EST-5)
Location: POINT LOOKOUT (PTL)
Magnitude: 37.00 MG
Reported by: Buoy

A wind gust of 37 knots was reported at Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 18-JUL-16 17:00:00 to 18-JUL-16 17:10:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 18-JUL-16 17:44:00 to 18-JUL-16 17:44:00 (EST-5)
Location: RACCOON POINT (RAC)
Magnitude: 34.00 EG
Reported by: Buoy

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