Low pressure tracked along a boundary and passed through the area on the 12th. Warm and humid air on the southern side of the boundary led to an unstable atmosphere. Some storms produced gusty winds.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 12-MAY-18 19:05:00 to 12-MAY-18 19:05:00 (EST-5)
Location: MORRELL PARK SCHOOL (BLTIM)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported at Morrell Park.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 12-MAY-18 19:06:00 to 12-MAY-18 19:12:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 55.00 MG
Reported by: Buoy

Wind gusts of 34 to 55 knots were reported at Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 12-MAY-18 19:12:00 to 12-MAY-18 19:22:00 (EST-5)
Location: HART MILLER ISLAND (HRT)
Magnitude: 52.00 MG
Reported by: Buoy

Wind gusts up to 52 knots were reported at Hart Miller Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 12-MAY-18 19:33:00 to 12-MAY-18 19:48:00 (EST-5)
Location: SANDY POINT (SPT)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of 34 to 42 knots were reported at Sandy Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 19:35:00 to 12-MAY-18 19:55:00 (EST-5)
Location: (KW29)BAY BRIDGE AIRPORT
Magnitude: 41.00 MG
Reported by: AWOS

Wind gusts up to 41 knots were reported at the Bay Bridge Airport.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 12-MAY-18 21:09:00 to 12-MAY-18 21:19:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts up to 43 knots were reported at Cobb Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 19:37:00 to 12-MAY-18 20:12:00 (EST-5)
Location: KENT ISLAND (KNT)
Magnitude: 43.00 MG
Reported by: AWOS

Wind gusts up to 43 knots were reported at Kent Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 19:39:00 to 12-MAY-18 20:04:00 (EST-5)
Location: GREENBERRY POINT (GBY)
Magnitude: 53.00 MG
Reported by: Buoy

Wind gusts up to 53 knots were reported at Greenberry Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 19:41:00 to 12-MAY-18 19:42:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 54.00 MG
Reported by: ASOS

Wind gusts of 50 to 54 knots were reported at Annapolis.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 12-MAY-18 21:09:00 to 12-MAY-18 21:09:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNAK)
Magnitude: 36.00 MG
Reported by: AWOS

A wind gust of 36 knots was reported at Patuxent River (KNHK).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 12-MAY-18 21:10:00 to 12-MAY-18 21:10:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 37.00 MG
Reported by: Buoy

A wind gust of 37 knots was reported at Gooses Reef.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 12-MAY-18 21:18:00 to 12-MAY-18 21:18:00 (EST-5)
Location: LOWER HOOPERS ISLAND (HPR)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 12-MAY-18 21:24:00 to 12-MAY-18 21:24:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 35.00 MG
Reported by: Buoy

A wind gust of 35 knots was reported at Bishops Head.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 12-MAY-18 21:30:00 to 12-MAY-18 21:40:00 (EST-5)
Location: POTOMAC POINT LOOKOUT BUOY (44042)
Magnitude: 37.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 12-MAY-18 21:39:00 to 12-MAY-18 21:39:00 (EST-5)
Location: POINT LOOKOUT (PTL)
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 12-MAY-18 21:50:00 to 12-MAY-18 22:15:00 (EST-5)
Location: CRISFIELD FIRE DEPARTMENT (CRSFL)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 19:41:00 to 12-MAY-18 20:01:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 37.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 20:00:00 to 12-MAY-18 20:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 47.00 MG
Reported by: Buoy

A wind gust of 47 knots was reported at Thomas Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 12-MAY-18 20:05:00 to 12-MAY-18 20:15:00 (EST-5)
Location: ROD N REEL CHESAPEAKE BEACH (CHSRL)
Magnitude: 35.00 MG
Reported by: Mesonet

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

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 12-MAY-18 20:08:00 to 12-MAY-18 20:13:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts of 36 to 37 knots were reported at Black Walnut Harbor.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 12-MAY-18 20:18:00 to 12-MAY-18 20:48:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts up to 36 knots were reported at Black Walnut Harbor.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 12-MAY-18 20:30:00 to 12-MAY-18 21:00:00 (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 TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 12-MAY-18 20:46:00 to 12-MAY-18 20:56:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Potomac Light.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 12-MAY-18 20:48:00 to 12-MAY-18 21:00:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts up to 43 knots were reported at Cove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 12-MAY-18 18:42:00 to 12-MAY-18 19:18:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts up to 42 knots were reported at Tolchester.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 12-MAY-18 18:54:00 to 12-MAY-18 19:00:00 (EST-5)
Location: BALTIMORE (BLTM2)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 12-MAY-18 18:59:00 to 12-MAY-18 19:05:00 (EST-5)
Location: LAKELAND ES AND MS (BLTLK)
Magnitude: 35.00 MG
Reported by: Mesonet

Wind gusts up to 35 knots were reported at Lakeland Elementary School.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 12-MAY-18 19:01:00 to 12-MAY-18 19:01:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 34.00 EG
Reported by: Buoy

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

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 12-MAY-18 19:05:00 to 12-MAY-18 19:05:00 (EST-5)
Location: HAMPSTEAD HILL ACADEMY (BLMHH)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported at Hampstead Hill Academy.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 12-MAY-18 20:52:00 to 12-MAY-18 20:52:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of 35 knots were reported at Baber Point.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 12-MAY-18 20:54:00 to 12-MAY-18 21:00:00 (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 12-MAY-18 20:58:00 to 12-MAY-18 21:03:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Pylons DAH.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 12-MAY-18 21:00:00 to 12-MAY-18 21:05:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 12-MAY-18 21:00:00 to 12-MAY-18 21:06:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Solomons Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 12-MAY-18 21:00:00 to 12-MAY-18 21:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 45.00 MG
Reported by: Buoy

A wind gust of 45 knots was reported at Thomas Point Lighthouse.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 12-MAY-18 21:06:00 to 12-MAY-18 21:18:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 34.00 MG
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 12-MAY-18 21:06:00 to 12-MAY-18 21:16:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts up to 34 knots were reported at Monroe Creek.