An upper level trough east of the Mississippi River on the morning of April 26th deepened and closed off over the eastern Great Lakes by the morning of April 27th. A forced convective line was ongoing in the morning hours of April 26th over West Virginia and progressed eastward across the waters during the afternoon hours. A few individual cells also formed ahead of this convective line. Modest instability developed during the late morning and early afternoon hours which combined with moderate levels of wind shear to  help support showers and thunderstorms which produced strong gusty winds over the waters.

Marine Hail in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 26-APR-19 14:25:00 to 26-APR-19 14:25:00 (EST-5)
Location: CREEK ROAD (CRKM2)
Magnitude: 0.75 
Reported by: Trained Spotter

Hail of 0.75 inch in diameter was observed in Pasadena, Maryland.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 10:53:00 to 26-APR-19 10:53:00 (EST-5)
Location: LOWER HOOPERS ISLAND (HPR)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Lower Hoopers Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 26-APR-19 14:54:00 to 26-APR-19 14:54:00 (EST-5)
Location: (KMTN)MARTIN STATE AIRPORT
Magnitude: 39.00 MG
Reported by: AWOS

Wind gusts of up to 39 knots were measured at Martin State Airport (KMTN).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 26-APR-19 14:49:00 to 26-APR-19 14:49:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 35.00 MG
Reported by: ASOS

Wind gusts of up to 35 knots were measured at Annapolis (KNAK).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 26-APR-19 14:54:00 to 26-APR-19 14:54:00 (EST-5)
Location: GREENBERRY POINT (GBY)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts of up to 37 knots were measured near Greenbury Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 26-APR-19 15:00:00 to 26-APR-19 15:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts of up to 43 knots were measured near Thomas Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 14:05:00 to 26-APR-19 14:05:00 (EST-5)
Location: CRISFIELD FIRE DEPARTMENT (CRSFL)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts of up to 34 knots were observed near the Crisfield Fire Department.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 26-APR-19 15:04:00 to 26-APR-19 15:04:00 (EST-5)
Location: BAYSIDE ES (STVVL)
Magnitude: 42.00 MG
Reported by: Mesonet

Wind gusts of up to 42 knots were measured near Bayside Elementary School.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 14:24:00 to 26-APR-19 14:30:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 14:28:00 to 26-APR-19 15:23:00 (EST-5)
Location: LOWER HOOPERS ISLAND (HPR)
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts of up to 36 knots were measured near Lower Hoopers Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 14:33:00 to 26-APR-19 14:43:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 46.00 MG
Reported by: Buoy

Wind gusts of up to 46 knots were measured near Cobb Point.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 26-APR-19 14:39:00 to 26-APR-19 15:01:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 54.00 MG
Reported by: ASOS

Wind gusts of up to 54 knots were measured at Patuxent River NAS (KNHK).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 15:00:00 to 26-APR-19 15:00:00 (EST-5)
Location: ST INIGOES (KNUI)
Magnitude: 34.00 EG
Reported by: AWOS

Wind gusts of up to 34 knots were observed at St. Inigoes (KNUI).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 15:06:00 to 26-APR-19 15:06:00 (EST-5)
Location: LEWISETTA (LWS)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of up to 35 knots were measured at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 15:18:00 to 26-APR-19 15:23:00 (EST-5)
Location: POINT LOOKOUT (PTL)
Magnitude: 41.00 MG
Reported by: Buoy

Wind gusts of up to 41 knots were measured near Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 15:06:00 to 26-APR-19 15:06:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of up to 35 knots were measured near Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:16:00 to 26-APR-19 14:16:00 (EST-5)
Location: BABAR POINT (BAB)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of up to 42 knots were measured near Babar Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:19:00 to 26-APR-19 14:19:00 (EST-5)
Location: POTOMAC RIVER BUOY (44067)
Magnitude: 46.00 MG
Reported by: Buoy

Wind gusts of up to 46 knots were measured near Pylons.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:21:00 to 26-APR-19 14:26:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts of up to 37 knots were measured near Monroe Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:22:00 to 26-APR-19 14:27:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 43.00 MG
Reported by: Buoy

Wind gusts of up to 43 knots were measured near Cuckold Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:19:00 to 26-APR-19 14:19:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 48.00 MG
Reported by: Buoy

Wind gusts of up to 48 knots were measured near Potomac Light 33.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 14:21:00 to 26-APR-19 14:21:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 38.00 MG
Reported by: Buoy

Wind gusts of up to 38 knots were measured south of Swan Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 26-APR-19 14:18:00 to 26-APR-19 15:12:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts of up to 36 knots were measured near Cove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 26-APR-19 14:59:00 to 26-APR-19 15:09:00 (EST-5)
Location: GOOSES REEF BUOY (44062)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of up to 42 knots were measured near Blackwalnut Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 26-APR-19 14:33:00 to 26-APR-19 14:33:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 46.00 MG
Reported by: Buoy

Wind gusts of up to 46 knots were measured southeast of Cobb Island.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 26-APR-19 15:00:00 to 26-APR-19 15:00:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts of up to 36 knots were measured near Solomons Island.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 26-APR-19 15:05:00 to 26-APR-19 15:05:00 (EST-5)
Location: CAMBRIDGE (CAMM2)
Magnitude: 34.00 EG
Reported by: AWOS

Wind gusts of up to 34 knots were observed at Cambridge-Dorchester Regional Airport (KCGE).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 15:36:00 to 26-APR-19 15:36:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 15:47:00 to 26-APR-19 16:07:00 (EST-5)
Location: CRISFIELD CG (CRS)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of up to 42 knots were measured near Crisfield.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 16:05:00 to 26-APR-19 16:05:00 (EST-5)
Location: CRISFIELD FIRE DEPARTMENT (CRSFL)
Magnitude: 50.00 MG
Reported by: Buoy

Wind gusts of up to 50 knots were measured at the Crisfield Fire Department.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 26-APR-19 16:09:00 to 26-APR-19 16:09:00 (EST-5)
Location: RACCOON POINT (RAC)
Magnitude: 65.00 MG
Reported by: Buoy

Wind gusts of up to 65 knots were measured near Raccoon Point.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 26-APR-19 13:40:00 to 26-APR-19 13:40:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 MG
Reported by: ASOS

Wind gusts of up to 34 knots were measured at Washington Reagan National Airport (KDCA).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 13:56:00 to 26-APR-19 14:01:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 40.00 MG
Reported by: Mesonet

Wind gusts of up to 40 knots were measured at Occoquan.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 26-APR-19 13:48:00 to 26-APR-19 14:00:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 53.00 MG
Reported by: ASOS

Wind gusts of up to 53 knots were measured at Quantico (KNYG).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 26-APR-19 14:55:00 to 26-APR-19 15:00:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 34.00 MG
Reported by: Buoy

Wind gusts of up to 34 knots were measured near Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 26-APR-19 15:04:00 to 26-APR-19 15:04:00 (EST-5)
Location: GUNPOWDER (GUN)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Gunpowder.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 26-APR-19 15:06:00 to 26-APR-19 15:12:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Tolchester.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 26-APR-19 15:24:00 to 26-APR-19 15:24:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 34.00 EG
Reported by: Buoy

Wind gusts of up to 34 knots were observed near Grove Point.