A cold front stalled across the Mid Atlantic and low pressure formed and moved along it. Southerly flow advected gulf moisture into the region and showers and thunderstorms easily formed. Heavy rain, hail, damaging winds and tornadoes occurred throughout the day.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 13-JUN-13 08:10:00 to 13-JUN-13 08:10:00 (EST-5)
Location: SUSQUEHANNA
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 31 knots were measured at the Susquehanna buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 15:49:00 to 13-JUN-13 15:54:00 (EST-5)
Location: STEVENSVILLE
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 40 knots were measured at Bayside Elementary School.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 15:48:00 to 13-JUN-13 15:48:00 (EST-5)
Location: KENT ISLAND
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 35 knots were measured at Kent Island(KNT).

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 15:50:00 to 13-JUN-13 15:50:00 (EST-5)
Location: PATAPSCO BUOY
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 31 knots were measured at Patapsco Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 13-JUN-13 15:59:00 to 13-JUN-13 15:59:00 (EST-5)
Location: SUSQUEHANNA
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 39 knots were measured at North Bay North East.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 01:38:00 to 13-JUN-13 01:43:00 (EST-5)
Location: CRISFIELD
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 39 knots were measured at Crisfield(CRS).

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 08:26:00 to 13-JUN-13 08:30:00 (EST-5)
Location: MILLER ISLAND
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 39 knots were measured at Hartmiller Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 08:30:00 to 13-JUN-13 08:30:00 (EST-5)
Location: PATAPSCO BUOY
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 39 knots were measured at Patapsco Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 08:36:00 to 13-JUN-13 08:42:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 39 knots at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 08:38:00 to 13-JUN-13 08:38:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 37 knots were reported at Greenbury Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 08:40:00 to 13-JUN-13 08:40:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts in excess of 33 knots were measured at Annapolis Buoy.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 13-JUN-13 08:42:00 to 13-JUN-13 08:42:00 (EST-5)
Location: PATUXENT RIVER BUOY
Magnitude: 40.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 40 knots were measured at Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 08:42:00 to 13-JUN-13 08:42:00 (EST-5)
Location: THOMAS POINT LIGHT
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 36 knots were measured at Thomas Point Lighthouse.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 14:30:00 to 13-JUN-13 14:42:00 (EST-5)
Location: PINEY POINT
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 47 knots were measured at Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 14:48:00 to 13-JUN-13 15:12:00 (EST-5)
Location: LEWISETTA
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 38 knots were measured at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 14:48:00 to 13-JUN-13 15:12:00 (EST-5)
Location: LEWISETTA
Magnitude: 38.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 38 knots were measured at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 14:55:00 to 13-JUN-13 16:25:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 45.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 45 knots were measured at Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 15:00:00 to 13-JUN-13 16:20:00 (EST-5)
Location: POTOMAC BUOY
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 47 knots were measured at Potomac Point Lookout Buoy.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:06:00 to 13-JUN-13 15:30:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 52 knots were measured at Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:06:00 to 13-JUN-13 15:32:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 59 knots were measured at Bishops Head (BHD).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:15:00 to 13-JUN-13 16:27:00 (EST-5)
Location: SMITH ISLAND
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 37 knots were measured at Smith Island (SIS).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:23:00 to 13-JUN-13 15:38:00 (EST-5)
Location: RACCOON POINT
Magnitude: 45.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 45 knots were measured at Raccoon Point (RAC).

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:23:00 to 13-JUN-13 16:28:00 (EST-5)
Location: CRISFIELD
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 42 knots were measured at Crisfield (CRS).

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 13-JUN-13 15:20:00 to 13-JUN-13 15:30:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 47 knots were measured at Gooses Reef Buoy.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 13-JUN-13 14:09:00 to 13-JUN-13 14:09:00 (EST-5)
Location: QUANTICO
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Wind gusts of 33 knots were measured at Quantico.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 13-JUN-13 14:15:00 to 13-JUN-13 14:20:00 (EST-5)
Location: MONROE CREEK
Magnitude: 44.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 44 knots were measured at Monroe Creek.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 13-JUN-13 14:54:00 to 13-JUN-13 15:00:00 (EST-5)
Location: COVE POINT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 50 knots were measured at Cove Point.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 13-JUN-13 15:24:00 to 13-JUN-13 16:23:00 (EST-5)
Location: CRISFIELD
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 40 knots were measured at Crisfield.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 15:42:00 to 13-JUN-13 15:42:00 (EST-5)
Location: LEWISETTA
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts in excess of 33 knots were reported at Lewisetta.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 13-JUN-13 15:04:00 to 13-JUN-13 15:04:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts in excess of 33 knots were measured at Reagan National.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 15:38:00 to 13-JUN-13 15:48:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 59 knots were measured at Greenbury Point (GBY).

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 13-JUN-13 15:40:00 to 13-JUN-13 15:40:00 (EST-5)
Location: PINEY POINT
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 40 knots were measured at Annapolis Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 13-JUN-13 15:42:00 to 13-JUN-13 15:47:00 (EST-5)
Location: TOLLY POINT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 50 knots were measured at Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 15:48:00 to 13-JUN-13 15:54:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 50 knots were measured at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 13-JUN-13 16:01:00 to 13-JUN-13 16:01:00 (EST-5)
Location: SANDY POINT
Magnitude: 48.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wind gusts of 48 knots were measured at Stevenville.