Strong to severe thunderstorms coalesced into a bow echo/squall line which moved eastward across the tidal Potomac River and Maryland portion of the Chesapeake Bay during the mid afternoon hours of Wednesday, July 22nd, 2020.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 14:52:00 to 22-JUL-20 14:57:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 38 to 42 knots (44 to 48 MPH) were measured by a buoy near Dahlgren (PYL).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 14:53:00 to 22-JUL-20 14:58:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 36.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 36 knots (39 to 44 MPH) were measured by a buoy near Dahlgren (T70).

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-20 14:54:00 to 22-JUL-20 14:54:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 41 knots (47 MPH) was measured by a mesonet near the upper tidal Potomac River in Arlington (ARLNN).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 14:40:00 to 22-JUL-20 14:55:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 37 knots (39 to 43 MPH) were measured by a buoy in Occoquan Bay.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 14:44:00 to 22-JUL-20 15:12:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 46.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts of 34 to 46 knots (39 to 53 MPH) were measured by the military ASOS at Quantico (KNYG).

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-20 14:45:00 to 22-JUL-20 14:54:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts of 38 to 50 knots were measured by the ASOS at Ronald Reagan Washington National Airport (KDCA).

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-20 14:54:00 to 22-JUL-20 15:06:00 (EST-5)
Location: WASHINGTON DC (WASD2)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 43 knots (39 to 49 MPH) were measured by a buoy in Washington Channel.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 22-JUL-20 15:00:00 to 22-JUL-20 15:00:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 43 knots (49 MPH) was measured by a mesonet at Nationals Park.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 14:57:00 to 22-JUL-20 14:57:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gust of 34 knots (39 MPH) was measured by a buoy near Potomac Light.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 15:12:00 to 22-JUL-20 15:12:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Cuckold Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 15:27:00 to 22-JUL-20 15:52:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 35 to 43 knots (40 to 49 MPH) were measured by a buoy near Potomac Light.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 15:36:00 to 22-JUL-20 15:36:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Baber Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 15:37:00 to 22-JUL-20 15:52:00 (EST-5)
Location: BABER POINT (BAB)
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 37 knots (39 to 43 MPH) were measured by a buoy near Dahlgren (PYL).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 15:49:00 to 22-JUL-20 16:00:00 (EST-5)
Location: MONROE CREEK (MON)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 39 knots (39 to 45 MPH) were measured by a buoy near Monroe Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 15:49:00 to 22-JUL-20 16:34:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 42 knots (39 to 48 MPH) were measured at a buoy near Cobb Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 16:24:00 to 22-JUL-20 16:42:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 39 knots (39 to 45 MPH) were measured by a buoy near Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 16:42:00 to 22-JUL-20 16:42:00 (EST-5)
Location: LEWISETTA MD (LWTV2)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Lewisetta.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:43:00 to 22-JUL-20 15:58:00 (EST-5)
Location: GREENBURY POINT (GBY)
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 35 to 40 knots (40 to 46 MPH) were measured at a buoy near Greenbury Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:43:00 to 22-JUL-20 16:03:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 41 knots (39 to 47 MPH) were measured by a buoy near Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:43:00 to 22-JUL-20 15:43:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A wind gust of 36 knots (41 MPH) was measured by the ASOS at the Annapolis Naval Academy (KNAK).

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:46:00 to 22-JUL-20 15:46:00 (EST-5)
Location: HERRING BAY (HRB)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy in Herring Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:51:00 to 22-JUL-20 15:56:00 (EST-5)
Location: SANDY POINT (SPT)
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 36 knots (39 to 41 MPH) were measured by a buoy near Sandy Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 22-JUL-20 15:53:00 to 22-JUL-20 16:18:00 (EST-5)
Location: GUNPOWDER (GUN)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 42 knots (39 to 48 MPH) were measured by a buoy near the mouth of the Gunpowder River.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 22-JUL-20 16:00:00 to 22-JUL-20 16:06:00 (EST-5)
Location: BALTIMORE (BLTM2)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 knots (39 MPH) were measured by a buoy in Baltimore Harbor/the tidal Patapsco River.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:51:00 to 22-JUL-20 16:05:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 42.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 37 to 42 knots (43 to 48 MPH) were measured by a buoy near Thomas Point.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 22-JUL-20 16:00:00 to 22-JUL-20 16:06:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 47 knots (39 to 54 MPH) were measured at Francis Scott Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 22-JUL-20 16:16:00 to 22-JUL-20 16:26:00 (EST-5)
Location: HART MILLER ISLAND (HRT)
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 39 to 47 knots (45 to 54 MPH) were measured by a buoy near Hart Miller Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 22-JUL-20 16:24:00 to 22-JUL-20 16:42:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 48.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 48 knots (39 to 55 MPH) were measured by a buoy near Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 15:43:00 to 22-JUL-20 15:43:00 (EST-5)
Location: ST MARYS ES (ANNAS)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near Saint Mary's Elementary School.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 22-JUL-20 16:00:00 to 22-JUL-20 16:00:00 (EST-5)
Location: ORIOLE PARK AT CAMDEN YARDS (BLTPC)
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 35 knots (40 MPH) was measured by a mesonet at Orioles Park at Camden Yards.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 22-JUL-20 16:30:00 to 22-JUL-20 16:30:00 (EST-5)
Location: (KW29)BAY BRIDGE AIRPORT
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gust of 35 knots (40 MPH) was measured by a mesonet near Stevensville.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 22-JUL-20 16:08:00 to 22-JUL-20 16:08:00 (EST-5)
Location: CHESAPEAKE BIOLOGICAL LABORATORY (CBIM2)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind gust of 50 knots (58 MPH) was measured by a mesonet near MD-2 Governor Thomas Johnson Bridge.

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 22-JUL-20 16:09:00 to 22-JUL-20 16:14:00 (EST-5)
Location: BLACKWALNUT HARBOR (BWH)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced estimated wind gusts to 34 knots (39 MPH) near a buoy in Blackwalnut Harbor.

Marine Thunderstorm Wind in PATUXENT RIVER TO BROOMES ISLAND MD, ATLANTIC NORTH
From 22-JUL-20 16:12:00 to 22-JUL-20 16:12:00 (EST-5)
Location: SOLOMONS ISLAND (SLIM2)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gust of 34 knots (39 MPH) was measured by a buoy near Solomons Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 16:14:00 to 22-JUL-20 16:15:00 (EST-5)
Location: PATUXENT RIVER ASOS (KNHK)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts of 42 to 43 knots (48 to 49 MPH) were measured by the military ASOS at Patuxent River Naval Air Station (KNHK).

Marine Thunderstorm Wind in CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER, ATLANTIC NORTH
From 22-JUL-20 16:18:00 to 22-JUL-20 16:30:00 (EST-5)
Location: CAMBRIDGE (CAMM2)
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 35 knots (39 to 40 MPH) were measured by a buoy near Cambridge.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 22-JUL-20 16:48:00 to 22-JUL-20 16:48:00 (EST-5)
Location: BISHOPS HEAD (BISM2)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Bishops Head Pier.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 22-JUL-20 16:23:00 to 22-JUL-20 16:38:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 39 knot (39 to 45 MPH) were measured by a buoy near Grove Point.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 22-JUL-20 16:02:00 to 22-JUL-20 16:07:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 35 knots (39 to 40 MPH) were measured by a buoy near Cuckold Creek.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 17:34:00 to 22-JUL-20 17:34:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Cobb Island.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 22-JUL-20 18:06:00 to 22-JUL-20 18:06:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near a buoy near Piney Point.