A band of showers and thunderstorms well ahead of Tropical Cyclone Isaias produce gusty winds over the tidal Potomac River and portions of the Chesapeake Bay.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-AUG-20 13:41:00 to 03-AUG-20 13:41:00 (EST-5)
Location: POINT LOOKOUT (PTL)
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 Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-AUG-20 13:54:00 to 03-AUG-20 13:54:00 (EST-5)
Location: PINEY POINT (PPTM2)
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gust of 36 knots (41 MPH) was measured by a buoy near Piney Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-AUG-20 14:09:00 to 03-AUG-20 14:24:00 (EST-5)
Location: COBB POINT (COB)
Magnitude: 48.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

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

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 14:23:00 to 03-AUG-20 14:23:00 (EST-5)
Location: CUCKOLD CREEK (CCK)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 34 knots (39 MPH) wind gust was measured by a mesonet near Cobb Island.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 14:27:00 to 03-AUG-20 14:27:00 (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 Dahlgren (PYL).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 14:28:00 to 03-AUG-20 14:28:00 (EST-5)
Location: BABER POINT (BAB)
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 at a buoy near Dahlgren (T70).

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 14:32:00 to 03-AUG-20 14:32:00 (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 03-AUG-20 14:36:00 to 03-AUG-20 14:36:00 (EST-5)
Location: POTOMAC LIGHT 33 (LT3)
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gust of 38 knots (44 MPH) was measured by a buoy near Potomac Light.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 15:19:00 to 03-AUG-20 15:34:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Wind gusts of 34 to 38 knots (39 to 44 MPH) were measured by a buoy in Occoquan Bay.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-AUG-20 15:19:00 to 03-AUG-20 15:24:00 (EST-5)
Location: TOLLY POINT (TOL)
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 Tolly Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-AUG-20 15:28:00 to 03-AUG-20 15:28:00 (EST-5)
Location: GREENBURY POINT (GBY)
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 Greenbury Point.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-AUG-20 15:34:00 to 03-AUG-20 15:34:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 34.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A thunderstorm produced an estimated wind gust to 34 knots (39 MPH) near the ASOS at Ronald Reagan Washington National Airport (KDCA).

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 03-AUG-20 15:36:00 to 03-AUG-20 15:36:00 (EST-5)
Location: WASHINGTON DC (WASD2)
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 Washington Channel.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 03-AUG-20 15:15:00 to 03-AUG-20 15:15:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

A wind gusts of 34 knots (39 MPH) was measured by a buoy near Thomas Point.

Marine Thunderstorm Wind in TIDAL POTOMAC COBB IS MD TO SMITH PT VA, ATLANTIC NORTH
From 03-AUG-20 22:41:00 to 03-AUG-20 22:41:00 (EST-5)
Location: POINT LOOKOUT (PTL)
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 Point Lookout.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 03-AUG-20 14:31:00 to 03-AUG-20 14:31:00 (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.