Thunderstorms initiated along a pressure trough in the lee of the Appalachian Mountains during the mid to late afternoon, and persisted into the evening. Some thunderstorms produced gusty winds over the waters.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 04-JUN-20 19:02:00 to 04-JUN-20 19:10:00 (EST-5)
Location: (DCA)REAGAN NATIONAL AIRPORT
Magnitude: 43.00 MG
Reported by: ASOS

Wind gusts between 39 and 43 knots were reported.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 04-JUN-20 19:05:00 to 04-JUN-20 19:20:00 (EST-5)
Location: NATIONALS PARK (WSHNP)
Magnitude: 36.00 MG
Reported by: Mesonet

Wind gusts between 34 and 36 knots were reported.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 04-JUN-20 19:10:00 to 04-JUN-20 19:25:00 (EST-5)
Location: GEORGE MASON ES (ALXD2)
Magnitude: 34.00 MG
Reported by: Mesonet

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 04-JUN-20 19:50:00 to 04-JUN-20 19:51:00 (EST-5)
Location: QUANTICO (KNYG)
Magnitude: 42.00 MG
Reported by: AWOS

Wind gusts of 34 to 42 knots were reported.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 04-JUN-20 19:54:00 to 04-JUN-20 20:06:00 (EST-5)
Location: BALTIMORE KEY BRIDGE (FSKM2)
Magnitude: 36.00 MG
Reported by: Buoy

Wind gusts up to 36 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 04-JUN-20 19:57:00 to 04-JUN-20 20:22:00 (EST-5)
Location: GUNPOWDER (GUN)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts up to 37 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:00:00 to 04-JUN-20 21:00:00 (EST-5)
Location: THOMAS POINT (TPLM2)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of 39 to 42 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:01:00 to 04-JUN-20 20:01:00 (EST-5)
Location: ANNAPOLIS (KNAK)
Magnitude: 34.00 EG
Reported by: ASOS

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:04:00 to 04-JUN-20 20:14:00 (EST-5)
Location: TOLLY POINT (TOL)
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts up to 39 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:04:00 to 04-JUN-20 20:04:00 (EST-5)
Location: GREENBURY POINT (GBY)
Magnitude: 36.00 MG
Reported by: Buoy

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:08:00 to 04-JUN-20 20:08:00 (EST-5)
Location: KENT ISLAND (KNT)
Magnitude: 34.00 EG
Reported by: Mesonet

Wind gusts in excess of 30 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 04-JUN-20 20:09:00 to 04-JUN-20 20:19:00 (EST-5)
Location: HART MILLER ISLAND (HRT)
Magnitude: 39.00 MG
Reported by: Buoy

Wind gusts up to 39 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 04-JUN-20 20:10:00 to 04-JUN-20 20:15:00 (EST-5)
Location: ST MARYS ES (ANNAS)
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts up to 39 knots were reported at the Stevensville Marina.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 04-JUN-20 20:11:00 to 04-JUN-20 20:16:00 (EST-5)
Location: LEESYLVANIA STATE PARK (LSLVN)
Magnitude: 35.00 MG
Reported by: Buoy

Wind gusts of 34 to 35 knots were reported at Occoquon.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 04-JUN-20 20:18:00 to 04-JUN-20 20:30:00 (EST-5)
Location: TOLCHESTER MD (TCBM2)
Magnitude: 37.00 MG
Reported by: Buoy

Wind gusts up to 37 knots were reported.

Marine Thunderstorm Wind in CHESAPEAKE BAY N OF POOLES IS MD, ATLANTIC NORTH
From 04-JUN-20 20:41:00 to 04-JUN-20 20:46:00 (EST-5)
Location: GROVE POINT (GVP)
Magnitude: 42.00 MG
Reported by: Buoy

Wind gusts of 40 to 42 knots were reported.