A cold front passed through the waters on the 29th, triggering showers and thunderstorms. Warm and humid conditions ahead of the front led to moderate amounts of instability. Some thunderstorms produced gusty winds due to the instability along with strong winds aloft.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 29-JUL-10 12:59:00 to 29-JUL-10 12:59:00 (EST-5)
Location: US NAVAL ACADEMY
Magnitude: 37.00 MG
Reported by: ASOS

A wind gust of 37 knots was measured at Annapolis.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 29-JUL-10 12:58:00 to 29-JUL-10 12:58:00 (EST-5)
Location: ANNAPOLIS
Magnitude: 39.00 MG
Reported by: Mesonet

A wind gust of 39 knots was measured near Eastport.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 29-JUL-10 13:35:00 to 29-JUL-10 13:35:00 (EST-5)
Location: CHESAPEAKE BEACH
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust of 34 knots was measured at Chesapeake Beach.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 29-JUL-10 12:36:00 to 29-JUL-10 12:42:00 (EST-5)
Location: BALTIMORE CITY
Magnitude: 38.00 MG
Reported by: Mesonet

Wind gusts between 34 and 38 knots were measured near Fells Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 29-JUL-10 12:50:00 to 29-JUL-10 13:10:00 (EST-5)
Location: PATAPSCO BUOY
Magnitude: 40.00 MG
Reported by: Buoy

Wind gusts up to 40 knots were reported at the Patapsco Buoy.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 29-JUL-10 13:12:00 to 29-JUL-10 13:12:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was reported at Tolchester Beach.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 29-JUL-10 12:59:00 to 29-JUL-10 12:59:00 (EST-5)
Location: ANNAPOLIS
Magnitude: 37.00 EG
Reported by: Mesonet

A wind gust was estimated around 37 knots near Annapolis.

Marine Thunderstorm Wind in CHESAPEAKE BAY SANDY PT TO N BEACH MD, ATLANTIC NORTH
From 29-JUL-10 13:06:00 to 29-JUL-10 13:10:00 (EST-5)
Location: GREENBERRY POINT
Magnitude: 39.00 MG
Reported by: Mesonet

A wind gust of 39 knots was measured at Greenbury Point.

Marine Thunderstorm Wind in EASTERN BAY, ATLANTIC NORTH
From 29-JUL-10 13:13:00 to 29-JUL-10 13:13:00 (EST-5)
Location: KENT ISLAND
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Kent Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY POOLES IS TO SANDY PT MD, ATLANTIC NORTH
From 29-JUL-10 13:12:00 to 29-JUL-10 13:12:00 (EST-5)
Location: BALTIMORE APPROACHES BUOY
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Tolchester Beach.

Marine Thunderstorm Wind in PATAPSCO RIVER INCLUDING BALTIMORE HARBOR, ATLANTIC NORTH
From 29-JUL-10 12:24:00 to 29-JUL-10 12:24:00 (EST-5)
Location: RIVIERA BEACH
Magnitude: 34.00 MG
Reported by: Buoy

A wind gust of 34 knots was reported at Key Bridge.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 29-JUL-10 14:42:00 to 29-JUL-10 14:42:00 (EST-5)
Location: COVE POINT
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was measured at Cove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 29-JUL-10 15:12:00 to 29-JUL-10 15:12:00 (EST-5)
Location: LOWER HOOPERS ISLAND
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured at Hooper Island.

Marine Thunderstorm Wind in CHESAPEAKE BAY DRUM PT TO SMITH PT VA, ATLANTIC NORTH
From 29-JUL-10 17:52:00 to 29-JUL-10 17:52:00 (EST-5)
Location: POINT LOOKOUT
Magnitude: 34.00 EG
Reported by: Mesonet

A wind gust in excess of 30 knots was measured near Dameron.