sweetapricity/bridgedeck-noaa huggingface dataset:
A cold front combined with plenty of instability to cause showers and thunderstorms over the waters. There was enough instability for thunderstorms to produce gusty winds.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 08-JUL-12 16:15:00 to 08-JUL-12 16:15:00 (EST-5)
Location: QUANTICO
Magnitude: 42.00 MG
Reported by: ASOS

A wind gust of 42 knots was reported at Quantico.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 08-JUL-12 16:53:00 to 08-JUL-12 16:53:00 (EST-5)
Location: POTOMAC LIGHT
Magnitude: 36.00 MG
Reported by: Mesonet

A wind gust of 36 knots was reported at the Potomac Lighthouse.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 08-JUL-12 17:13:00 to 08-JUL-12 17:13:00 (EST-5)
Location: CHESAPEAKE BEACH
Magnitude: 50.00 EG
Reported by: Unknown

A wind gust of 50 knots was estimated based on thunderstorm wind damage nearby.

Marine Thunderstorm Wind in TIDAL POTOMAC INDIAN HD TO COBB IS MD, ATLANTIC NORTH
From 08-JUL-12 17:05:00 to 08-JUL-12 17:05:00 (EST-5)
Location: MONROE CREEK
Magnitude: 34.00 MG
Reported by: Mesonet

A wind gust of 34 knots was reported at Monroe Creek.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 08-JUL-12 18:11:00 to 08-JUL-12 18:11:00 (EST-5)
Location: BISHOPS HEAD
Magnitude: 54.00 MG
Reported by: Mesonet

A wind gust of 54 knots was reported at Bishops Head.

Marine Thunderstorm Wind in TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND, ATLANTIC NORTH
From 08-JUL-12 18:32:00 to 08-JUL-12 18:32:00 (EST-5)
Location: CRISFIELD
Magnitude: 36.00 MG
Reported by: Mesonet

A wind gust of 36 knots was reported at Crisfield.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 08-JUL-12 17:54:00 to 08-JUL-12 17:54:00 (EST-5)
Location: COVE POINT
Magnitude: 42.00 MG
Reported by: Buoy

A wind gust of 42 knots was reported at Cove Point.

Marine Thunderstorm Wind in CHESAPEAKE BAY N BEACH TO DRUM PT MD, ATLANTIC NORTH
From 08-JUL-12 17:40:00 to 08-JUL-12 17:50:00 (EST-5)
Location: MID BAY BUOY
Magnitude: 34.00 EG
Reported by: Buoy

A wind gust in excess of 30 knots was reported at Gooses Reef.

Marine Thunderstorm Wind in TIDAL POTOMAC KEY BRIDGE TO INDIAN HD MD, ATLANTIC NORTH
From 08-JUL-12 23:05:00 to 08-JUL-12 23:05:00 (EST-5)
Location: WASHINGTON NATIONALS PARK
Magnitude: 50.00 EG
Reported by: Unknown

A wind gust around 50 knots was estimated based on thunderstorm wind damage nearby.
Thunderstorms developed over North Central Montana lasting into the early hours of 26 June 2012.

Hail in TETON, MONTANA
From 26-JUN-12 08:20:00 to 26-JUN-12 08:40:00 (MST-7)
Location: FAIRFIELD
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail measuring 1.25 inches was reported 8 miles WSW of Fairfield.

Hail in GLACIER, MONTANA
From 26-JUN-12 11:16:00 to 26-JUN-12 12:15:00 (MST-7)
Location: BROWNING
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail measuring 1.75 inches was reported in Browning.

Hail in LIBERTY, MONTANA
From 26-JUN-12 06:45:00 to 26-JUN-12 07:15:00 (MST-7)
Location: JOPLIN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail measuring 1.75 inches was reported 20 miles NE of Joplin.

Hail in PONDERA, MONTANA
From 26-JUN-12 06:15:00 to 26-JUN-12 06:30:00 (MST-7)
Location: LEDGER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail, measuring 1.00 inches, was reported 7 miles ESE of Ledger.

Hail in HILL, MONTANA
From 26-JUN-12 06:30:00 to 26-JUN-12 06:40:00 (MST-7)
Location: KREMLIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail, measuring 1.00 inches, was reported 20 miles N of Kremlin.

Hail in LIBERTY, MONTANA
From 26-JUN-12 06:20:00 to 26-JUN-12 06:40:00 (MST-7)
Location: CHESTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter size hail, measuring 1.00 inches, was reported at Chester.

Hail in HILL, MONTANA
From 26-JUN-12 05:10:00 to 26-JUN-12 05:20:00 (MST-7)
Location: INVERNESS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail, measuring 1.00 inches, was reported 16 miles S of Inverness.

Hail in BLAINE, MONTANA
From 26-JUN-12 01:30:00 to 26-JUN-12 01:45:00 (MST-7)
Location: HARLEM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter sized hail, measuring 1.00 inches, was reported 6 miles WSW of Harlem.

Hail in BLAINE, MONTANA
From 26-JUN-12 00:50:00 to 26-JUN-12 01:10:00 (MST-7)
Location: CHINOOK
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tennis ball sized hail, measuring 2.5 inches, was reported 10 miles S of Chinook. Damage to vehicle windshields was also reported.

Thunderstorm Wind in LIBERTY, MONTANA
From 26-JUN-12 06:45:00 to 26-JUN-12 07:15:00 (MST-7)
Location: JOPLIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm outflow winds caused damage in Joplin including blown-off roofs, trees blown down, and power poles blown down.
A weak upper level low pressure area moved across Central Florida producing scattered afternoon thunderstorms across Lake Okeechobee during the late afternoon.

Marine Thunderstorm Wind in LAKE OKEECHOBEE, ATLANTIC SOUTH
From 24-JUL-12 16:15:00 to 24-JUL-12 16:15:00 (EST-5)
Location: PORT MAYACA
Magnitude: 34.00 MG
Reported by: Mesonet

A strong thunderstorm produced a wind gust of 34 knots...39 mph...at the L005 Mesonet tower on Lake Okeechobee.
South of a nearly stationary front in the Ohio Valley, predawn showers and thunderstorms weakened as they headed toward northeastern Kentucky.  An outflow boundary from that convection helped trigger a new cluster of showers and thunderstorms in southeast Kentucky during the morning.  These moved southeast into Virginia.
The same pattern produced another round of showers and thunderstorms later that evening.

Thunderstorm Wind in BUCHANAN, VIRGINIA
From 01-JUL-12 09:12:00 to 01-JUL-12 09:12:00 (EST-5)
Location: GRUNDY
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down onto power lines.

Hail in DICKENSON, VIRGINIA
From 01-JUL-12 21:45:00 to 01-JUL-12 21:45:00 (EST-5)
Location: GEORGES FORK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer
A warm front pushed north across the region and eventually stalled across northern sections of the Mid-South by the late afternoon on June 3, 2012.  An upper level disturbance moving through triggered numerous showers and thunderstorms along the warm front and eventually formed a mesoscale convective system that pushed through during the evening hours of June 3, 2012.  There were reports of damaging winds and large hail.  After midnight additional showers and thunderstorms redeveloped along the stalled front producing a few more reports of damaging winds during the early morning hours of June 4, 2012.

Thunderstorm Wind in CRAIGHEAD, ARKANSAS
From 03-JUN-12 19:06:00 to 03-JUN-12 19:11:00 (CST-6)
Location: HERNDON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Damaging straight line winds knocked down trees across County Road 766 at Highway 141.

Thunderstorm Wind in CRAIGHEAD, ARKANSAS
From 03-JUN-12 19:10:00 to 03-JUN-12 19:15:00 (CST-6)
Location: DRYDEN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Straight line winds knocked over a grain cart in the middle of the intersection of County Road 160 and County Road 155.

Thunderstorm Wind in POINSETT, ARKANSAS
From 04-JUN-12 01:40:00 to 04-JUN-12 01:45:00 (CST-6)
Location: TRUMANN
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Straight line winds knocked down power lines in Trumann.

Thunderstorm Wind in RANDOLPH, ARKANSAS
From 03-JUN-12 18:00:00 to 03-JUN-12 18:05:00 (CST-6)
Location: POCAHONTAS
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

Damaging straight line winds knocked down a power line at Highway 162 and Highway 62.

Hail in LAWRENCE, ARKANSAS
From 03-JUN-12 18:12:00 to 03-JUN-12 18:17:00 (CST-6)
Location: SMITHVILLE
Magnitude: 4.50 
Crop damage: 0.00K
Reported by: Fire Department/Rescue
An upper level ridge was over the region with a dryline present across the Permian Basin. Good surface heating and low-level moisture provided instability and lift across the area.  This lift was especially prevalent across the Davis Mountains due to the elevated heat source.

Hail in PECOS, TEXAS
From 14-JUN-12 16:57:00 to 14-JUN-12 17:02:00 (CST-6)
Location: BELDING
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in PECOS, TEXAS
From 14-JUN-12 17:13:00 to 14-JUN-12 17:18:00 (CST-6)
Location: FT STOCKTON
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in PECOS, TEXAS
From 14-JUN-12 17:50:00 to 14-JUN-12 17:55:00 (CST-6)
Location: FT STOCKTON
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in ANDREWS, TEXAS
From 14-JUN-12 19:13:00 to 14-JUN-12 19:18:00 (CST-6)
Location: ANDREWS
Magnitude: 1.25 
Reported by: Trained Spotter

Flash Flood in PECOS, TEXAS
From 14-JUN-12 17:31:00 to 14-JUN-12 18:30:00 (CST-6)
Location: FT STOCKTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A thunderstorm with heavy rain moved over Pecos County and produced flash flooding one mile south of Fort Stockton.  There were multiple residential streets barricaded.  The cost of damage is estimated to be zero since no damage was reported.

Thunderstorm Wind in ECTOR, TEXAS
From 14-JUN-12 19:03:00 to 14-JUN-12 19:04:00 (CST-6)
Location: ODESSA
Magnitude: 65.00 EG
Property damage: 201.00K
Reported by: Public

A thunderstorm moved over Ector County and produced severe winds in Odessa.  A tree was reported to be uprooted, and two semi trucks were blown over on I-20.  Also, a fence was blown over, and the power got knocked out to a motel for over six hours.  The cost of damage is a very rough estimate.
An upper level short wave trough brought a few severe thunderstorms which produced quarter size hail along with a few tornado touchdowns.

Hail in BROWN, SOUTH DAKOTA
From 01-JUN-12 16:00:00 to 01-JUN-12 16:00:00 (CST-6)
Location: WESTPORT
Magnitude: 1.00 
Reported by: Public

Hail in BROWN, SOUTH DAKOTA
From 01-JUN-12 16:50:00 to 01-JUN-12 16:50:00 (CST-6)
Location: BATH
Magnitude: 1.00 
Reported by: NWS Employee

Hail in BROWN, SOUTH DAKOTA
From 01-JUN-12 17:15:00 to 01-JUN-12 17:15:00 (CST-6)
Location: FERNEY
Magnitude: 1.00 
Reported by: Public

Hail in MARSHALL, SOUTH DAKOTA
From 01-JUN-12 17:25:00 to 01-JUN-12 17:25:00 (CST-6)
Location: BRITTON
Magnitude: 1.00 
Reported by: CoCoRaHS

Hail in MARSHALL, SOUTH DAKOTA
From 01-JUN-12 17:30:00 to 01-JUN-12 17:30:00 (CST-6)
Location: AMHERST
Magnitude: 1.00 
Reported by: Public

Hail in MARSHALL, SOUTH DAKOTA
From 01-JUN-12 18:05:00 to 01-JUN-12 18:05:00 (CST-6)
Location: LANGFORD
Magnitude: 1.00 
Reported by: Public

Hail in CLARK, SOUTH DAKOTA
From 01-JUN-12 19:02:00 to 01-JUN-12 19:02:00 (CST-6)
Location: CLARK
Magnitude: 1.00 
Reported by: Emergency Manager

Tornado in BROWN, SOUTH DAKOTA
From 01-JUN-12 16:27:00 to 01-JUN-12 16:29:00 (CST-6)
Location: COLUMBIA
Tornado F-scale: EF0
Reported by: Trained Spotter

A tornado touched down briefly north of Columbia with no damage reported.

Tornado in CLARK, SOUTH DAKOTA
From 01-JUN-12 19:48:00 to 01-JUN-12 19:50:00 (CST-6)
Location: WILLOW LAKE
Tornado F-scale: EF0
Reported by: Trained Spotter

A tornado touched down briefly north of Willow Lake with no damage reported.

Tornado in CLARK, SOUTH DAKOTA
From 01-JUN-12 20:14:00 to 01-JUN-12 20:16:00 (CST-6)
Location: WILLOW LAKE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornado touched down briefly south of Willow Lake with no damage occuring.

Tornado in CLARK, SOUTH DAKOTA
From 01-JUN-12 18:59:00 to 01-JUN-12 19:04:00 (CST-6)
Location: RAYMOND
Tornado F-scale: EF0
Reported by: Trained Spotter

A tornado touched down east of Raymond and traveled over two miles before lifting. No damage was reported.
A severe cluster of storms developed across central Brevard County due to numerous boundary and storm interactions following development of the east and west coast sea breezes. Strong to severe winds occurred as the storms moved across the coast and offshore into the Atlantic.

Marine Thunderstorm Wind in VOLUSIA-BREVARD COUNTY LINE TO SEBASTIAN INLET 0-20NM, ATLANTIC SOUTH
From 16-AUG-12 14:50:00 to 16-AUG-12 14:50:00 (EST-5)
Location: MERRITT ISLAND
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

U.S. Air Force Wind Tower 1000 at the Kennedy Space Center recorded a 67 kt/77 mph wind gust as a severe thunderstorm moved across the barrier island and continued offshore.

Marine Thunderstorm Wind in VOLUSIA-BREVARD COUNTY LINE TO SEBASTIAN INLET 0-20NM, ATLANTIC SOUTH
From 16-AUG-12 15:15:00 to 16-AUG-12 15:15:00 (EST-5)
Location: MERRITT ISLAND
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

U.S. Air Force Wind Tower 9404 at the Kennedy Space Center measured a 37 kt/43 mph wind gust as a thunderstorm pushed across the intracoastal waters and exited offshore.
A shortwave trough and associated strong jet max approached the forecast area on the afternoon of June 8th. Several line segments formed as the flow veered with time and freezing levels dropped. Large hail events occurred with these storms in the afternoon, which transitioned into bowing lines across western Maine.

Hail in OXFORD, MAINE
From 08-JUN-12 14:10:00 to 08-JUN-12 14:14:00 (EST-5)
Location: EAST ANDOVER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced very strong winds and 1 inch hail in East Andover.

Hail in CUMBERLAND, MAINE
From 08-JUN-12 15:40:00 to 08-JUN-12 15:44:00 (EST-5)
Location: STANDISH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm produced 1 inch hail near Standish.

Hail in CUMBERLAND, MAINE
From 08-JUN-12 16:05:00 to 08-JUN-12 16:09:00 (EST-5)
Location: GORHAM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 0.88 inch hail in Gorham.

Hail in CUMBERLAND, MAINE
From 08-JUN-12 16:20:00 to 08-JUN-12 16:25:00 (EST-5)
Location: CAPE ELIZABETH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 0.88 inch hail in Cape Elizabeth.

Thunderstorm Wind in KENNEBEC, MAINE
From 08-JUN-12 15:35:00 to 08-JUN-12 15:39:00 (EST-5)
Location: WAYNE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm downed trees on wires near Wayne resulting in the loss of power to over 600 homes.

Hail in CUMBERLAND, MAINE
From 08-JUN-12 15:30:00 to 08-JUN-12 15:34:00 (EST-5)
Location: WINDHAM CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm produced 1 inch hail in Windham.
A persistent upper level ridge was over the SE region. Despite a strong inversion, enough diurnal instability combined with a prevailing west coast sea breeze and outflows as well as a lingering frontal boundary occurred to spawn scattered severe afternoon and evening thunderstorms.

Thunderstorm Wind in WARE, GEORGIA
From 01-JUL-12 21:25:00 to 01-JUL-12 21:25:00 (EST-5)
Location: HEBARDVILLE
Magnitude: 50.00 EG
Reported by: Trained Spotter

Trees and power lines were blown down on the west side of Waycross. The time of damage was based on radar imagery.

Thunderstorm Wind in APPLING, GEORGIA
From 01-JUL-12 20:20:00 to 01-JUL-12 20:20:00 (EST-5)
Location: BAXLEY MUNI ARPT
Magnitude: 50.00 EG
Reported by: State Official

Power lines were blown down near the county farm plant outside of Baxley. The time of damage was based on radar.

Thunderstorm Wind in APPLING, GEORGIA
From 01-JUL-12 20:20:00 to 01-JUL-12 20:20:00 (EST-5)
Location: BAXLEY
Magnitude: 50.00 EG
Reported by: State Official

Trees were blown down near Martin Luther King Drive in Baxley. The time of damage was based on radar.

Thunderstorm Wind in COFFEE, GEORGIA
From 01-JUL-12 20:52:00 to 01-JUL-12 20:52:00 (EST-5)
Location: RELEE
Magnitude: 50.00 EG
Reported by: Emergency Manager

Trees were blown down from thunderstorm winds. The time of the event was based on radar.

Thunderstorm Wind in BRANTLEY, GEORGIA
From 01-JUL-12 21:45:00 to 01-JUL-12 21:45:00 (EST-5)
Location: NAHUNTA
Magnitude: 50.00 EG
Reported by: State Official

Trees and power lines were blown down. The time of damage was based on radar imagery.

Thunderstorm Wind in CAMDEN, GEORGIA
From 01-JUL-12 22:10:00 to 01-JUL-12 22:10:00 (EST-5)
Location: ST MARYS
Magnitude: 50.00 EG
Reported by: State Official

Eight to ten trees were blown down across the county along with 4-5 transformer blown down. The power was out in St. Marys. The time of wind damage was based on radar imagery.

Thunderstorm Wind in COFFEE, GEORGIA
From 01-JUL-12 20:45:00 to 01-JUL-12 20:45:00 (EST-5)
Location: LEHIGH
Magnitude: 50.00 EG
Reported by: Utility Company

Power lines were damaged along Fire Line Drive from thunderstorm winds. The time of event damage was based on radar.

Lightning in COFFEE, GEORGIA
From 01-JUL-12 21:00:00 to 01-JUL-12 21:00:00 (EST-5)
Location: NICHOLLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A citizen was struck by lightning and taken to the hospital.

Thunderstorm Wind in JEFF DAVIS, GEORGIA
From 01-JUL-12 20:06:00 to 01-JUL-12 20:06:00 (EST-5)
Location: HAZELHURST
Magnitude: 50.00 EG
Reported by: State Official

Numerous trees were blown down in Hazelhurst. The time of damage was based on radar imagery.

Thunderstorm Wind in GLYNN, GEORGIA
From 01-JUL-12 21:30:00 to 01-JUL-12 21:30:00 (EST-5)
Location: PYLES MARSH
Magnitude: 50.00 EG
Reported by: State Official

Trees and power lines were blown down across the county. The time of damage was based on radar imagery of the outflow gust front.
An unstable airmass was in place across the area with effective shear around 30 knots.  Max delta-thetae was around 25C with some mid level dry air.  The result was scattered thunderstorms with hail and gusty winds.

Hail in LEON, FLORIDA
From 15-MAY-12 14:34:00 to 15-MAY-12 14:34:00 (EST-5)
Location: TALLAHASSEE COMMUNITY AIRPORT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured nickel sized hail and estimated wind gusts around 40 mph near Tower Road.
Heavy rainfall occurred north of Interstate 64, where bands of thunderstorms repeatedly moved across the same area during the night. The storms were fed by a strong southwest low-level flow of moist and unstable air. This feed of moisture and instability developed ahead of a cold front as it moved southeast into central Illinois.

Heavy Rain in GIBSON, INDIANA
From 26-SEP-12 00:00:00 to 26-SEP-12 06:00:00 (CST-6)
Location: HAZLETON
Property damage: 10.00K
Crop damage: 0.00K
Reported by: COOP Observer

The 24-hour rainfall at Hazleton was 3.60 inches. Most of this rain fell before dawn on the 26th. A washout that occurred along a small creek broke a buried communications cable. The cable cut interrupted data flow, including data from the weather radar at Owensville.

Heavy Rain in PIKE, INDIANA
From 26-SEP-12 00:00:00 to 26-SEP-12 07:00:00 (EST-5)
Location: PETERSBURG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The 24-hour rainfall was 3.22 inches. Most of this rain fell before dawn on the 26th.
A cold front approached the Mid Atlantic from the west during the afternoon.  Instability and wind shear led to the development of severe thunderstorms that produced damaging winds and hail.

Hail in ALLEGANY, MARYLAND
From 09-AUG-12 12:35:00 to 09-AUG-12 12:35:00 (EST-5)
Location: LONG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ALLEGANY, MARYLAND
From 09-AUG-12 12:40:00 to 09-AUG-12 12:40:00 (EST-5)
Location: LOCUST GROVE
Magnitude: 52.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Large tree down onto a residence along Iowa Dr NW.

Thunderstorm Wind in BALTIMORE, MARYLAND
From 09-AUG-12 16:20:00 to 09-AUG-12 16:20:00 (EST-5)
Location: BELMONT
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Department of Highways

Tree down at Nuwood Drive and Baltimore National Pike.

Hail in MONTGOMERY, MARYLAND
From 09-AUG-12 18:20:00 to 09-AUG-12 18:20:00 (EST-5)
Location: LAYHILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 09-AUG-12 18:20:00 to 09-AUG-12 18:20:00 (EST-5)
Location: NORBECK
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Department of Highways

Tree down near vicinity of Rt 650 at Georgia Ave.

Thunderstorm Wind in MONTGOMERY, MARYLAND
From 09-AUG-12 18:05:00 to 09-AUG-12 18:05:00 (EST-5)
Location: HOMEWOOD
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

Light pole knocked down near intersection of Rt 97 and Reedie Rd.
A strong upper level disturbance ahead of an approaching cold front combined with a very unstable airmass to produce showers and thunderstorms over the coastal waters during the afternoon of September 18th, 2012. A few thunderstorms became severe with strong marine wind gusts.

Marine Thunderstorm Wind in CP LOOKOUT TO SURF CITY NC OUT 20NM, ATLANTIC SOUTH
From 18-SEP-12 11:59:00 to 18-SEP-12 11:59:00 (EST-5)
Location: BEAUFORT INLET
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Beaufort Airfield observed a 41 knot marine thunderstorm wind gust.

Marine Thunderstorm Wind in OREGON INLET TO CP HATTERAS NC OUT 20NM, ATLANTIC SOUTH
From 18-SEP-12 14:40:00 to 18-SEP-12 14:40:00 (EST-5)
Location: BUXTON
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

WeatherFlow site on Avon Pier reported a 41 knot marine thunderstorm wind gust.

Marine Thunderstorm Wind in OREGON INLET TO CP HATTERAS NC OUT 20NM, ATLANTIC SOUTH
From 18-SEP-12 14:35:00 to 18-SEP-12 14:35:00 (EST-5)
Location: RODANTHE
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

WeatherFlow site at KHK Resort observed a 40 knot marine thunderstorm wind gust.

Marine Thunderstorm Wind in PAMLICO SOUND, ATLANTIC SOUTH
From 18-SEP-12 12:31:00 to 18-SEP-12 12:31:00 (EST-5)
Location: CEDAR ISLAND
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Piney Island Bombing Range (KNBT) reported a 39 knot marine thunderstorm wind gust.

Marine Thunderstorm Wind in CP HATTERAS TO OCRACOKE INLET NC OUT 20NM, ATLANTIC SOUTH
From 18-SEP-12 14:03:00 to 18-SEP-12 14:03:00 (EST-5)
Location: HATTERAS INLET
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Billy Mitchell Field (KHSE) observed a 38 knot marine thunderstorm wind gust.