An approaching cold front helped trigger strong to locally severe thunderstorms across Sussex County in two waves. The first occurred during the middle of the morning on the 25th and the second during the early  afternoon later that day.  Both series of thunderstorms concentrated damage in the southeast half of the county with the Long Neck area affected the most.  Approximately 6,500 Delaware Electric Cooperative and Delmarva Power and Light customers lost power from Millsboro to Angola to Lewes and Dewey Beach. More than a half dozen power poles were blown down. About 2,800 homes and businesses were still without power at Noon EDT on the 25th.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 08:06:00 to 25-JUN-12 08:06:00 (EST-5)
Location: ANGOLA BEACH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm knocked down several trees and power lines in Angola, generally to the east of Delaware State Route 24.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 07:50:00 to 25-JUN-12 07:50:00 (EST-5)
Location: ROSEDALE BEACH
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

A severe thunderstorm damaged two county buildings that were under construction at the Inland Bays Wastewater Treatment plant near Millsboro. On one building, a large section of the metal roofing flew off. The second building collapsed. No injuries were reported.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 08:04:00 to 25-JUN-12 08:04:00 (EST-5)
Location: OAK ORCHARD
Magnitude: 52.00 EG
Property damage: 25.00K
Reported by: Emergency Manager

A severe thunderstorm knocked down numerous trees, at least one power pole and collapsed a barn in Long Neck around 905 AM EDT on June 25th.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 08:05:00 to 25-JUN-12 08:05:00 (EST-5)
Location: ANGOLA BEACH
Magnitude: 52.00 EG
Property damage: 50.00K
Reported by: Emergency Manager

A severe thunderstorm knocked down several trees onto homes and sheds along Banks Road and Canal Drive in Oak Orchard around 905 AM EDT on June 25th.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 07:55:00 to 25-JUN-12 07:55:00 (EST-5)
Location: MILLSBORO
Magnitude: 50.00 EG
Reported by: State Official

A severe thunderstorm knocked trees down in the Millsboro area around 855 AM EDT on June 25th.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 09:20:00 to 25-JUN-12 09:20:00 (EST-5)
Location: WHITESVILLE
Magnitude: 50.00 EG
Reported by: Public

A severe thunderstorm knocked down several trees, causing damage to fences along Line Church Road in Delmar around 1020 AM EDT on June 25th.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 11:47:00 to 25-JUN-12 11:48:00 (EST-5)
Location: PILOTTOWN
Magnitude: 59.00 MG
Reported by: Mesonet

A severe thunderstorm produced a 68 MPH wind gust at the Weatherflow station in Lewes at 1247 PM EDT on June 25th and a 59 mph wind gust at the NOS station also in Lewes at 1248 PM EDT.

Thunderstorm Wind in SUSSEX, DELAWARE
From 25-JUN-12 08:13:00 to 25-JUN-12 08:13:00 (EST-5)
Location: DEWEY BEACH
Magnitude: 60.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: WLON

A severe thunderstorm caused wind damage as it moved through Dewey Beach. The thunderstorm winds damaged mobile homes on Rodney Street. The severe thunderstorm ripped apart sections of the observation deck roof, the deck itself and awning of the Lighthouse Restaurant. The Rusty Rudder Restaurant also was damaged. The severe thunderstorm also knocked down trees and electrical poles. There was one pole fire on Collins Street  Northbound Delaware State Route 1 was closed until the afternoon of the 25th. Delmarva Power and Light reported about 170 of its customers in Dewey Beach lost power.  A wind gust of 69 mph was measured at a WeatherFlow mesonet site within Dewey Beach.