The combination of an unseasonably hot and humid air mass, an approaching cold front and strong winds aloft caused a squall line of strong to severe thunderstorms to move through Delaware during the late afternoon and early evening of the 23rd. Hardest hit was the northern part of the state. A wind gust of 66 mph was recorded at the New Castle County Airport.  Delmarva Power and Light reported 63,000 of its customers lost power on the Delmarva Peninsula (14,000 in New Castle County) and it took until the 26th to fully restore power in Delaware. Verizon phone service was also interrupted.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:49:00 to 23-JUN-15 16:49:00 (EST-5)
Location: HOLLY OAK
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down several trees in the Minquadale section of New Castle Hundred. A couple of homes were damaged by the fallen trees.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:52:00 to 23-JUN-15 16:52:00 (EST-5)
Location: ST GEORGES
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet site measured a wind gust of 58 mph during a severe thunderstorm at Saint George's Heights (Red Lion Hundred).

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:48:00 to 23-JUN-15 16:48:00 (EST-5)
Location: BEAR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a few trees and wires in Bear (New Castle Hundred).

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:50:00 to 23-JUN-15 16:50:00 (EST-5)
Location: NEW CASTLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a few trees and wires in New Castle.

Thunderstorm Wind in SUSSEX, DELAWARE
From 23-JUN-15 19:30:00 to 23-JUN-15 19:30:00 (EST-5)
Location: WHITESVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

A severe thunderstorm snapped a pole northeast of Delmar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:57:00 to 23-JUN-15 16:57:00 (EST-5)
Location: MIDDLETOWN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a few trees and wires in Middletown (Saint George's Hundred).

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:40:00 to 23-JUN-15 16:40:00 (EST-5)
Location: MEADOWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down trees and wires in the southern part of Mill Creek Hundred in Pike Creek.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:35:00 to 23-JUN-15 16:35:00 (EST-5)
Location: HOCKESSIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down trees and wires in Hockessin (Mill Creek Hundred).

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:39:00 to 23-JUN-15 16:39:00 (EST-5)
Location: NEWARK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down trees and wires in Newark (White Clay Hundred).

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:48:00 to 23-JUN-15 16:48:00 (EST-5)
Location: GLASGOW
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A mesonet site recorded a 59 mph wind gust during a severe thunderstorm in Glasgow (Pencader Hundred).  A trained Skywarn Spotter also reported downed trees in Glasgow.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:45:00 to 23-JUN-15 16:45:00 (EST-5)
Location: (ILG)WILMINGTON ARPT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A severe thunderstorm generated a 66 mph wind gust at the New Castle County Airport.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:47:00 to 23-JUN-15 16:48:00 (EST-5)
Location: LANCASTER VLG
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm tore off the roof of a third story building within Wilmington.  Wind damage occurred along Elm and Madison Streets within the city.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:46:00 to 23-JUN-15 16:46:00 (EST-5)
Location: TALLEYVILLE
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained Skywarn Spotter measured a wind gust of 62 mph in Talleyville (Brandywine Hundred) during a severe thunderstorm.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 23-JUN-15 16:42:00 to 23-JUN-15 16:42:00 (EST-5)
Location: GREENVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm knocked down a few trees and wires in Greenville (Christina Hundred).