A warm front moved through the mid-Atlantic on the morning of April 9. During the late morning and early afternoon, the mid-Atlantic was in a narrow warm sector with a cold front quickly approaching from the west as low pressure tracked through the Great Lakes and then began to redevelop over southern New England. Ahead of the front, a strongly forced and highly sheared environment existed. Heating and moisture were limited in the small warm sector region, but sufficient instability developed to support convective development, and a broken line of showers and thunderstorms moved across the region, causing a considerable amount of wind damage.
That evening, additional severe weather occurred as several post-frontal squalls developed. One of these squalls developed into a low-topped thunderstorm. Steep lapse rates and strong wind profiles allowed this storm to also produce wind damage over southeastern Pennsylvania, northeast Maryland, northern Delaware, and southern New Jersey.

Thunderstorm Wind in KENT, DELAWARE
From 09-APR-20 12:22:00 to 09-APR-20 12:22:00 (EST-5)
Location: CHESNUT GROVE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees and power lines reported down in this area. Time estimated from radar.

Thunderstorm Wind in SUSSEX, DELAWARE
From 09-APR-20 13:00:00 to 09-APR-20 13:00:00 (EST-5)
Location: BRIDGEVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Two power poles and wires were blown down. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 22:45:00 to 09-APR-20 22:45:00 (EST-5)
Location: HARMONY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several reports of trees and power lines down in the area of Milltown Rd. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 22:50:00 to 09-APR-20 22:50:00 (EST-5)
Location: NORTH STAR
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees and wires were downed near the intersection of Upper Pike Creek Rd and Spring Side Ln. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 22:52:00 to 09-APR-20 22:52:00 (EST-5)
Location: MERMAID
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees and wires were downed near the intersection of Millcreek Rd and Valley Brook Dr. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 22:58:00 to 09-APR-20 22:58:00 (EST-5)
Location: GLASGOW
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Several reports of trees and power lines down near Glasgow and Woodside Manor. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 23:00:00 to 09-APR-20 23:00:00 (EST-5)
Location: COLLINS PARK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several reports of trees and wires down near Chelsea Manor Park. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 23:00:00 to 09-APR-20 23:00:00 (EST-5)
Location: HOLLY OAK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several reports of trees and power lines down near Memorial Dr. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 23:03:00 to 09-APR-20 23:03:00 (EST-5)
Location: MONROE PARK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Trees and wires were downed near the intersection of West Second St and North Adams St. Time estimated from radar.

Thunderstorm Wind in NEW CASTLE, DELAWARE
From 09-APR-20 23:00:00 to 09-APR-20 23:00:00 (EST-5)
Location: (ILG)WILMINGTON ARPT
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

New Castle County Airport.