An unseasonably strong weather system affected the mid-Atlantic on April 30, 2021. A cold front moved through the region in the predawn hours of April 30, associated with low pressure moving into coastal New England. An upper level disturbance and a secondary cold front then approached late in the day on the 30th. This system interacted with the departing low pressure over New England, causing that low to rapidly intensify as it began moving towards the Canadian maritimes. With high pressure over the Midwest, this led to a very strong pressure gradient over the mid-Atlantic. Combined with strong dynamics associated with the secondary cold front, a lengthy period of windy conditions developed for much of the day on the 30th. Widespread wind gusts of 45 to 55 mph, with some gusts of 60 to 65 mph, occurred. This, combined with many trees across the region already bearing leaves, led to numerous instances of tree damage and power outages across the region. Scattered showers associated with the secondary front also helped to locally enhance wind damage. Winds finally began to decrease by the night of the 30th as the gradient gradually weakened.

High Wind in HUNTERDON, NEW JERSEY
From 30-APR-21 15:00:00 to 30-APR-21 20:00:00 (EST-5)
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

Several reports of downed trees and wires were received, including on Woodchurch Rd, US-202, and NJ-29.

High Wind in WESTERN OCEAN, NEW JERSEY
From 30-APR-21 14:00:00 to 30-APR-21 21:00:00 (EST-5)
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Department of Highways

Multiple reports of downed trees and power lines were received, and measured wind gusts in the coastal portion of the county suggest gusts to around 60 mph likely occurred.

High Wind in EASTERN OCEAN, NEW JERSEY
From 30-APR-21 14:00:00 to 30-APR-21 21:00:00 (EST-5)
Magnitude: 58.00 MG
Crop damage: 0.00K
Reported by: Mesonet

A 67 mph wind gust was measured near Barnegat Light, with several other measured gusts just under 60 mph recorded along the Ocean County coastline.

High Wind in WESTERN ATLANTIC, NEW JERSEY
From 30-APR-21 15:00:00 to 30-APR-21 20:00:00 (EST-5)
Magnitude: 56.00 MG
Crop damage: 0.00K
Reported by: ASOS

A 64 mph wind gust was measured at Atlantic City International Airport, among other reports of gusts over 50 mph and tree and utility damage.

High Wind in EASTERN ATLANTIC, NEW JERSEY
From 30-APR-21 15:00:00 to 30-APR-21 20:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Measurements from the inland portion of the county and surrounding coastal areas suggest wind gusts near to above 60 mph likely occurred on the Atlantic County coast.

High Wind in EASTERN CAPE MAY, NEW JERSEY
From 30-APR-21 15:00:00 to 30-APR-21 20:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Gusts as high as 56 mph were measured along the Cape May County coast, and some slightly higher gusts likely occurred based on offshore and nearby observations.

High Wind in WESTERN CAPE MAY, NEW JERSEY
From 30-APR-21 15:00:00 to 30-APR-21 20:00:00 (EST-5)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Gusts to near 60 mph likely occurred based on measurements in the coastal portion of the county, and a few reports of power outages were received.