Strong, gusty northwest winds circulating around an intensifying low pressure system and approaching high pressure system had the greatest impact across northern New Jersey and coastal southern New Jersey during the second half of the morning into the afternoon on the 4th. Peak wind gusts in these areas reached between 45 mph and 50 mph and knocked down weak tree limbs and wires. In the rest of the southern half of the state, while still windy, most peak wind gusts were less than 40 mph.
Peak wind gusts included 48 mph in Wantage (Sussex County), Cream Ridge and Sea Girt (both Monmouth County), 47 mph in Sea Isle City (Cape May County) and Waretown (Ocean County), 46 mph in Harvey Cedars (Ocean County) and 44 mph in Alexandria (Hunterdon County) and Princeton (Mercer County).
The strong winds followed the passage of a cold front in New Jersey during the early morning on the 4th.  A low pressure system on the front over southern New England intensified during the day as it moved toward the Canadian Maritimes. This increased the pressure gradient (difference) between it and an approaching high pressure system from the lower Missouri Valley.  Winds decreased late that afternoon as the high pressure system moved nearer and the low pressure went farther away in the Canadian Maritimes.

Strong Wind in MIDDLESEX, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 11:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in SOMERSET, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 11:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in SUSSEX, NEW JERSEY
From 04-APR-15 08:00:00 to 04-APR-15 16:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in WESTERN MONMOUTH, NEW JERSEY
From 04-APR-15 09:30:00 to 04-APR-15 11:30:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in EASTERN MONMOUTH, NEW JERSEY
From 04-APR-15 09:30:00 to 04-APR-15 13:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in HUNTERDON, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 11:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in WARREN, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 14:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in WESTERN OCEAN, NEW JERSEY
From 04-APR-15 09:00:00 to 04-APR-15 16:30:00 (EST-5)
Magnitude: 41.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in EASTERN OCEAN, NEW JERSEY
From 04-APR-15 07:30:00 to 04-APR-15 16:30:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in MORRIS, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 14:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in EASTERN ATLANTIC, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 14:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in MERCER, NEW JERSEY
From 04-APR-15 08:30:00 to 04-APR-15 11:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in EASTERN CAPE MAY, NEW JERSEY
From 04-APR-15 09:30:00 to 04-APR-15 13:30:00 (EST-5)
Magnitude: 41.00 MG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet

Strong Wind in WESTERN CAPE MAY, NEW JERSEY
From 04-APR-15 09:30:00 to 04-APR-15 13:30:00 (EST-5)
Magnitude: 40.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Mesonet