The combination of persistent northwest winds and spring tides following the new moon caused blowout tides on the tidal Delaware River and its tidal tributaries as well as upper Delaware Bay with both low tide cycles on the 20th. While low tides reached blowout levels, they were not as low as they were on the 15th of the month. Around Raritan Bay and Monmouth County, blowout tides also occurred with both low tide cycles on the 20th, and also the early morning low tide cycle on the 21st.  Across the rest of the coastal Atlantic New Jersey and lower Delaware Bay, blowout tides occurred with all four low tide cycles on the 20th and 21st. The lowest tides during this event occurred with the low tide cycle that started on the ocean front during the afternoon of the 20th and worked its way into Delaware Bay and the tidal Delaware River during the afternoon and evening of the 20th.
The lowest tide at Sandy Hook (Monmouth County) was 2.79 feet below mean lower low water. This was the lowest tide since March of 2008. The lowest tide in Atlantic City (Atlantic County) was 2.82 feet below mean lower low water. This was the lowest tide since March 2005. The lowest tide in Cape May (Cape May County) was 2.90 feet below mean lower low water. At Brandywine Shoal Light in lower Delaware Bay, the lowest tide was 2.48 feet below mean lower low water.  At Ship John Shoal Light in upper Delaware Bay, the lowest tide was 2.32 feet below mean lower low water.  At Reedy Point (New Castle County), the lowest tide was 2.43 feet below mean lower low water. At Delaware City (New Castle County), the lowest tide was 2.58 feet below mean lower low water. At Marcus Hook (Delaware County), the lowest tide was 2.69 feet below mean lower low water. In Philadelphia, the lowest tide was 2.31 feet below mean lower low water. In Burlington (Burlington County), the lowest tide was 2.04 feet below mean lower low water and on Newbold Island (Bucks County) the lowest tide was 2.28 feet below mean lower low water.  As the latest arctic high pressure system reached the coastal waters on the 21st, the offshore push of water ended and tides returned closer to the normal on the tidal Delaware River, Raritan Bay, coastal Monmouth County and upper Delaware Bay on the 21st and the lower Delaware Bay and on the ocean side on the 22nd.

Astronomical Low Tide in SALEM, NEW JERSEY
From 20-FEB-15 05:00:00 to 20-FEB-15 21:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in GLOUCESTER, NEW JERSEY
From 20-FEB-15 07:00:00 to 20-FEB-15 22:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in CAMDEN, NEW JERSEY
From 20-FEB-15 08:00:00 to 20-FEB-15 22:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in NORTHWESTERN BURLINGTON, NEW JERSEY
From 20-FEB-15 09:30:00 to 21-FEB-15 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in EASTERN OCEAN, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in MIDDLESEX, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in WESTERN MONMOUTH, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in EASTERN ATLANTIC, NEW JERSEY
From 20-FEB-15 01:30:00 to 21-FEB-15 04:30:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in WESTERN OCEAN, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in SOUTHEASTERN BURLINGTON, NEW JERSEY
From 20-FEB-15 02:00:00 to 21-FEB-15 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in EASTERN ATLANTIC, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in WESTERN ATLANTIC, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in EASTERN CAPE MAY, NEW JERSEY
From 20-FEB-15 01:00:00 to 21-FEB-15 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in WESTERN CAPE MAY, NEW JERSEY
From 20-FEB-15 01:30:00 to 21-FEB-15 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

Astronomical Low Tide in CUMBERLAND, NEW JERSEY
From 20-FEB-15 03:00:00 to 20-FEB-15 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON