A slow moving warm front and a low pressure system that formed along it that enhanced the convergence brought flash flooding rains to southeastern New Jersey during the evening and overnight on the 12th. Hardest hit was Cumberland County where rainfall amounts reached as high as nine inches. Some homes were damaged and one injury occurred. A series of thunderstorms with very heavy rain formed and moved along a very slowly northward moving warm frontal boundary. The rain did not end until an occluded front passed through New Jersey just before sunrise on the 13th. Numerous showers and thunderstorms started during the afternoon of the 12th and the heaviest rain fell during the evening. The rain ended during the early morning on the 13th. Event precipitation totals averaged 3 to 9 inches with the highest amounts in Atlantic and Cumberland Counties. Homeowners that were affected by the flooding became eligible for disaster loans through the United States Small Business Association.
In addition to the fresh water flooding, the onshore flow combined with unusually high spring tides associated with the full moon to produce the most widespread minor tidal flooding during the evening and overnight high tide cycle on the 12th. This extended up the Delaware Bay and Delaware River. Minor tidal flooding also occurred during the evening high tide cycles on the 9th through the 11th, but the crests were lower. Minor tidal flooding also occurred with the morning high tides at Sandy Hook (Monmouth County) on the mornings of the 12th and 13th.  The highest tides of the event occurred on the 12th and included 6.59 feet above mean lower low water in Atlantic City (Atlantic County), minor tidal flooding starts at 6.0 feet above mean lower low water;  7.26 feet above mean lower low water in Cape May (Cape May County), minor tidal flooding starts at 6.7 feet above mean lower low water and 7.27 feet above mean lower low water in Sandy Hook (Monmouth County), minor tidal flooding starts at 6.7 feet above mean lower low water. The tidal affected Watson Creek in Manasquan (Monmouth County) had minor flooding on the evening of the 12th also. It crested at 6.13 feet, minor flooding starts at 5.5 feet. Minor tidal flooding extended into the tidal sections of the Delaware River on the early morning of the 13th. On Reedy Island (New Castle County), the high tide reached 7.60 feet above mean lower low water. Minor tidal flooding starts at 7.2 feet above mean lower low water.  In Philadelphia, the high tide reached 8.44 feet above mean lower low water. Minor tidal flooding starts at 8.2 feet above mean lower low water.

Flash Flood in CUMBERLAND, NEW JERSEY
From 12-AUG-14 21:35:00 to 13-AUG-14 01:30:00 (EST-5)
Location: SOUTH VINELAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorms with torrential downpours caused flash flooding within Vineland. Flooded roadways included New Jersey State Route 47. There were several vehicle rescues from flooded roadways. Event precipitation totals included 8.94 inches in Millville, 8.60 inches in Newport, 6.51 inches in Vineland, 5.43 inches in Fairfield Township, 4.62 inches in Upper Deerfield and 4.51 inches in Bridgeton.

Flash Flood in CUMBERLAND, NEW JERSEY
From 12-AUG-14 20:45:00 to 13-AUG-14 00:00:00 (EST-5)
Location: DIVIDING CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorms with torrential downpours caused small stream and poor drainage flash flooding in Downe and Commercial Townships. Doppler Radar storm total estimates reached 7 inches. Actual event precipitation totals included 8.94 inches in Millville, 8.60 inches in Newport, 6.51 inches in Vineland, 5.43 inches in Fairfield Township, 4.62 inches in Upper Deerfield and 4.51 inches in Bridgeton.

Flash Flood in MONMOUTH, NEW JERSEY
From 13-AUG-14 01:00:00 to 13-AUG-14 03:00:00 (EST-5)
Location: ALLENHURST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms with torrential downpours caused flash flooding in Deal. Numerous roadways were flooded. Both Norwood Avenue (New Jersey State Route 71) were flooded and impassable near the Poplar Brook. Heavy rain did cause additional poor drainage flooding in eastern Monmouth County. Event precipitation totals included 5.91 inches in Manasquan, 4.94 inches in Wall Township, 4.76 inches in Neptune City, 4.59 inches in Belmar, 4.56 inches in Sea Girt, 4.25 inches in Long Branch, 3.98 inches in Eatontown, 3.84 inches in Ocean Township and 3.12 inches in Howell Township.

Flash Flood in CUMBERLAND, NEW JERSEY
From 12-AUG-14 20:15:00 to 13-AUG-14 01:30:00 (EST-5)
Location: (MIV)MILLVILLE MUNI
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorms with torrential downpours caused creek and poor drainage flash flooding in Millville. Hardest hit were homes along Rhonda Drive near the White Marsh Run. Three homes suffered collapsed basement walls. One woman was injured when the basement walls collapsed and she became trapped. The high water mark on some homes reached two feet above their ground level and evacuations occurred. Elsewhere in Millville, numerous vehicles were stranded along New Jersey State Route 47.
Event precipitation totals included 8.94 inches in Millville, 8.60 inches in Newport, 6.51 inches in Vineland, 5.43 inches in Fairfield Township, 4.62 inches in Upper Deerfield and 4.51 inches in Bridgeton.

Flash Flood in ATLANTIC, NEW JERSEY
From 12-AUG-14 22:05:00 to 13-AUG-14 01:30:00 (EST-5)
Location: CARDIFF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms with torrential downpours caused flash flooding in Egg Harbor Township. Franklin Avenue near the headwaters of the Cedar Branch was flooded and closed.  Event precipitation totals in Atlantic County included 6.79 inches in Buena Vista Township, 6.17 inches in Estell Manor, 5.58 inches at the Atlantic City International Airport, 5.55 inches in Egg Harbor City, 4.78 inches in Mays Landing, 4.14 inches in Mullica Township, 3.89 inches in Egg Harbor Township, 3.47 inches in Hammonton and 2.54 inches in Margate City.

Flash Flood in ATLANTIC, NEW JERSEY
From 12-AUG-14 22:30:00 to 13-AUG-14 01:30:00 (EST-5)
Location: MC KEE CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorms with torrential downpours caused flash flooding in Hamilton Township. Both the Black Horse Pike (U.S Route 322) and Cologne Avenue were closed due to high water. Event precipitation totals in Atlantic County included 6.79 inches in Buena Vista Township, 6.17 inches in Estell Manor, 5.58 inches at the Atlantic City International Airport, 5.55 inches in Egg Harbor City, 4.78 inches in Mays Landing, 4.14 inches in Mullica Township, 3.89 inches in Egg Harbor Township, 3.47 inches in Hammonton and 2.54 inches in Margate City.

Flash Flood in ATLANTIC, NEW JERSEY
From 12-AUG-14 22:15:00 to 13-AUG-14 01:30:00 (EST-5)
Location: DOROTHY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorms with torrential downpours caused flash flooding in Buena Vista and nearby parts of Hamilton Township. Doppler Radar storm total estimates reached around 6.5 inches. Actual event precipitation totals in Atlantic County included 6.79 inches in Buena Vista Township, 6.17 inches in Estell Manor, 5.58 inches at the Atlantic City International Airport, 5.55 inches in Egg Harbor City, 4.78 inches in Mays Landing, 4.14 inches in Mullica Township, 3.89 inches in Egg Harbor Township, 3.47 inches in Hammonton and 2.54 inches in Margate City.

Flash Flood in ATLANTIC, NEW JERSEY
From 12-AUG-14 22:30:00 to 13-AUG-14 01:30:00 (EST-5)
Location: COLOGNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorms with torrential downpours caused flash flooding in Galloway Township. Doppler Radar storm total estimates nearly reached 6.5 inches. Actual event precipitation totals in Atlantic County included 6.79 inches in Buena Vista Township, 6.17 inches in Estell Manor, 5.58 inches at the Atlantic City International Airport, 5.55 inches in Egg Harbor City, 4.78 inches in Mays Landing, 4.14 inches in Mullica Township, 3.89 inches in Egg Harbor Township, 3.47 inches in Hammonton and 2.54 inches in Margate City.

Flash Flood in OCEAN, NEW JERSEY
From 13-AUG-14 00:30:00 to 13-AUG-14 03:30:00 (EST-5)
Location: PT PLEASANT BEACH
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorms with torrential downpours caused flash flooding in eastern Ocean County. Doppler Radar storm total estimates reached 9 inches. In Stafford Township, several vehicles were stranded in high water on New Jersey State Route 72.  Also in the township, an oil tanker was stuck on a washed out section of New Jersey State Route 72 in the bridge construction area.  In Seaside Park, New Jersey State Route 35 was closed north of 5th Avenue. In Point Pleasant, many roadways were flooded, up to two feet deep. Flooding affected the New Jersey Transit Commuter Coast Line Depot in Bay Head. Crews could not access the trains. Buses honored train tickets along the line on the 13th.
Actual precipitation event totals included 8.35 inches in Lacey Township, 7.50 inches in Little Egg Harbor Township, 7.24 inches in Stafford Township, 6.55 inches in Lavallette, 6.02 inches in Point Pleasant, 5.87 inches in Brick Township, 5.43 inches in Berkeley Township,  4.59 inches in Seaside Heights, 4.39 inches in Toms River, 4.02 inches in Lakewood and 2.51 inches in Jackson Township.