New Jersey, 1997

Flash Flood in New Jersey, August 20 to 21, 1997

August 20 to 21, 1997 · NWS PHI · 1 event in 1 county or zone

Torrential rain fell across southeast New Jersey as a low pressure system developed over the Delmarva Peninsula and slowly moved northeast across southern New Jersey. A series of thunderstorms developed along this low pressure system's frontal boundaries and trained or moved over the same areas.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$500,000
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PHI wrote it up.

Torrential rain fell across southeast New Jersey as a low pressure system developed over the Delmarva Peninsula and slowly moved northeast across southern New Jersey. A series of thunderstorms developed along this low pressure system's frontal boundaries and trained or moved over the same areas. This caused extremely heavy rain to fall over several hours especially across southern parts of Ocean County. Doppler Radar storm total estimates in Little Egg Harbor Township were between 8 and 10 inches. Other storm totals included 6.75 inches in Beach Haven, 6 inches in Tom's River and 4.75 inches in East Dover. Miraculously no serious injuries were reported. Little Egg Harbor Township, especially on Mystic Island, reported the worst flooding in the county. Vehicles were floating down the streets. About 60 persons had to be evacuated to the Pinelands Middle School. About half of them were boy scouts in the Sea Pirate Campground. Emergency personnel responded to 225 calls for help. Lake Pohatcong overflowed and flooded U.S. Route 9 with 4 to 5 feet of water. In Tuckerton, emergency personnel also responded to numerous calls for help. Flooding was particularly bad along South Green and Center Streets. In Stafford Township, several streets were impassable in the Ocean Acres and Beach Haven West neighborhoods. Even an ambulance became stuck in flood waters. In Dover Township, a home under construction collapsed because of the heavy rain and strong winds. Damage was estimated at $200,000. In Brick Township, water punched a hole through a berm around a retention basin and undermined road work along Brick Boulevard. The most harrowing experience of the night was felt by a three boat party of 13 persons that were anchored near Little Egg Harbor. As the winds increased, one boat broke away from its anchor and the three adults and two children aboard the "Little Lou" were tossed by strong waves without any radio contact. The boat grounded on a sandbar and they were rescued about three hours later.

The radar

The Philadelphia radar (KDIX), 16 km away, was scanning. The volume nearest the first event began at 04:27 UTC.

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Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Ocean

When
August 20, 11:30 PM EST to August 21, 7:00 AM EST
Where
Ocean County, Tuckerton
Property damage
$500,000
Coordinates
39.866, -74.250 (the zone’s center; the record gives no point)

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in New Jersey in 1997Every state in 1997This day in weather historyWarnings in New Jersey, August 1997

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5621743.