74
Recorded events
0
Direct deaths
0
Direct injuries
$5.2M
Property damage
Flash Flood in Gloucester County, New Jersey: 74 recorded events between 1996 and 2023. The strongest on record measured 0. That places the county #307 nationally and #11 statewide for this hazard.
Decade by decade
Flash Flood in Gloucester County, New Jersey: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Gloucester County is the 2010s, when 39 of the county's 74 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Gloucester County archive, flash flood makes up 13.4% of all recorded severe weather across 9 hazard types. Nationally the county sits at #307 for this hazard and #11 within New Jersey, putting it in the 90.0 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Gloucester County with 21 recorded events, while Apr is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Sep 11, 2023 | GIBBSTOWN | 0 | $0 |
| Jul 9, 2023 | PAULSBORO | 0 | $0 |
| Aug 29, 2020 | PITMAN | 0 | $0 |
| Aug 12, 2020 | WOODBURY HGTS | 0 | $0 |
| Aug 12, 2020 | SEWELL | 0 | $0 |
| Aug 12, 2020 | WOODBURY HGTS | 0 | $0 |
| Aug 7, 2020 | MALAGA | 0 | $0 |
| Aug 7, 2020 | HARRISONVILLE | 0 | $0 |
| Aug 7, 2020 | SWEDESBORO | 0 | $0 |
| Aug 7, 2020 | BRIDGEPORT | 0 | $0 |
Other hazards here
More from Gloucester County
- Thunderstorm Wind 310
- Hail 52
- Heavy Rain 47
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Thunderstorms with repeated torrential downpours caused flash flooding of roadways, streams and basements in the southern half of Gloucester County. Roadway flooding was reported in Pitman, Glassboro, Franklin, Washington and Monroe Townships. In Malaga (Franklin Township), U.S. Route 40 and New Jersey State Route 47 were flooded. The latter was still closed on the 15th. Conrail train service was stopped because of a sinkhole. In Glassboro, the foundation of a house on Deptford Drive collapsed. A motorist was rescued from flood waters on Delsea Drive (New Jersey State Route 47) near Clayton. In Clayton itself, a house became unstable because of its undermined foundation on North Main Street. In Williamstown (Monroe Township), flooding was reported along the Black Horse Pike (New Jersey State Route 42). Flooding also commenced along the Raccoon Creek. Event precipitation totals included 8.53 inches in Franklin Township and 5.92 inches in Woolwich Township.
Thunderstorms with torrential downpours caused flash flooding along the western tier of Gloucester County. In Paulsboro, numerous roads were flooded and closed. Some homes were flooded near the Mantua Creek. In Greenwich Township, one motorist had to be rescued from flood waters. A sewer main breakage exacerbated the ongoing flooding. Field flash flooding damaged tomato crops in the county. Event precipitation totals included 4.55 inches in East Greenwich Township, 4.25 inches in Mickleton, 4.15 inches in Westville, 3.78 inches in West Deptford, 3.77 inches in Mullica Hill, 2.75 inches in Woolwich Township, 2.30 inches in Wenonah and 1.91 inches in South Harrison Township.
Thunderstorms with torrential downpours caused flash flooding of numerous roadways and creeks, especially in central and western Gloucester County. Vehicles became trapped in flood waters and rescues were performed. Roadway closures included New Jersey State Route 55 and Delsea Drive in Deptford, Kings Highway in Woodbury, New Jersey State Route 44 in Paulsboro, Kings Highway in West Deptford, Main Street in Glassboro and New Jersey State Route 42 in Monroe Township. The Mantua Creek at Pitman was above its 5 foot flood stage from 1050 a..m. EDT through 338 p.m. EDT on the 13th. It crested at 5.80 feet at 1215 p.m. EDT. The Raccoon Creek also flooded and crested at 14.69 feet at 2 p.m. EDT on the 13th. Event precipitation totals included 4.50 inches in Washington Township, 4.28 inches in Monroe Township, 4.14 inches in Clayton, 3.80 inches in Glassboro and 3.19 inches in Pitman.
Quick answers
Frequently asked
How many flash flood events are on record in Gloucester County, New Jersey?
74 flash flood events are recorded in Gloucester County between 1996 and 2023, causing 0 direct deaths.
What is the strongest flash flood recorded in Gloucester County?
The strongest flash flood on record in Gloucester County measured 0.
Where does the flash flood data for Gloucester County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Gloucester County, New Jersey.” Severe Weather History. severeweatherhistory.com/county/new-jersey/gloucester-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.