Flash Flood, Somerset
- When
- September 1, 6:45 PM EST to 9:45 PM EST
- Where
- Somerset County, West Central Portion
- Reported by
- TRAINED SPOTTER
- Coordinates
- 40.564, -74.616 (the zone’s center; the record gives no point)
Flash Flooding in New Jersey, September 1, 2000
Thunderstorms with torrential downpours moved over the same locations of Eastern Hunterdon County and West Central Somerset County. Hardest hit was Flemington in Hunterdon County and Branchburg Township in Somerset County.
Where it happened
Every event with a place to put it; 2 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $100,000
- Crop damage
- None recorded
- Events
- 2
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.
Thunderstorms with torrential downpours moved over the same locations of Eastern Hunterdon County and West Central Somerset County. Hardest hit was Flemington in Hunterdon County and Branchburg Township in Somerset County. A SKYWARN Spotter in Branchburg measured 3.74 inches of rain within a two hour period. Nearly every roadway in the township including sections of U.S. Routes 22, 202 and 206 were flooded and closed. Several motorists were rescued from stranded vehicles. In Bound Brook, an overflowing stream flooded backyards. In Hunterdon County in Flemington, the torrential rains and sliding mud caused the west foundation wall of a house to collapse. The house was condemned and the occupants were sheltered in their daughter's house. Additional storm totals included 1.87 inches in Whitehouse Station (Hunterdon County) and 1.13 inches in Somerville (Somerset County). No serious injuries were reported.
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 flash flood. Local standard time, as filed.
Flash Flood, Hunterdon
- When
- September 1, 7:15 PM EST to 9:45 PM EST
- Where
- Hunterdon County, East Portion
- Property damage
- $100,000
- Reported by
- NEWSPAPER
- Coordinates
- 40.567, -74.912 (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
- Heat in Texas, September 1 to 23, 2000
- Heat in Texas, September 1 to 6, 2000
- Heat in Missouri, September 1 to 3, 2000
- Heat in Missouri, September 1 to 3, 2000
- Drought in Nebraska, September 1 to 30, 2000
- Drought in Iowa, September 1 to 6, 2000
- Flash Flooding and Hail in Michigan, September 1, 2000
- Drought in Texas, September 1 to 30, 2000
- Drought in Kansas, September 1 to 30, 2000
- Wildfire in California, September 1 to 10, 2000
- Drought in Kansas, September 1 to 25, 2000
- Wildfire in Montana, September 1 to 12, 2000
More
Every storm in New Jersey in 2000Every state in 2000This day in weather historyWarnings in New Jersey, September 2000
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: 5156752, 5156753.