Flash Flood, Mercer
- When
- May 24, 5:00 PM EST to 6:00 PM EST
- Where
- Mercer County, Central Portion
- Injuries
- 1 direct, 0 indirect
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 40.283, -74.702 (the zone’s center; the record gives no point)
Flash Flood in New Jersey, May 24, 1999
A series of three thunderstorms brought too much heavy rain for area streams and rivers to handle. m.
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
The toll
- Deaths
- 0
- Injuries
- 1
- Property damage
- None recorded
- 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.
A series of three thunderstorms brought too much heavy rain for area streams and rivers to handle. During the last thunderstorm at around 6 p.m. EDT, streams started to flood. The Assunpink Creek in Trenton, reached its 7 foot flood stage at 6 p.m. EDT, crested at 7.04 feet at 615 p.m. EDT and was back within bankfull at 7 p.m. EDT. Storm totals averaged between 2 and 3 inches and in addition to the stream flooding, caused considerable highway and poor drainage flooding. One person was injured in Trenton when Murray Street partially collapsed. The road was under renovation, part of it was eroded by the runoff and the vehicle's front tire became stuck in an eroded ditch. Storm totals included 2.56 inches in Trenton, 2.45 inches in Hightstown and 2.06 inches in West Windsor Township.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 flash flood. Local standard time, as filed.
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
- Hail and Damaging Winds in New Mexico, May 24, 1999
- Damaging Winds in Pennsylvania, May 24, 1999
- Damaging Winds in Maryland, May 24, 1999
- Hail and Lightning Strikes in Colorado, May 24, 1999
- Damaging Wind in Texas, May 24, 1999
- Hail and Damaging Winds in Virginia, May 24, 1999
- Lightning Strike in Maryland, May 24, 1999
- Damaging Wind in New Mexico, May 24, 1999
- Damaging Winds in Pennsylvania, May 24, 1999
- Hail and Damaging Wind in Maryland, May 24, 1999
- Flash Flood and Hail in Texas, May 24, 1999
- Damaging Wind in Pennsylvania, May 24, 1999
More
Every storm in New Jersey in 1999Every state in 1999This day in weather historyWarnings in New Jersey, May 1999
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: 5699506.