NWS Mount Holly NJFF.W 0156September 13, 2026
Flash Flood Warning: Mercer, Middlesex, Bucks and 3 more, NJ and PA
The National Weather Service office in Mount Holly issued a flash flood warning for Mercer, Middlesex, Bucks and 3 more in New Jersey, Pennsylvania, which was in force until 12:00 p.m. local time on September 13. It was the 156th flash flood warning the NWS office in Mount Holly issued in 2026. New Jersey had 11 flash flood warnings in September 2026, against 5 in an average September of 2008-2025 (New Jersey's flash flood warnings by year).
ExpiredWarning
In force for 3.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Mount Holly NJ
- Area
- Mercer, Middlesex, Bucks and 3 more
- State
- New Jersey
- Level
- Warning
- Issued
- 8:06 a.m. EDT, September 13, 2026
- Expires
- 12:00 p.m. EDT, September 13, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KPHI FF.W 0156
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWPHI The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Central Mercer County in central New Jersey... Southwestern Middlesex County in northern New Jersey... Southeastern Bucks County in southeastern Pennsylvania... Delaware County in southeastern Pennsylvania... Southeastern Montgomery County in southeastern Pennsylvania... Philadelphia County in southeastern Pennsylvania... * Until noon EDT. * At 806 AM EDT, Doppler radar indicated heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen across much of the warned area. The expected rainfall rate is 0.5 to 1.5 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Philadelphia, Trenton, Bensalem, Ewing, Chester, Princeton, Yeadon, Folcroft, Swarthmore, Hightstown and Jenkintown.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.