Flash Flood Warning 112, NWS Philadelphia/Mount Holly

Issued

Aug 7, 2026, 5:01 PM EDT (21:01 UTC)

Expired

Aug 7, 2026, 8:00 PM EDT

In force

3 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA

The Philadelphia radar (KDIX), 92 km from the middle of the area, began a volume at 21:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

513 
WGUS51 KPHI 072101
FFWPHI
NJC019-041-PAC017-077-095-080000-
/O.NEW.KPHI.FF.W.0112.260807T2101Z-260808T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
501 PM EDT Fri Aug 7 2026

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Central Hunterdon County in northwestern New Jersey...
  Southwestern Warren County in northwestern New Jersey...
  East Central Lehigh County in eastern Pennsylvania...
  Southeastern Northampton County in eastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...

* Until 800 PM EDT.

* At 501 PM EDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  0.5 and 1.5 inches of rain have fallen. The expected rainfall rate 
  is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is ongoing 
  or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets, and underpasses as well as other
           drainage and low lying areas.

* Some locations that may experience flash flooding include...
  Bethlehem, Quakertown, Perkasie, Byram, Bedminster, Hellertown, 
  Tinicum, High Bridge, Clinton, Alpha, Dublin and Glen Gardner.

This includes the following highways...
	Interstate 78 in New Jersey between mile markers 0 and 21.
	Interstate 78 in Pennsylvania between mile markers 61 and 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 4056 7545 4068 7518 4072 7507 4075 7485
      4065 7482 4040 7497 4035 7500 4035 7529
      4049 7540

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

Cooper

256 
WGUS71 KPHI 072356
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
756 PM EDT Fri Aug 7 2026

NJC019-041-PAC017-077-095-080006-
/O.EXP.KPHI.FF.W.0112.000000T0000Z-260808T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Warren NJ-Bucks PA-Lehigh PA-Northampton PA-
756 PM EDT Fri Aug 7 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR 
CENTRAL HUNTERDON, SOUTHWESTERN WARREN, EAST CENTRAL LEHIGH, 
SOUTHEASTERN NORTHAMPTON AND NORTHWESTERN BUCKS COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

&&

LAT...LON 4056 7545 4068 7518 4072 7507 4075 7485
      4065 7482 4040 7497 4035 7500 4035 7529
      4049 7540

$$

Cooper

Flash Flood Warnings in Pennsylvania, 2026Flash Flood Warnings in New Jersey, 2026Every flash flood warning in 2026

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.