Flash Flood Warning 26, NWS Philadelphia/Mount Holly

Issued

Jul 29, 2021, 5:32 PM EDT (21:32 UTC)

Expired

Jul 29, 2021, 7:47 PM EDT

In force

2 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Warren County, NJ, Northampton County, PA

The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 21:36 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.

724 
WGUS51 KPHI 292132
FFWPHI
NJC041-PAC095-300145-
/O.NEW.KPHI.FF.W.0026.210729T2132Z-210730T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
532 PM EDT Thu Jul 29 2021

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northern Warren County in northwestern New Jersey...
  Northeastern Northampton County in eastern Pennsylvania...

* Until 945 PM EDT.

* At 532 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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 will experience flash flooding include...
  Hackettstown, Blairstown, Belvidere, Hope, Delaware Water Gap, 
  Columbia, Great Meadows-Vienna, Allamuchy-Panther Valley, and 
  Portland.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 1 and 18.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4097 7512 4097 7513 4099 7513 4105 7492
      4101 7488 4086 7481 4082 7515 4095 7516
      4096 7513

FLASH FLOOD...RADAR INDICATED

$$

MPS

108 
WGUS71 KPHI 292347
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
747 PM EDT Thu Jul 29 2021

NJC041-PAC095-292357-
/O.CAN.KPHI.FF.W.0026.000000T0000Z-210730T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Northampton PA-
747 PM EDT Thu Jul 29 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN WARREN AND 
NORTHEASTERN NORTHAMPTON COUNTIES...

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

LAT...LON 4097 7512 4097 7513 4099 7513 4105 7492
      4101 7488 4086 7481 4082 7515 4095 7516
      4096 7513

$$

MPS

Flash Flood Warnings in Pennsylvania, 2021Flash Flood Warnings in New Jersey, 2021Every flash flood warning in 2021

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.