Flash Flood Warning 15, NWS Philadelphia/Mount Holly

Issued

Jul 12, 2021, 2:37 PM EDT (18:37 UTC)

Expired

Jul 12, 2021, 4:10 PM EDT

In force

93 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ

The Philadelphia radar (KDIX), 34 km from the middle of the area, began a volume at 18:36 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.

579 
WGUS51 KPHI 121837
FFWPHI
NJC021-023-025-122245-
/O.NEW.KPHI.FF.W.0015.210712T1837Z-210712T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
237 PM EDT Mon Jul 12 2021

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Southeastern Mercer County in central New Jersey...
  Southwestern Monmouth County in central New Jersey...
  South Central Middlesex County in northern New Jersey...

* Until 645 PM EDT.

* At 237 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.5 and 1 inch of rain 
  has fallen. Additional rainfall amounts of 2 to 3 inches 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...
  Trenton, Manalapan, Ewing, Jamesburg, Hightstown, Cranbury, 
  Allentown, Roosevelt, Windsor, Twin Rivers, Imlaystown, and 
  Edinburg.

This includes the following highways...
	New Jersey Turnpike between exits 8 and 8A.
	Interstate 295 in New Jersey between mile markers 58 and 66.
	Interstate 195 in New Jersey between mile markers 0 and 15.

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.

&&

LAT...LON 4023 7479 4035 7444 4022 7431 4012 7458
      4014 7459 4014 7462 4015 7462 4017 7468
      4018 7470 4018 7471 4017 7471 4017 7470
      4015 7472 4016 7472 4017 7473 4019 7475
      4022 7477

FLASH FLOOD...RADAR INDICATED

$$

Iovino

350 
WGUS71 KPHI 122010
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
410 PM EDT Mon Jul 12 2021

NJC021-023-025-122020-
/O.CAN.KPHI.FF.W.0015.000000T0000Z-210712T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mercer NJ-Middlesex NJ-Monmouth NJ-
410 PM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN MERCER, 
SOUTHWESTERN MONMOUTH, AND SOUTH CENTRAL MIDDLESEX COUNTIES...

Rainfall rates have decreased and the potential for flash flooding 
has diminished.  However, a Flood Advisory remains in effect until 
5:00 PM.

LAT...LON 4023 7479 4035 7444 4022 7431 4012 7458
      4014 7459 4014 7462 4015 7462 4017 7468
      4018 7470 4018 7471 4017 7471 4017 7470
      4015 7472 4016 7472 4017 7473 4019 7475
      4022 7477

$$

Iovino

Flash 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.