Flash Flood Warning 53, NWS Philadelphia/Mount Holly

Issued

Jul 14, 2023, 8:29 PM EDT (00:29 UTC)

Expired

Jul 15, 2023, 12:30 AM EDT

In force

4 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

County Morris County, NJ

The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 00:32 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.

287 
WGUS51 KPHI 150029
FFWPHI
NJC027-150430-
/O.NEW.KPHI.FF.W.0053.230715T0029Z-230715T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
829 PM EDT Fri Jul 14 2023

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northeastern Morris County in northern New Jersey...

* Until 1230 AM EDT.

* At 829 PM EDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  1 and 2 inches of rain have fallen. The expected rainfall rate is 
  0.5 to 1.5 inches in 1 hour. Additional rainfall amounts of 0.5 to 
  1.5 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...
  Dover, Hopatcong, East Hanover, Lincoln Park, Kinnelon, Boonton, 
  Butler, Wharton, Rockaway, Morris Plains, Mount Arlington, and 
  Mountain Lakes.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 26 and 48.
	Interstate 287 in New Jersey between mile markers 39 and 53.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

LAT...LON 4080 7436 4087 7475 4090 7471 4092 7465
      4097 7464 4109 7450 4108 7449 4103 7450
      4105 7445 4104 7443 4102 7443 4100 7430
      4097 7428 4093 7429 4091 7427 4090 7428
      4091 7433 4087 7434 4086 7432

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...0.5-1.5 INCHES IN 1 HOUR

$$

Staarmann

526 
WGUS71 KPHI 150118
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
918 PM EDT Fri Jul 14 2023

NJC027-150430-
/O.CON.KPHI.FF.W.0053.000000T0000Z-230715T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-
918 PM EDT Fri Jul 14 2023

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT SATURDAY 
FOR NORTHEASTERN MORRIS COUNTY...

At 918 PM EDT, Doppler radar and automated rain gauges indicated 
thunderstorms producing heavy rain across the warned area. Between 1 
and 3 inches of rain have fallen. The expected rainfall rate is 0.5 
inches in 1 hour. Additional rainfall amounts up to 0.5 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...
  Dover, Hopatcong, East Hanover, Lincoln Park, Kinnelon, Boonton, 
  Butler, Wharton, Rockaway, Morris Plains, Mount Arlington, and 
  Mountain Lakes.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 27 and 48.
	Interstate 287 in New Jersey between mile markers 39 and 53.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles. Be especially cautious at night when 
it is harder to recognize the dangers of flooding.

&&

LAT...LON 4080 7436 4087 7475 4090 7471 4092 7465
      4097 7464 4109 7450 4108 7449 4103 7450
      4105 7445 4104 7443 4102 7443 4100 7430
      4097 7428 4093 7429 4091 7427 4090 7428
      4091 7433 4087 7434 4086 7432

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...0.5 INCHES IN 1 HOUR

$$

Staarmann

991 
WGUS71 KPHI 150421
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1221 AM EDT Sat Jul 15 2023

NJC027-150431-
/O.EXP.KPHI.FF.W.0053.000000T0000Z-230715T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-
1221 AM EDT Sat Jul 15 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 1230 AM EDT EARLY THIS MORNING 
FOR NORTHEASTERN MORRIS COUNTY...

The heavy rain has ended and no additional flooding is expected to 
pose a threat. However, it may take time for all the runoff to 
recede. Please continue to heed any road closures.

LAT...LON 4080 7436 4087 7475 4090 7471 4092 7465
      4097 7464 4109 7450 4108 7449 4103 7450
      4105 7445 4104 7443 4102 7443 4100 7430
      4097 7428 4093 7429 4091 7427 4090 7428
      4091 7433 4087 7434 4086 7432

$$

SFJ

Flash Flood Warnings in New Jersey, 2023Every flash flood warning in 2023

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.