Flash Flood Warning 37, NWS Philadelphia/Mount Holly

Issued

Aug 6, 2024, 6:46 PM EDT (22:46 UTC)

Expired

Aug 6, 2024, 10:45 PM EDT

In force

4 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Morris County, NJ, Somerset County, NJ

The Philadelphia radar (KDIX), 108 km from the middle of the area, began a volume at 22:47 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

677 
WGUS51 KPHI 062246
FFWPHI
NJC027-035-070245-
/O.NEW.KPHI.FF.W.0037.240806T2246Z-240807T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
646 PM EDT Tue Aug 6 2024

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Morris County in northern New Jersey...
  North Central Somerset County in northern New Jersey...

* Until 1045 PM EDT.

* At 646 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 
  1 to 2 inches in 1 hour. 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...
  Morristown, Dover, Madison, Hopatcong, Florham Park, East Hanover, 
  Lincoln Park, Kinnelon, Chatham, Boonton, Butler and Wharton.

This includes the following highways...
	Interstate 287 in New Jersey between mile markers 29 and 53.
	Interstate 80 in New Jersey between mile markers 27 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4090 7471 4092 7465 4097 7464 4108 7450
      4108 7449 4103 7450 4105 7445 4102 7443
      4100 7430 4097 7428 4093 7429 4090 7427
      4091 7433 4087 7434 4086 7432 4076 7438
      4075 7436 4069 7443 4073 7472

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

$$

MJL

995 
WGUS71 KPHI 070236
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1036 PM EDT Tue Aug 6 2024

NJC027-035-070246-
/O.EXP.KPHI.FF.W.0037.000000T0000Z-240807T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-Somerset NJ-
1036 PM EDT Tue Aug 6 2024

...FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM EDT THIS EVENING FOR 
MORRIS AND NORTH CENTRAL SOMERSET COUNTIES...

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

A Flood Watch remains in effect until 1200 PM EDT Wednesday for 
portions of northern Delaware, New Jersey, and Pennsylvania.

&&

LAT...LON 4090 7471 4092 7465 4097 7464 4108 7450
      4108 7449 4103 7450 4105 7445 4102 7443
      4100 7430 4097 7428 4093 7429 4090 7427
      4091 7433 4087 7434 4086 7432 4076 7438
      4075 7436 4069 7443 4073 7472

$$

MPS

Flash Flood Warnings in New Jersey, 2024Every flash flood warning in 2024

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