Alert archive / New Jersey / Flash Flood Warnings in 2023

Flash Flood Warning 86, NWS Philadelphia/Mount Holly

September 10, 20234 counties in New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 10, 2023, 10:31 PM EDT for 4 counties in New Jersey. It was in force for 3 hr. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 10, 2023, 10:31 PM EDT (02:31 UTC)
Expired
Sep 11, 2023, 1:33 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 02:35 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.

What was reported inside it

TimeReportWhereRemark
Sep 10, 10:32 PM EDTFLASH FLOOD1 Wnw Mt. Ephraim, NJReport from mPING: Street/road flooding; Street/road closed; Vehicles stranded.
Sep 10, 10:35 PM EDTFLASH FLOOD1 Ne Woodlynne, NJUS Route 130 northbound was closed due to flooding.
Sep 10, 10:40 PM EDTFLASH FLOOD1 Sse Paulsboro, NJPortions of Interstate 295 under flood waters from Gibbsboro, Paulsboro, Woodbury to National Park. Time estimated.
Sep 10, 10:50 PM EDTFLASH FLOODBrooklawn, NJSome water rescues due to vehicles stuck in flood waters in Brooklawn.
Sep 10, 11:54 PM EDTRAIN 2.19Mannington Twp, NJNJWxNet station.
Sep 10, 11:55 PM EDTRAIN 2.11 Nw South Harrison Twp, NJNJWxNet station.
Sep 11, 12:08 AM EDTFLASH FLOODRunnemede, NJFlooding on Route 168 in the vicinity of the New Jersey Turnpike in Runnemede. All lanes closed and detoured.
Sep 11, 1:00 AM EDTRAIN 3.191 Nw South Harrison Twp, NJSouth Harrison NJWxNet station.
Sep 11, 1:00 AM EDTRAIN 3.34Mannington Twp, NJMannington Twp. NJWxNet station.
Sep 11, 1:10 AM EDTRAIN 1.41Logan Twp, NJLogan Twp NJWxNet station.

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.5 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2023-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1017 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2023-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1017 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
796 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

849 
WGUS51 KPHI 110231
FFWPHI
NJC005-007-015-033-110630-
/O.NEW.KPHI.FF.W.0086.230911T0231Z-230911T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1031 PM EDT Sun Sep 10 2023

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  West Central Burlington County in southern New Jersey...
  Northwestern Camden County in southern New Jersey...
  Northwestern Gloucester County in southern New Jersey...
  Northwestern Salem County in southern New Jersey...

* Until 230 AM EDT.

* At 1031 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. 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.

  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...
  Camden, Gloucester City, Deptford, West Deptford, Pennsville, 
  Bellmawr, Woodbury, Carneys Point, Palmyra, and Paulsboro.

This includes the following highways...
	New Jersey Turnpike between exits 1 and 3.
	Interstate 76 in New Jersey between mile markers 0 and 3.
	Interstate 295 in New Jersey between mile markers 0 and 30.
	Interstate 676 in New Jersey between mile markers 0 and 4.

This includes the following streams and drainages...
  Lower Delaware.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3951 7557 3956 7557 3956 7556 3958 7562
      3959 7560 3962 7562 3970 7552 3973 7553
      3971 7548 3977 7546 3984 7535 3988 7515
      3991 7513 3996 7513 4001 7505 3998 7492
      3991 7504 3987 7504 3985 7502 3945 7551

FLASH FLOOD...RADAR INDICATED

$$

Iovino
1 follow-up statement
665 
WGUS71 KPHI 110533 RRA
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
133 AM EDT Mon Sep 11 2023

NJC005-007-015-033-110543-
/O.CAN.KPHI.FF.W.0086.000000T0000Z-230911T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Salem NJ-
133 AM EDT Mon Sep 11 2023

...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL BURLINGTON, 
NORTHWESTERN CAMDEN, NORTHWESTERN GLOUCESTER, AND NORTHWESTERN SALEM 
COUNTIES...

Flood waters are receding. The heavy rain has ended. Flooding is no 
longer expected to pose a threat.

LAT...LON 3951 7557 3956 7557 3956 7556 3958 7562
      3959 7560 3962 7562 3970 7552 3973 7553
      3971 7548 3977 7546 3984 7535 3988 7515
      3991 7513 3996 7513 4001 7505 3998 7492
      3991 7504 3987 7504 3985 7502 3945 7551

$$

Iovino

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 10, 9:03 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester3 hr
Sep 10, 9:37 PM EDTFlash Flood WarningPHIBurlington, Camden4 hr
Sep 10, 10:00 PM EDTAreal Flood AdvisoryPHIGloucester, Salem3 hr
Sep 10, 10:47 PM EDTAreal Flood AdvisoryPHIMonmouth2 hr
Sep 11, 12:03 AM EDTAreal Flood AdvisoryPHIBurlington, Camden, Cumberland, Gloucester, Salem3 hr
Sep 11, 3:04 PM EDTSpecial Marine WarningPHI41 min
Sep 11, 4:26 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington82 min
Sep 11, 4:30 PM EDTSpecial Weather StatementPHIEssex30 min
Sep 11, 4:43 PM EDTAreal Flood AdvisoryPHIMorris108 min
Sep 11, 5:43 PM EDTFlash Flood WarningPHIMiddlesex3 hr
Sep 11, 6:10 PM EDTSevere Thunderstorm WarningPHIMonmouth35 min
Sep 11, 6:21 PM EDTSpecial Marine WarningPHI54 min
Sep 11, 6:47 PM EDTSpecial Weather StatementPHIMonmouth58 min
Sep 11, 7:01 PM EDTFlash Flood WarningPHIMonmouth, Ocean6 hr
Sep 11, 7:12 PM EDTSpecial Marine WarningPHI63 min

Nearby

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

Sources

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.