Alert archive / New Jersey / Flash Flood Warnings in 2018

Flash Flood Warning 25, NWS Philadelphia/Mount Holly

July 3, 2018Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 3, 2018, 6:58 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 3, 2018, 6:58 PM EDT (22:58 UTC)
Expired
Jul 3, 2018, 7:47 PM EDT
In force
49 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

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

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.0 hours before the alert went out and 205 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, Wallops Is Stn, VA at 12:00Z on 2018-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1744 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, Wallops Is Stn, VA at 12:00Z on 2018-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.1939Sfc1 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
1744 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

158 
WGUS51 KPHI 032258
FFWPHI
NJC005-007-015-040200-
/O.NEW.KPHI.FF.W.0025.180703T2258Z-180704T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
658 PM EDT TUE JUL 3 2018

The National Weather Service in Mount Holly NJ has issued a

* Flash Flood Warning for...
  Southern Camden County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Central Burlington County in southern New Jersey...

* Until 1000 PM EDT.

* At 656 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across portions of southern New Jersey...including 
  southern Camden County, southeastern Gloucester County...and 
  central Burlington County. Flash flooding is expected to begin 
  shortly in these areas as the heavy rain moves through. 

* Some locations that could experience flooding include...
  Medford, Glassboro, Lindenwold, Pitman, Clayton, Berlin,
  Tabernacle, Shamong, Chesilhurst, Pemberton, Franklinville,
  Sicklerville, Atsion, Leisuretowne, Atco, Williamstown, Malaga,
  Marlton Lakes, Turnersville and Monroe Township.

LAT...LON 3983 7454 3956 7505 3956 7506 3958 7507
      3972 7515 4001 7466

$$

JJM
1 follow-up statement
185 
WGUS71 KPHI 032347
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
747 PM EDT TUE JUL 3 2018

NJC005-007-015-032354-
/O.CAN.KPHI.FF.W.0025.000000T0000Z-180704T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Camden NJ-Gloucester NJ-Burlington NJ-
747 PM EDT TUE JUL 3 2018

...THE FLASH FLOOD WARNING FOR SOUTHERN CAMDEN...SOUTHEASTERN
GLOUCESTER AND CENTRAL BURLINGTON COUNTIES IS CANCELLED...

While rain continues across portions of southern New Jersey, heavy 
rain has ended and flood waters are receding. Since flooding is no 
longer considered a threat, the flash flood warning in this area has 
been cancelled. 

LAT...LON 3983 7454 3956 7505 3956 7506 3958 7507
      3972 7515 4001 7466

$$

jjm

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 2:33 PM EDTSpecial Weather StatementPHIUnion27 min
Jul 3, 2:57 PM EDTSpecial Weather StatementPHIMorris63 min
Jul 3, 3:19 PM EDTFlash Flood WarningPHIMorris3 hr
Jul 3, 3:28 PM EDTSpecial Weather StatementPHISalem62 min
Jul 3, 3:30 PM EDTSpecial Weather StatementPHIBurlington60 min
Jul 3, 3:43 PM EDTFlash Flood WarningPHIMorris2 hr
Jul 3, 4:49 PM EDTSpecial Weather StatementPHISomerset56 min
Jul 3, 4:52 PM EDTSpecial Weather StatementPHIMercer53 min
Jul 3, 4:57 PM EDTFlash Flood WarningPHIHunterdon, Somerset114 min
Jul 3, 5:24 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester4 hr
Jul 3, 5:29 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset4 hr
Jul 3, 5:45 PM EDTFlash Flood WarningPHICamden, Gloucester4 hr
Jul 3, 5:47 PM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset2 hr
Jul 3, 5:57 PM EDTSpecial Weather StatementPHIGloucester33 min
Jul 3, 6:03 PM EDTSpecial Weather StatementPHISussex57 min
Jul 3, 6:11 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester49 min
Jul 3, 6:25 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden50 min
Jul 3, 6:37 PM EDTFlash Flood WarningPHIBurlington, Camden3 hr
Jul 3, 6:46 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester44 min
Jul 3, 7:03 PM EDTSpecial Weather StatementPHIWarren57 min

Nearby

Flash Flood Warnings in New Jersey, 2018Every flash flood warning in 2018

Sources

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.