Alert archive / New Jersey / Flash Flood Warnings in 2016

Flash Flood Warning 21, NWS Philadelphia/Mount Holly

July 16, 2016Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 16, 2016, 8:14 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 4 hr. 8 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
Jul 16, 2016, 8:14 PM EDT (00:14 UTC)
Expired
Jul 17, 2016, 12:15 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

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

The radar

The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 00:18 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
Jul 16, 8:24 PM EDTFLASH FLOODLawnside, NJWATER RESCUE OF DRIVER TRAPPED IN CAR.
Jul 16, 8:26 PM EDTHEAVY RAIN 2.5Sicklerville, NJ
Jul 16, 8:58 PM EDTHEAVY RAIN 2.12 S Turnersville, NJ
Jul 16, 9:00 PM EDTHEAVY RAIN 2.1Medford, NJ
Jul 16, 9:01 PM EDTHEAVY RAIN 2.082 Ssw Springdale, NJ
Jul 16, 9:03 PM EDTHEAVY RAIN 2.25 E Greentree Village, NJ
Jul 16, 9:15 PM EDTHEAVY RAIN 2.37Washington Twp, NJ
Jul 16, 9:55 PM EDTHEAVY RAIN 3.79Atco, NJ

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.2 hours before the alert went out and 207 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, Brookhaven, NY at 00:00Z on 2016-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 525 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2016-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 square meters per square second.19395878Sfc1 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
525 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1198 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
-29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

785 
WGUS51 KPHI 170014
FFWPHI
NJC005-007-015-170415-
/O.NEW.KPHI.FF.W.0021.160717T0014Z-160717T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
814 PM EDT SAT JUL 16 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  NORTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  WEST CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1215 AM EDT
    
* AT 813 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EVESHAM...DEPTFORD...VOORHEES...MEDFORD...LINDENWOLD...BELLMAWR...
  WOODBURY...BERLIN...MAGNOLIA...WOODBURY HEIGHTS...CHESILHURST...
  TURNERSVILLE...MARLTON LAKES...SPRINGDALE...ECHELON...
  SICKLERVILLE...WILLIAMSTOWN...ATCO...ASHLAND AND MARLTON.

ADDITIONAL RAINFALL AMOUNTS OF AROUND ONE INCH IS POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3993 7481 3976 7470 3963 7492 3983 7519

$$

SFJ
3 follow-up statements
060 
WGUS71 KPHI 170118
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
918 PM EDT SAT JUL 16 2016

NJC005-007-015-170415-
/O.CON.KPHI.FF.W.0021.000000T0000Z-160717T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-BURLINGTON NJ-
918 PM EDT SAT JUL 16 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
CAMDEN...NORTHEASTERN GLOUCESTER AND WEST CENTRAL BURLINGTON
COUNTIES...

AT 917 PM EDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO FOUR INCHES OF
RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EVESHAM...DEPTFORD...VOORHEES...MEDFORD...LINDENWOLD...BELLMAWR...
WOODBURY...BERLIN...MAGNOLIA...WOODBURY HEIGHTS...CHESILHURST...
TURNERSVILLE...MARLTON LAKES...SPRINGDALE...ECHELON...SICKLERVILLE...
WILLIAMSTOWN...ATCO...ASHLAND AND MARLTON.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3993 7481 3976 7470 3963 7492 3983 7519

$$

SFJ
456 
WGUS71 KPHI 170225
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1025 PM EDT SAT JUL 16 2016

NJC005-007-015-170415-
/O.CON.KPHI.FF.W.0021.000000T0000Z-160717T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-BURLINGTON NJ-
1025 PM EDT SAT JUL 16 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
CAMDEN...NORTHEASTERN GLOUCESTER AND WEST CENTRAL BURLINGTON
COUNTIES...

AT 1023 PM EDT...TRAINED WEATHER SPOTTERS REPORTED UP TO FOUR INCHES
OF RAIN HAS FALLEN. THOUGH THE HEAVIEST RAIN HAS MOVED OUT OF THE
WARNING AREA...STREAMS AND CREEKS CONTINUE TO RISE AND RUNOFF WILL
BE SLOW TO RECEDE. THUS...THE FLASH FLOOD WARNING CONTINUES.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EVESHAM...DEPTFORD...VOORHEES...MEDFORD...LINDENWOLD...BELLMAWR...
WOODBURY...BERLIN...MAGNOLIA...WOODBURY HEIGHTS...CHESILHURST...
TURNERSVILLE...MARLTON LAKES...SPRINGDALE...ECHELON...SICKLERVILLE...
WILLIAMSTOWN...ATCO...ASHLAND AND MARLTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 3993 7481 3976 7470 3963 7492 3983 7519

$$

SFJ
761 
WGUS71 KPHI 170410
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1210 AM EDT SUN JUL 17 2016

NJC005-007-015-170418-
/O.EXP.KPHI.FF.W.0021.000000T0000Z-160717T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-BURLINGTON NJ-
1210 AM EDT SUN JUL 17 2016

...THE FLASH FLOOD WARNING FOR CAMDEN...NORTHEASTERN GLOUCESTER AND
WEST CENTRAL BURLINGTON COUNTIES WILL EXPIRE AT 1215 AM EDT...

FLOOD WATERS CONTINUE TO RECEDE. FLOODING IS NO LONGER EXPECTED TO
POSE A THREAT. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES.

LAT...LON 3993 7481 3976 7470 3963 7492 3983 7519

$$

LF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 8:18 PM EDTSpecial Weather StatementPHIMorris27 min
Jul 16, 8:21 PM EDTSpecial Marine WarningPHI54 min
Jul 16, 8:23 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland, Gloucester, Ocean and 1 more4 hr
Jul 16, 8:43 PM EDTSpecial Weather StatementPHIGloucester, Salem32 min
Jul 16, 8:56 PM EDTAreal Flood AdvisoryPHICumberland, Gloucester, Salem4 hr
Jul 16, 9:51 PM EDTSpecial Weather StatementPHIAtlantic24 min
Jul 16, 10:23 PM EDTSpecial Weather StatementPHIAtlantic22 min
Jul 16, 10:40 PM EDTFlash Flood WarningPHIAtlantic, Burlington4 hr

Nearby

Flash Flood Warnings in New Jersey, 2016Every flash flood warning in 2016

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.