Alert archive / New Jersey / Flash Flood Warnings in 2016

Flash Flood Warning 18, NWS Philadelphia/Mount Holly

July 8, 2016Atlantic County, Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 8, 2016, 8:12 PM EDT for Atlantic County, Burlington County, New Jersey. It was in force for 4 hr. 3 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 8, 2016, 8:12 PM EDT (00:12 UTC)
Expired
Jul 9, 2016, 12:15 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Atlantic County, NJ, Burlington County, NJ

The radar

The Philadelphia radar (KDIX), 41 km from the middle of the area, began a volume at 00:14 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 8, 8:30 PM EDTFLASH FLOODEgg Harbor City, NJSOME ROADS QUICKLY FLOODED...WITH THE WATER SEVERAL INCHES DEEP IN PLACES. TIME ESTIMATED.
Jul 8, 9:00 PM EDTHEAVY RAIN 2.72Mullica Twp, NJ
Jul 8, 9:59 PM EDTHEAVY RAIN 3.47Atlantic City Intl Airp, NJ

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

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.2 hours before the alert went out and 200 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 00:00Z on 2016-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1028 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, Wallops Is Stn, VA at 00:00Z on 2016-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
1028 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1323 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

701 
WGUS51 KPHI 090012
FFWPHI
NJC001-005-090415-
/O.NEW.KPHI.FF.W.0018.160709T0012Z-160709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
812 PM EDT FRI JUL 8 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1215 AM EDT
    
* AT 811 PM EDT...DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS
  PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF
  RAIN HAVE ALREADY FALLEN. UP TO FOUR INCHES IS POSSIBLE. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ATLANTIC CITY...PLEASANTVILLE...HAMMONTON...ABSECON...
  EGG HARBOR CITY...WEYMOUTH...ESTELL MANOR...PORT REPUBLIC...
  WADING RIVER...ELWOOD-MAGNOLIA...BATSTO...MAYS LANDING...
  WHARTON STATE FOREST...POMONA AND FOLSOM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3974 7446 3940 7447 3940 7481 3966 7481
      3966 7467 3974 7467

$$

KRUZDLO
2 follow-up statements
434 
WGUS71 KPHI 090150
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
950 PM EDT FRI JUL 8 2016

NJC001-005-090415-
/O.CON.KPHI.FF.W.0018.000000T0000Z-160709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATLANTIC NJ-BURLINGTON NJ-
950 PM EDT FRI JUL 8 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR
CENTRAL ATLANTIC AND SOUTHEASTERN BURLINGTON COUNTIES...

AT 948 PM EDT...DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH
PRODUCED THE HEAVY RAIN HAVE MOVED OUT OF THE WARNED AREA. UP TO
FOUR INCHES OF RAIN HAVE FALLEN THIS EVENING. 

THE FLASH FLOODING WARNING WILL REMAIN IN EFFECT UNTIL THE
ASSOCIATED RUNOFF SUBSIDES.


LAT...LON 3974 7446 3940 7447 3940 7481 3966 7481
      3966 7467 3974 7467

$$

KRUZDLO
231 
WGUS71 KPHI 090308
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1108 PM EDT FRI JUL 8 2016

NJC001-005-090318-
/O.CAN.KPHI.FF.W.0018.000000T0000Z-160709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATLANTIC NJ-BURLINGTON NJ-
1108 PM EDT FRI JUL 8 2016

...THE FLASH FLOOD WARNING FOR CENTRAL ATLANTIC AND SOUTHEASTERN
BURLINGTON COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.

LAT...LON 3974 7446 3940 7447 3940 7481 3966 7481
      3966 7467 3974 7467

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 3:55 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem50 min
Jul 9, 4:08 PM EDTSpecial Marine WarningPHI67 min
Jul 9, 4:15 PM EDTAreal Flood AdvisoryPHIGloucester, Salem4 hr
Jul 9, 4:47 PM EDTSpecial Weather StatementPHISalem43 min
Jul 9, 6:11 PM EDTSpecial Weather StatementPHISalem34 min
Jul 9, 6:31 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland, Salem44 min
Jul 9, 6:33 PM EDTSpecial Marine WarningPHI57 min
Jul 9, 6:43 PM EDTAreal Flood AdvisoryPHICumberland, Salem4 hr
Jul 9, 7:07 PM EDTSpecial Marine WarningPHI53 min
Jul 9, 7:07 PM EDTSevere Thunderstorm WarningPHICape May, Cumberland33 min
Jul 9, 7:33 PM EDTSpecial Weather StatementPHIWarren57 min

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.