Alert archive / New Jersey / Flash Flood Warnings in 2012

Flash Flood Warning 34, NWS Philadelphia/Mount Holly

August 14, 2012Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 14, 2012, 3:46 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 2 hr. 1 report 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
Aug 14, 2012, 3:46 PM EDT (19:46 UTC)
Expired
Aug 14, 2012, 6:04 PM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 19:47 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.

What was reported inside it

TimeReportWhereRemark
Aug 14, 4:15 PM EDTFLASH FLOODGalloway Twp, NJA STRETCH OF THE GARDEN STATE PARKWAY AND NUMEROUS SECONDARY ROADS FLOODED AROUND GALLOWAY TWP.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.8 hours before the alert went out and 149 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1166 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 258 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
1166 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
258 m²/s²
0-3 km storm-relative helicity
256 m²/s²
Significant tornado parameter
1.2
Supercell composite
7.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

895 
WGUS51 KPHI 141946
FFWPHI
NJC001-005-029-142245-
/O.NEW.KPHI.FF.W.0034.120814T1946Z-120814T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
346 PM EDT TUE AUG 14 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN BURLINGTON COUNTY...
  EAST CENTRAL ATLANTIC COUNTY...
  SOUTH CENTRAL OCEAN COUNTY...

* UNTIL 645 PM EDT...

* AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER EAST CENTRAL ATLANTIC...
  EXTREME SOUTHEASTERN BURLINGTON AND SOUTH CENTRAL OCEAN COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
  OF EAST CENTRAL ATLANTIC...EXTREME SOUTHEASTERN BURLINGTON AND
  SOUTH CENTRAL OCEAN COUNTIES.

TWO TO FOUR INCHES OF RAIN HAVE ALREADY FALLEN ACROSS PORTIONS OF 
THE WARNED AREA. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES 
ARE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!

PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.

&&

LAT...LON 3959 7429 3959 7431 3957 7431 3953 7435
      3953 7440 3949 7439 3941 7447 3945 7458
      3968 7440 3962 7427

$$

KRUZDLO
2 follow-up statements
747 
WGUS71 KPHI 142119
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
519 PM EDT TUE AUG 14 2012

NJC001-005-029-142245-
/O.CON.KPHI.FF.W.0034.000000T0000Z-120814T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLINGTON NJ-ATLANTIC NJ-OCEAN NJ-
519 PM EDT TUE AUG 14 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR SOUTH
CENTRAL OCEAN...EAST CENTRAL ATLANTIC AND SOUTHEASTERN BURLINGTON
COUNTIES...

AT 512 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING 
WAS STILL ONGOING, BUT RECEDING.

FLOODING ALONG THE GARDEN STATE PARKWAY WAS REPORTED ALONG WITH 
SECONDARY ROADS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.

&&

LAT...LON 3959 7429 3959 7431 3957 7431 3953 7435
      3953 7440 3949 7439 3941 7447 3945 7458
      3968 7440 3962 7427

$$

KRUZDLO
313 
WGUS71 KPHI 142204
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
604 PM EDT TUE AUG 14 2012

NJC001-005-029-142215-
/O.CAN.KPHI.FF.W.0034.000000T0000Z-120814T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BURLINGTON NJ-ATLANTIC NJ-OCEAN NJ-
604 PM EDT TUE AUG 14 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL
OCEAN...EAST CENTRAL ATLANTIC AND SOUTHEASTERN BURLINGTON COUNTIES...

THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 3959 7429 3959 7431 3957 7431 3953 7435
      3953 7440 3949 7439 3941 7447 3945 7458
      3968 7440 3962 7427

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 9:22 AM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem38 min
Aug 14, 9:44 AM EDTSpecial Weather StatementPHIHunterdon, Mercer91 min
Aug 14, 10:07 AM EDTSpecial Weather StatementPHICamden, Gloucester, Salem83 min
Aug 14, 11:42 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Gloucester3 hr
Aug 14, 2:35 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Ocean78 min

Nearby

Flash Flood Warnings in New Jersey, 2012Every flash flood warning in 2012

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.