Alert archive / New Jersey / Areal Flood Warnings in 2012

Areal Flood Warning 11, NWS Philadelphia/Mount Holly

June 12, 20124 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Jun 12, 2012, 11:01 PM EDT for 4 counties in New Jersey. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 12, 2012, 11:01 PM EDT (03:01 UTC)
Expired
Jun 13, 2012, 5:00 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Atlantic County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 03:04 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.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.0 hours before the alert went out and 182 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 2012-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 2012-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
15 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
681 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

013 
WGUS41 KPHI 130301
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1101 PM EDT TUE JUN 12 2012

NJC001-011-015-033-130900-
/O.NEW.KPHI.FA.W.0011.120613T0301Z-120613T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-ATLANTIC NJ-SALEM NJ-CUMBERLAND NJ-
1101 PM EDT TUE JUN 12 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  WESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
  NORTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 500 AM EDT WEDNESDAY

* AT 1058 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  AN AREA OF HEAVY RAIN MOVING ACROSS PORTIONS OF SOUTHERN NEW 
  JERSEY. BETWEEN ONE AND ONE-HALF AND THREE INCHES OF RAIN HAS 
  FALLEN IN THE AREA FROM AN EARLIER BATCH OF HEAVY RAIN. AN 
  ADDITIONAL INCH OR SO OF RAIN WILL RESULT IN FLOODING OF CREEKS 
  AND STREAMS...AS WELL AS ROAD FLOODING. THE MAURICE RIVER AT NORMA 
  IS RISING QUICKLY AND COULD GO ABOVE FLOOD STAGE EARLY WEDNESDAY 
  MORNING.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

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.

&&

LAT...LON 3937 7468 3938 7534 3962 7534 3962 7489
      3961 7488 3962 7486 3961 7469

$$

HAYES
2 follow-up statements
211 
WGUS81 KPHI 130440
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1240 AM EDT WED JUN 13 2012

NJC001-011-015-033-130900-
/O.CON.KPHI.FA.W.0011.000000T0000Z-120613T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-ATLANTIC NJ-SALEM NJ-CUMBERLAND NJ-
1240 AM EDT WED JUN 13 2012

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM EDT FOR URBAN
AREAS AND SMALL STREAMS IN NORTHERN CUMBERLAND...SOUTHEASTERN
SALEM...WESTERN ATLANTIC AND SOUTHEASTERN GLOUCESTER COUNTIES...

AT 1239 AM EDT...THE HEAVIEST RAIN HAS EXITED THE WARNING AREA. 
HOWEVER...RUNOFF FROM THE HEAVY RAIN LATE TUESDAY EVENING AND EARLY 
THIS MORNING CONTINUES TO ENTER CREEKS AND STREAMS...RESULTING IN 
SHARP RISES. THE RUNOFF COULD PUSH SOME OF THE CREEKS AND STREAMS 
ABOVE FLOOD STAGE EARLY THIS MORNING.
 
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

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.

&&

LAT...LON 3937 7468 3938 7534 3962 7534 3962 7489
      3961 7488 3962 7486 3961 7469

$$

HAYES
111 
WGUS81 KPHI 130801
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 AM EDT WED JUN 13 2012

NJC001-011-015-033-130900-
/O.CON.KPHI.FA.W.0011.000000T0000Z-120613T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-ATLANTIC NJ-SALEM NJ-CUMBERLAND NJ-
401 AM EDT WED JUN 13 2012

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 500 AM EDT FOR URBAN
AREAS AND SMALL STREAMS IN NORTHERN CUMBERLAND...SOUTHEASTERN
SALEM...WESTERN ATLANTIC AND SOUTHEASTERN GLOUCESTER COUNTIES...

WHILE THE VERY HEAVY RAIN HAS ENDED...THERE MAY STILL BE SOME 
FLOODING NEAR SMALL STREAMS AND IN POOR DRAINAGE AREAS ALONG SOME OF 
THE AREA ROADS.  

NO LARGER STREAMS HAVE FLOODED. THE COHANSEY RIVER WAS STILL 
RISING.

THERE HAVE EARLIER REPORTS OF FLOODING NEAR NORMA.  

THIS WILL PROBABLY BE THE LAST STATEMENT ON THIS AREAL FLOOD 
WARNING. 

THE FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN 
PREVIOUSLY REPORTED. STREAM RISES WILL BE SLOW AND FLASH FLOODING IS 
NOT EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLOODING IS OBSERVED MOVE TO HIGHER GROUND 
TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING 
WHEN WATER BEGINS RISING.

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.

&&

LAT...LON 3937 7468 3938 7534 3962 7534 3962 7489
      3961 7488 3962 7486 3961 7469

$$


DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 9:26 PM EDTAreal Flood AdvisoryPHIAtlantic, Cumberland, Gloucester, Salem97 min
Jun 12, 10:17 PM EDTAreal Flood AdvisoryPHICamden, Gloucester, Salem106 min
Jun 12, 10:18 PM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset, Sussex, Warren117 min
Jun 12, 10:29 PM EDTSpecial Weather StatementPHICape May, Cumberland61 min
Jun 12, 10:54 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Ocean3 hr
Jun 12, 11:06 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Somerset, Sussex104 min
Jun 13, 12:13 AM EDTSpecial Weather StatementPHICape May, Cumberland62 min
Jun 13, 3:35 PM EDTRip Current StatementPHIAtlantic, Cape May, Monmouth, Ocean28 hr

Nearby

Areal Flood Warnings in New Jersey, 2012Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.