Alert archive / New Jersey / Areal Flood Warnings in 2012

Areal Flood Warning 17, NWS Philadelphia/Mount Holly

September 3, 2012Atlantic County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 3, 2012, 8:57 AM EDT for Atlantic County, Camden County, Gloucester County, New Jersey. It was in force for 2 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: Sep 3, 2012, 8:57 AM EDT (12:57 UTC)
Expired: Sep 3, 2012, 11:13 AM EDT
In force: 2 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Atlantic County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 45 km from the middle of the area, began a volume at 12:56 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 12:00Z, 1.0 hours before the alert went out and 198 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1340 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 627 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 85 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.

071 
WGUS41 KPHI 031257
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
857 AM EDT MON SEP 3 2012

NJC001-007-015-031545-
/O.NEW.KPHI.FA.W.0017.120903T1257Z-120903T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-
857 AM EDT MON SEP 3 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1145 AM EDT

* AT 852 AM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF
  HEAVY RAINFALL LIFTING NORTH THROUGH SOUTHEASTERN NEW JERSEY ALONG
  AND WEST OF THE GARDEN STATE PARKWAY AT MILE MARKER 25. WELL IN
  EXCESS OF AN INCH OF RAIN WILL FALL IN LOCALIZED AREAS, AND THAT
  WILL CALL SOME URBAN, POOR DRAINAGE AND SMALL STREAM FLOODING.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS 
ARE SUBJECT TO FLOODING.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

&&

LAT...LON 3930 7461 3960 7508 3986 7494 3984 7491
      3979 7491 3978 7489 3979 7484 3966 7466
      3963 7465 3961 7459 3960 7458 3956 7451

$$

MPD

1 follow-up statement

565 
WGUS81 KPHI 031513
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1113 AM EDT MON SEP 3 2012

NJC001-007-015-031523-
/O.CAN.KPHI.FA.W.0017.000000T0000Z-120903T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-
1113 AM EDT MON SEP 3 2012

...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN ATLANTIC...SOUTHEASTERN GLOUCESTER AND SOUTHEASTERN CAMDEN
COUNTIES...

LAT...LON 3930 7461 3960 7508 3986 7494 3984 7491
      3979 7491 3978 7489 3979 7484 3966 7466
      3963 7465 3961 7459 3960 7458 3956 7451

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 6:05 AM EDT	Areal Flood Advisory	PHI	Salem	3 hr
Sep 3, 8:05 AM EDT	Areal Flood Advisory	PHI	Camden, Gloucester	3 hr
Sep 3, 10:28 AM EDT	Special Weather Statement	PHI	Burlington, Camden	62 min
Sep 3, 11:14 AM EDT	Areal Flood Advisory	PHI	Burlington, Camden	2 hr
Sep 3, 3:00 PM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Mercer, Salem	49 hr
Sep 3, 3:47 PM EDT	Special Marine Warning	PHI		58 min
Sep 3, 3:50 PM EDT	Special Weather Statement	PHI	Cumberland, Salem	55 min
Sep 3, 3:58 PM EDT	Areal Flood Advisory	PHI	Salem	3 hr
Sep 3, 4:39 PM EDT	Special Weather Statement	PHI	Atlantic, Cumberland, Gloucester, Salem	66 min
Sep 3, 4:59 PM EDT	Areal Flood Advisory	PHI	Cumberland	116 min
Sep 3, 5:44 PM EDT	Special Marine Warning	PHI		31 min
Sep 3, 5:45 PM EDT	Special Weather Statement	PHI	Atlantic	60 min
Sep 3, 6:25 PM EDT	Areal Flood Advisory	PHI	Atlantic, Ocean	2 hr
Sep 3, 6:28 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May	103 min
Sep 3, 6:49 PM EDT	Small Craft Advisory	PHI		3 hr
Sep 3, 7:29 PM EDT	Areal Flood Advisory	PHI	Atlantic	115 min

Nearby

Areal Flood Warnings in New Jersey, 2012 Every 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.