Alert archive / New Jersey / Areal Flood Warnings in 2011

Areal Flood Warning 37, NWS Philadelphia/Mount Holly

August 14, 2011Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Aug 14, 2011, 11:03 PM EDT for Monmouth County, Ocean County, New Jersey. It was in force for 8 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
Aug 14, 2011, 11:03 PM EDT (03:03 UTC)
Expired
Aug 15, 2011, 7:00 AM EDT
In force
8 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 27 km from the middle of the area, began a volume at 03:03 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

Brookhaven, NY (KOKX), launched 00:00Z, 3.1 hours before the alert went out and 140 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 2011-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 117 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 2011-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
117 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

676 
WGUS41 KPHI 150303
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1103 PM EDT SUN AUG 14 2011

NJC025-029-151100-
/O.NEW.KPHI.FA.W.0037.110815T0303Z-110815T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONMOUTH NJ-OCEAN NJ-
1103 PM EDT SUN AUG 14 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  SOUTH CENTRAL MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  NORTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 700 AM EDT MONDAY

* AT 1102 PM EDT THE MANASQUAN RIVER AT SQUANKUM HAS EXCEEDED ITS 
FLOOD STAGE. ALSO...THE NORTH BRANCH OF THE METEDECONK RIVER AT 
LAKEWOOD CONTINUES TO RISE.

ADDITIONAL SHOWERS AND THUNDERSTORMS ARE POSSIBLE DURING THE 
OVERNIGHT HOURS WHICH COULD EXACERBATE FLOODING.

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.

DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE 
DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER 
AND YOU MAY DAMAGE YOUR VEHICLE...LEADING TO COSTLY REPAIRS.

LAT...LON 4020 7429 4017 7409 4005 7412 4007 7432

$$

ROBERTSON
1 follow-up statement
146 
WGUS81 KPHI 151017
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
617 AM EDT MON AUG 15 2011

NJC025-029-151100-
/O.CON.KPHI.FA.W.0037.000000T0000Z-110815T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONMOUTH NJ-OCEAN NJ-
617 AM EDT MON AUG 15 2011

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM EDT FOR URBAN
AREAS AND SMALL STREAMS IN NORTH CENTRAL OCEAN AND SOUTH CENTRAL
MONMOUTH COUNTIES...

AT 615 AM EDT WATERS WERE RECEDING ON THE MANASQUAN RIVER SQUANKUM 
AND ALONG THE NORTH BRANCH OF THE METEDECONK RIVER AT LAKEWOOD.

THESE SMALL STREAMS SHOULD ALL BE COMPLETELY WITHIN THEIR BANKS BY 7 
AM...AT WHICH TIME THIS FLOOD WARNING WILL EXPIRE.  SHOWERS 
DEVELOPING LATER THIS MORNING OR AFTERNOON MAY FORCE RENEWED RISES 
OF THESE WATERS.

HOWEVER...FOR NOW...FLOODING SHOULD HAVE AT LEAST TEMPORARILY 
ENDED BY 7 THIS MORNING.  

A FLOOD WARNING MEANS THAT FLOODING WAS REPORTED.
 
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. 

&&

LAT...LON 4020 7429 4017 7409 4005 7412 4007 7432

$$

DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 12:03 AM EDTRiver Flood WarningPHISomerset33 hr
Aug 15, 5:31 AM EDTAreal Flood WarningPHICumberland, Gloucester, Salem4 hr
Aug 15, 5:34 AM EDTAreal Flood WarningPHISomerset3 hr
Aug 15, 9:24 AM EDTAreal Flood WarningPHICumberland, Salem12 hr
Aug 15, 1:56 PM EDTSpecial Weather StatementPHIHunterdon, Warren94 min
Aug 15, 2:35 PM EDTFlash Flood WarningPHIHunterdon, Warren3 hr
Aug 15, 2:56 PM EDTSpecial Weather StatementPHIBurlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 4 more109 min
Aug 15, 3:10 PM EDTFlash Flood WarningPHIMorris, Sussex3 hr
Aug 15, 3:48 PM EDTSpecial Marine WarningPHI87 min
Aug 15, 4:15 PM EDTSpecial Weather StatementPHICape May60 min
Aug 15, 4:33 PM EDTSpecial Marine WarningPHI57 min
Aug 15, 5:08 PM EDTAreal Flood WarningPHIAtlantic4 hr
Aug 15, 5:25 PM EDTSpecial Marine WarningPHI110 min
Aug 15, 5:46 PM EDTAreal Flood WarningPHIMorris15 hr

Nearby

Areal Flood Warnings in New Jersey, 2011Every areal flood warning in 2011

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.