Alert archive / New Jersey / Areal Flood Warnings in 2011

Areal Flood Warning 101, NWS Philadelphia/Mount Holly

September 28, 2011Hunterdon County, Morris County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 28, 2011, 4:49 AM EDT for Hunterdon County, Morris County, Warren County, New Jersey. It was in force for 7 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
Sep 28, 2011, 4:49 AM EDT (08:49 UTC)
Expired
Sep 28, 2011, 11:45 AM EDT
In force
7 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Hunterdon County, NJ, Morris County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 97 km from the middle of the area, began a volume at 08:50 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
Sep 28, 6:10 AM EDTFLOODClinton, NJFLOODING ALONG MANY SMALL STREAMS THROUGHOUT THE COUNTY.
Sep 28, 7:00 AM EDTFLOODGlen Gardner, NJFLOODING ALONG SMALL STREAMS.
Sep 28, 8:30 AM EDTFLOODLebanon Twp, NJFLOODING ALONG HOFFMANS CROSSING ROAD.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 8.8 hours before the alert went out and 168 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 2011-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 2011-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 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
10 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
500 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
43 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.

200 
WGUS41 KPHI 280849
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
449 AM EDT WED SEP 28 2011

NJC019-027-041-281245-
/O.NEW.KPHI.FA.W.0101.110928T0849Z-110928T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MORRIS NJ-HUNTERDON NJ-
449 AM EDT WED SEP 28 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR SMALL STREAMS IN...
  SOUTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHWESTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 845 AM EDT

* AT 449 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN 
AREA OF HEAVY SHOWERS MOVING THROUGH PARTS OF HUNTERDON AND WARREN 
COUNTIES. RADAR ESTIMATES OF NEARLY AN INCH OF RAIN HAVE FALLEN OVER 
THE PAST HOUR. SMALL CREEKS AND STREAMS ARE EXPERIENCING RAPID WATER 
LEVEL RISES. ALTHOUGH RAINFALL WILL CONTINUE TO DIMINISH ACROSS THE 
AREA, STREAMS WILL CONTINUE TO RISE OVER THE NEXT COUPLE OF HOURS.

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...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER ON COUNTRY ROADS AND
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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 4090 7468 4076 7467 4072 7469 4071 7473
      4068 7473 4067 7472 4066 7474 4062 7471
      4056 7473 4057 7516 4078 7511 4082 7509
      4084 7510 4086 7505 4091 7508

$$

HEAVENER
2 follow-up statements
823 
WGUS81 KPHI 281019
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
619 AM EDT WED SEP 28 2011

NJC019-027-041-281245-
/O.CON.KPHI.FA.W.0101.000000T0000Z-110928T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MORRIS NJ-HUNTERDON NJ-
619 AM EDT WED SEP 28 2011

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 845 AM EDT FOR SMALL
STREAMS IN NORTHERN HUNTERDON...SOUTHWESTERN MORRIS AND SOUTHERN
WARREN COUNTIES...

AT 613 AM EDT HUNTERDON COUNTY OFFICIALS REPORTED WIDESPREAD STREET 
FLOODING IN CLINTON...FRANKLIN TOWNSHIP AND STANTON. 

THE SOUTH BRANCH OF THE RARITAN AND THE SPRUCE RUN AT GLEN GARDNER 
ARE EXPECTED TO EXCEED FLOOD STAGE THIS MORNING.    

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 ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.

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 4090 7468 4076 7467 4072 7469 4071 7473
      4068 7473 4067 7472 4066 7474 4062 7471
      4056 7473 4057 7516 4078 7511 4082 7509
      4084 7510 4086 7505 4091 7508

$$
DRAG/HEAVENER
918 
WGUS41 KPHI 281232
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
832 AM EDT WED SEP 28 2011

NJC019-027-041-281545-
/O.EXT.KPHI.FA.W.0101.000000T0000Z-110928T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-MORRIS NJ-HUNTERDON NJ-
832 AM EDT WED SEP 28 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLOOD WARNING FOR SMALL STREAMS IN...
  SOUTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHWESTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 1145 AM EDT

* AT 829 AM EDT...ALTHOUGH THE RAIN HAS MOVED TO THE NORTH, CREEKS, 
STREAMS, AND RIVERS CONTINUE TO RESPOND. WATER LEVELS ALONG THE 
SOUTH BRANCH RARITAN RIVER CONTINUE TO RISE AT HIGH BRIDGE AND FOUR 
BRIDGES. THE PEQUEST RIVER IS ALSO RISING AS IS SPRUCE RUN AT GLEN 
GARDNER. 

THE FLOOD WARNING HAS BEEN EXTENDED. 

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.

&&

LAT...LON 4090 7468 4076 7467 4072 7469 4071 7473
      4068 7473 4067 7472 4066 7474 4062 7471
      4056 7473 4057 7516 4078 7511 4082 7509
      4084 7510 4086 7505 4091 7508

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 27, 11:53 PM EDTCoastal Flood StatementPHIBurlington, Camden, Gloucester, Salem4 hr
Sep 28, 1:54 AM EDTSpecial Weather StatementPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Morris and 4 more51 min
Sep 28, 3:56 AM EDTFlash Flood WatchPHIHunterdon, Morris, Somerset, Sussex, Warren39 hr
Sep 28, 4:09 AM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset, Warren51 min
Sep 28, 4:10 AM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more7 hr
Sep 28, 5:45 AM EDTRiver Flood WarningPHIHunterdon, Somerset22 hr
Sep 28, 6:29 AM EDTFlash Flood WarningPHISussex, Warren7 hr
Sep 28, 9:17 AM EDTSpecial Weather StatementPHISussex58 min
Sep 28, 10:02 AM EDTCoastal Flood StatementPHIBurlington, Camden, Gloucester, Salem8 hr
Sep 28, 12:00 PM EDTAreal Flood WarningPHIHunterdon, Morris, Somerset, Warren6 hr
Sep 28, 3:29 PM EDTCoastal Flood StatementPHIAtlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean9 hr
Sep 28, 5:58 PM EDTAreal Flood WarningPHIHunterdon, Morris, Somerset, Sussex, Warren26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.