Alert archive / New Jersey / Areal Flood Warnings in 2015

Areal Flood Warning 2, NWS Philadelphia/Mount Holly

January 18, 20157 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood warning at Jan 18, 2015, 3:57 PM EST for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 10 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
Jan 18, 2015, 3:57 PM EST (20:57 UTC)
Expired
Jan 19, 2015, 2:00 AM EST
In force
10 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 20:59 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 12:00Z, 9.0 hours before the alert went out and 137 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 12:00Z on 2015-01-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2015-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
375 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.

281 
WGUS41 KPHI 182057
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
357 PM EST SUN JAN 18 2015

NJC005-019-021-023-025-027-035-PAC017-190700-
/O.NEW.KPHI.FA.W.0002.150118T2057Z-150119T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-MIDDLESEX NJ-
BURLINGTON NJ-MONMOUTH NJ-
357 PM EST SUN JAN 18 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR SMALL STREAMS IN...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  EAST CENTRAL BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  WESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...

* UNTIL 200 AM EST MONDAY

* AT 354 PM EST STREAMS WERE RISING STEADILY AND WHILE THE HEAVIEST
  RAIN HAS ALREADY OCCURRED...STREAMS WILL CONTINUE RISING INTO THIS
  EVENING. STREAMS IN HUNTERDON...SOMERSET AND MIDDLESEX COUNTIES
  AND SOUTHERN MORRIS COUNTIES ARE MOST VULNERABLE. 

* THE NESHANIC IN REAVILLE IS FIRST UP FOR POSSIBLE FLOODING BY 5 PM.

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 ON COUNTRY ROADS AND
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

A FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT. MOST
FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO
CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING
WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 4004 7462 4043 7517 4089 7465 4076 7436
      4068 7445 4066 7445 4067 7440 4060 7444
      4061 7421 4056 7421 4055 7424 4049 7426
      4045 7420 4046 7418

$$
DRAG
3 follow-up statements
118 
WGUS81 KPHI 182128
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
428 PM EST SUN JAN 18 2015

NJC005-019-021-023-025-027-035-PAC017-190700-
/O.CON.KPHI.FA.W.0002.000000T0000Z-150119T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-MIDDLESEX NJ-
BURLINGTON NJ-MONMOUTH NJ-
428 PM EST SUN JAN 18 2015

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM EST MONDAY FOR
SMALL STREAMS IN WESTERN MONMOUTH...NORTH CENTRAL BURLINGTON...
MIDDLESEX...EAST CENTRAL BUCKS...SOMERSET...SOUTHERN MORRIS...MERCER
AND HUNTERDON COUNTIES...

AT 421 PM THE NESHANIC RIVER IN REAVILLE OF HUNTERDON COUNTY HAS 
RISEN OUT OF ITS BANKS AND WAS IN FLOOD.   

OTHER STREAMS IN NORTH CENTRAL NEW JERSEY WILL BE RISING THROUGH THE 
NIGHT...INCLUDING THE MILLSTONE AT GRIGGSTOWN AND BLACKWELLS 
MILLS...THE MIDDLE BROOK AT BURNT MILLS AND THE GREEN BROOK AT 
PLAINFIELD.   

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE STEADY. 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.

A FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT. MOST
FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO
CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING
WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 4004 7462 4043 7517 4089 7465 4076 7436
      4068 7445 4066 7445 4067 7440 4060 7444
      4061 7421 4056 7421 4055 7424 4049 7426
      4045 7420 4046 7418

$$

DRAG
778 
WGUS81 KPHI 190146
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
846 PM EST SUN JAN 18 2015

NJC005-019-021-023-025-027-035-PAC017-190700-
/O.CON.KPHI.FA.W.0002.000000T0000Z-150119T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-MIDDLESEX NJ-
BURLINGTON NJ-MONMOUTH NJ-
846 PM EST SUN JAN 18 2015

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM EST FOR SMALL
STREAMS IN WESTERN MONMOUTH...NORTH CENTRAL BURLINGTON...MIDDLESEX...
EAST CENTRAL BUCKS...SOMERSET...SOUTHERN MORRIS...MERCER AND
HUNTERDON COUNTIES...

AT 840 PM THERE WERE STILL SEVERAL RIVERS INCHING UP TO TOWARD FLOOD 
STAGE WITH THE NESHANIC AT REAVILLE IN HUNTERDON COUNTY NEW JERSEY 
HAVING CRESTED ABOUT A FOOT ABOVE FLOOD STAGE AT 615 PM.

THE OVERALL TREND SHOULD BE FOR RIVERS TO CREST OVERNIGHT WITH A 
GENERAL RECESSION DEVELOPING BY MORNING.

THIS WARNING MAY BE CANCELLED BY 10 PM, PENDING RECEIPT OF NEW RIVER 
STAGE DATA. 

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.

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.

A FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT. MOST 
FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS 
WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO 
CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING
WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 4004 7462 4043 7517 4089 7465 4076 7436
      4068 7445 4066 7445 4067 7440 4060 7444
      4061 7421 4056 7421 4055 7424 4049 7426
      4045 7420 4046 7418

$$
DRAG
988 
WGUS81 KPHI 190543
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1243 AM EST MON JAN 19 2015

NJC005-019-021-023-025-027-035-PAC017-190551-
/O.CAN.KPHI.FA.W.0002.000000T0000Z-150119T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-MIDDLESEX NJ-
BURLINGTON NJ-MONMOUTH NJ-
1243 AM EST MON JAN 19 2015

...THE FLOOD WARNING HAS BEEN CANCELLED FOR SMALL STREAMS IN WESTERN
MONMOUTH...NORTH CENTRAL BURLINGTON...MIDDLESEX...EAST CENTRAL
BUCKS...SOMERSET...SOUTHERN MORRIS...MERCER AND HUNTERDON COUNTIES...

ALL SMALLER GAGED CREEKS AND RIVERS HAVE RETURNED WITHIN THEIR 
BANKS. THERE IS SOME FLOODING ALONG THE MILLSTONE RIVER THAT HAS 
CLOSED CAUSEWAYS AND THE MILLSTONE RIVER AT BLACKWELLS MILLS AS WELL
AS THE NORTH BRANCH OF THE RANCOCAS CREEK ARE EXPECTED TO CREST NEAR
FLOOD STAGE LATER TODAY.

THERE ARE SEPARATE SPECIAL RIVER STATEMENTS BEING ISSUED FOR THESE
TWO FORECAST POINTS.

PLEASE BE WARY IF DRIVING THAT THERE WILL BE ICY SPOTS DEVELOPING IF 
NOT ALREADY WHERE WATER HAS PONDED FROM YESTERDAY'S HEAVY RAINS.


LAT...LON 4004 7462 4043 7517 4089 7465 4076 7436
      4068 7445 4066 7445 4067 7440 4060 7444
      4061 7421 4056 7421 4055 7424 4049 7426
      4045 7420 4046 7418

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 18, 6:58 AM ESTFreezing Rain AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more6 hr
Jan 18, 11:22 AM ESTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem6 hr
Jan 18, 11:43 AM ESTAreal Flood WarningPHIBurlington, Camden, Gloucester, Salem10 hr
Jan 18, 11:57 AM ESTAreal Flood AdvisoryPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more8 hr
Jan 18, 2:24 PM ESTSpecial Weather StatementPHIOcean36 min

Nearby

Areal Flood Warnings in New Jersey, 2015Areal Flood Warnings in Pennsylvania, 2015Every areal flood warning in 2015

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.