Alert archive / New Jersey / Areal Flood Warnings in 2014

Areal Flood Warning 13, NWS Philadelphia/Mount Holly

April 15, 2014Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Apr 15, 2014, 7:54 PM EDT for Somerset County, 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
Apr 15, 2014, 7:54 PM EDT (23:54 UTC)
Expired
Apr 16, 2014, 1:45 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

County Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 83 km from the middle of the area, began a volume at 23:56 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

Brookhaven, NY (KOKX), launched 12:00Z, 11.9 hours before the alert went out and 155 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 2014-04-15Temperature 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 2014-04-15The 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
443 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
360 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.

725 
WGUS41 KPHI 152354
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
754 PM EDT TUE APR 15 2014

NJC035-160545-
/O.NEW.KPHI.FA.W.0013.140415T2354Z-140416T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SOMERSET NJ-
754 PM EDT TUE APR 15 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR...
  NORTHWESTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 145 AM EDT

* AT 750 PM EDT...MINOR FLOODING WAS OCCURRING ALONG THE LAMINGTON
  RIVER IN NORTHWESTERN SOMERSET COUNTY. THE RIVER LEVEL SHOULD RISE
  SLOWLY BEFORE CRESTING THIS EVENING WITH THE RIVER RETURNING
  WITHIN ITS BANKS OVERNIGHT.

THIS FLOOD WARNING MEANS THAT MINOR FLOODING HAS BEEN REPORTED. 
STREAM RISES WILL BE SLOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. WHEN 
ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN 
AROUND...DONT DROWN.

&&

LAT...LON 4059 7463 4059 7472 4062 7470 4064 7473
      4067 7473 4070 7471 4072 7472 4074 7464
      4074 7462

$$

IOVINO
1 follow-up statement
064 
WGUS81 KPHI 160434
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1234 AM EDT WED APR 16 2014

NJC035-160439-
/O.CAN.KPHI.FA.W.0013.000000T0000Z-140416T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SOMERSET NJ-
1234 AM EDT WED APR 16 2014

...THE FLOOD WARNING HAS BEEN CANCELLED FOR NORTHWESTERN SOMERSET
COUNTY...

THE LAMINGTON RIVER HAS CRESTED AND FALLEN BELOW FLOOD STAGE. THE 
RIVER WILL CONTINUE TO FALL THROUGH THE OVERNIGHT HOURS, THEREFORE 
THE FLOOD WARNING HAS BEEN CANCELLED. 

A FLOOD WARNING REMAINS FOR THE NORTH BRANCH RARITAN RIVER IN EAST 
CENTRAL SOMERSET COUNTY.

LAT...LON 4059 7463 4059 7472 4062 7470 4064 7473
      4067 7473 4070 7471 4072 7472 4074 7464
      4074 7462

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 3:40 AM EDTFreeze WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more29 hr
Apr 15, 4:05 AM EDTGale WarningPHI30 hr
Apr 15, 12:44 PM EDTAreal Flood AdvisoryPHIHunterdon, Warren4 hr
Apr 15, 12:58 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Somerset, Sussex, Warren4 hr
Apr 15, 2:46 PM EDTSpecial Weather StatementPHIHunterdon44 min
Apr 15, 3:20 PM EDTSpecial Weather StatementPHICamden, Gloucester, Salem40 min
Apr 15, 3:32 PM EDTFreeze WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more24 hr
Apr 15, 3:36 PM EDTSpecial Weather StatementPHIHunterdon, Somerset39 min
Apr 15, 3:56 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer34 min
Apr 15, 4:11 PM EDTSpecial Weather StatementPHISomerset34 min
Apr 15, 4:23 PM EDTSpecial Weather StatementPHIMercer, Middlesex37 min

Nearby

Areal Flood Warnings in New Jersey, 2014Every areal flood warning in 2014

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.