Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 11, NWS Philadelphia/Mount Holly

May 16, 2015Hunterdon County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2015, 6:53 PM EDT for Hunterdon County, Morris County, Somerset County, New Jersey. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 16, 2015, 6:53 PM EDT (22:53 UTC)
Expired
May 16, 2015, 7:30 PM EDT
In force
37 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.9 hours before the alert went out and 139 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 2015-05-16Temperature 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 2015-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
903 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
170 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.

902 
WUUS51 KPHI 162253
SVRPHI
NJC019-027-035-162330-
/O.NEW.KPHI.SV.W.0011.150516T2253Z-150516T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
653 PM EDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN HUNTERDON COUNTY IN NORTHWESTERN NEW JERSEY...
  SOUTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 730 PM EDT

* AT 652 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED OVER CHESTER...OR 9 MILES WEST OF
  MORRISTOWN...AND MOVING SOUTHEAST AT 20 MPH.

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  MENDHAM AROUND 700 PM EDT.
  MORRISTOWN AND PEAPACK AND GLADSTONE AROUND 705 PM EDT.
  FAR HILLS AROUND 710 PM EDT.
  MADISON AND BASKING RIDGE AROUND 720 PM EDT.
  MILLINGTON AROUND 725 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BERNARDSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4074 7437 4074 7438 4068 7445 4066 7446
      4057 7470 4082 7481 4092 7462 4075 7436
TIME...MOT...LOC 2252Z 323DEG 17KT 4081 7465 

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 5:26 PM EDTSevere Thunderstorm WarningPHISussex, Warren49 min
May 16, 6:03 PM EDTAreal Flood AdvisoryPHIMorris, Sussex, Warren3 hr
May 16, 6:10 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset, Sussex, Warren50 min
May 16, 6:55 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren3 hr
May 16, 7:04 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Warren26 min
May 16, 7:15 PM EDTTornado WarningPHIMorris, Somerset11 min
May 16, 7:28 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset28 min
May 16, 7:34 PM EDTSpecial Weather StatementPHIHunterdon41 min
May 16, 7:37 PM EDTSpecial Weather StatementPHISussex23 min
May 16, 7:57 PM EDTAreal Flood AdvisoryPHIHunterdon, Middlesex, Monmouth, Morris, Somerset, Sussex3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2015Every severe thunderstorm 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.