Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 13, NWS Philadelphia/Mount Holly

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

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2015, 7:28 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 28 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, 7:28 PM EDT (23:28 UTC)
Expired
May 16, 2015, 7:56 PM EDT
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 130 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.

846 
WUUS51 KPHI 162328
SVRPHI
NJC023-027-035-170015-
/O.NEW.KPHI.SV.W.0013.150516T2328Z-150517T0015Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  EASTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 815 PM EDT

* AT 728 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 MILLINGTON...OR NEAR
  PLAINFIELD...AND MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEW BRUNSWICK...SOMERSET...EDISON...CARTERET...MIDDLESEX...BOUND
  BROOK...FAR HILLS...SOCIETY HILL...MILLINGTON...COLONIA...BASKING
  RIDGE...MARTINSVILLE...NORTH BRUNSWICK TOWNSHIP...WOODBRIDGE...
  SOUTH PLAINFIELD...NORTH PLAINFIELD...HIGHLAND PARK...METUCHEN...
  BERNARDSVILLE AND DUNELLEN.

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 4057 7421 4045 7451 4070 7462 4075 7446
      4072 7440 4067 7446 4066 7445 4066 7440
      4063 7442 4060 7446 4061 7431 4059 7429
      4060 7426 4059 7420
TIME...MOT...LOC 2328Z 329DEG 17KT 4068 7450 

$$

ROBERTSON
1 follow-up statement
691 
WWUS51 KPHI 162356
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
756 PM EDT SAT MAY 16 2015

NJC023-027-035-170005-
/O.CAN.KPHI.SV.W.0013.000000T0000Z-150517T0015Z/
MIDDLESEX NJ-MORRIS NJ-SOMERSET NJ-
756 PM EDT SAT MAY 16 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MIDDLESEX...SOUTH
CENTRAL MORRIS AND EASTERN SOMERSET COUNTIES IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4057 7421 4045 7451 4070 7462 4075 7446
      4072 7440 4067 7446 4066 7445 4066 7440
      4063 7442 4060 7446 4061 7431 4059 7429
      4060 7426 4059 7420
TIME...MOT...LOC 2355Z 329DEG 17KT 4057 7441 

$$

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, 6:53 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset37 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, 7:34 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.