Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 134, NWS Philadelphia/Mount Holly

July 3, 20114 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2011, 5:34 PM EDT for 4 counties in New Jersey. It was in force for 56 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
Jul 3, 2011, 5:34 PM EDT (21:34 UTC)
Expired
Jul 3, 2011, 6:30 PM EDT
In force
56 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 28 km from the middle of the area, began a volume at 21:34 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, 9.6 hours before the alert went out and 164 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 2011-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 291 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 12:00Z on 2011-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
291 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
875 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

726 
WUUS51 KPHI 032134
SVRPHI
NJC005-021-023-025-032230-
/O.NEW.KPHI.SV.W.0134.110703T2134Z-110703T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
534 PM EDT SUN JUL 3 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  SOUTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 630 PM EDT

* AT 534 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  PRINCETON...AND MOVING SOUTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EDINBURG AROUND 550 PM EDT...
  MERCERVILLE-HAMILTON SQUARE AND HIGHTSTOWN AROUND 555 PM EDT...
  WINDSOR AND WHITE HORSE AROUND 600 PM EDT...
  ALLENTOWN AND CROSSWICKS AROUND 615 PM EDT...
  IMLAYSTOWN AROUND 625 PM EDT...
  CREAM RIDGE AND GEORGETOWN AROUND 630 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4010 7451 4007 7456 4003 7468 4034 7480
      4038 7455 4015 7444
TIME...MOT...LOC 2134Z 339DEG 13KT 4031 7467

$$

IOVINO
1 follow-up statement
055 
WWUS51 KPHI 032200
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
600 PM EDT SUN JUL 3 2011

NJC023-032210-
/O.CAN.KPHI.SV.W.0134.000000T0000Z-110703T2230Z/
MIDDLESEX NJ-
600 PM EDT SUN JUL 3 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MIDDLESEX COUNTY
IS CANCELLED...

LAT...LON 4007 7456 4003 7468 4017 7474 4027 7450
      4015 7444
TIME...MOT...LOC 2200Z 339DEG 13KT 4012 7458

$$

NJC005-021-025-032230-
/O.CON.KPHI.SV.W.0134.000000T0000Z-110703T2230Z/
MERCER NJ-MONMOUTH NJ-BURLINGTON NJ-
600 PM EDT SUN JUL 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTH CENTRAL BURLINGTON...SOUTHWESTERN MONMOUTH AND SOUTHEASTERN
MERCER COUNTIES...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR ALLENTOWN...MOVING SOUTH AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  GEORGETOWN BY 605 PM EDT...

LAT...LON 4007 7456 4003 7468 4017 7474 4027 7450
      4015 7444
TIME...MOT...LOC 2200Z 339DEG 13KT 4012 7458

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 9:38 AM EDTSpecial Weather StatementPHIHunterdon, Morris, Sussex, Warren82 min
Jul 3, 11:08 AM EDTSpecial Weather StatementPHIBurlington, Hunterdon, Mercer, Middlesex, Morris, Ocean and 3 more52 min
Jul 3, 12:47 PM EDTSpecial Weather StatementPHISussex58 min
Jul 3, 2:11 PM EDTSpecial Weather StatementPHISussex49 min
Jul 3, 2:52 PM EDTSpecial Weather StatementPHISussex, Warren68 min
Jul 3, 3:48 PM EDTSpecial Weather StatementPHIWarren72 min
Jul 3, 3:58 PM EDTAreal Flood AdvisoryPHIWarren4 hr
Jul 3, 4:19 PM EDTSevere Thunderstorm WarningPHIHunterdon, Warren56 min
Jul 3, 5:10 PM EDTSpecial Weather StatementPHIMiddlesex, Monmouth65 min
Jul 3, 5:39 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean51 min
Jul 3, 5:57 PM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean63 min
Jul 3, 6:24 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Ocean66 min
Jul 3, 7:11 PM EDTSpecial Marine WarningPHI94 min
Jul 3, 7:35 PM EDTSpecial Weather StatementPHIAtlantic55 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.