Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 98, NWS Philadelphia/Mount Holly

September 1, 2013Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 1, 2013, 4:40 PM EDT for Burlington County, Ocean County, New Jersey. It was in force for 65 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
Sep 1, 2013, 4:40 PM EDT (20:40 UTC)
Expired
Sep 1, 2013, 5:45 PM EDT
In force
65 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 11 km from the middle of the area, began a volume at 20:40 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, 8.7 hours before the alert went out and 156 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 2013-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1543 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 2013-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
1543 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
643 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
47 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.

420 
WUUS51 KPHI 012040
SVRPHI
NJC005-029-012145-
/O.NEW.KPHI.SV.W.0098.130901T2040Z-130901T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
440 PM EDT SUN SEP 1 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 545 PM EDT

* AT 438 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR CEDAR GLEN LAKES...MOVING
  NORTH AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH       
  DIAMETER HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THERE ARE  
  ADDITIONAL STRENGTHENING THUNDERSTORMS NORTH OF THIS PARTICULAR    
  STORM ACROSS WESTERN OCEAN COUNTY.

* LOCATIONS IMPACTED INCLUDE...
  CEDAR GLEN LAKES...
  WHITING...
  LAKEHURST...
  WOODRUFF...
  JACKSON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS SEVERE
THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3982 7441 3987 7454 4012 7449 4018 7440
      4014 7425 4011 7424 4011 7417 4010 7416
TIME...MOT...LOC 2039Z 199DEG 8KT 3991 7442

$$

FORECASTER: GORSE
2 follow-up statements
224 
WWUS51 KPHI 012107
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
507 PM EDT SUN SEP 1 2013

NJC005-012116-
/O.CAN.KPHI.SV.W.0098.000000T0000Z-130901T2145Z/
BURLINGTON NJ-
507 PM EDT SUN SEP 1 2013

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BURLINGTON COUNTY
IS CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS WEAKENED 
AND GENERALLY MOVED OUT OF THE AREA...THEREFORE THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3983 7440 3994 7448 4012 7449 4017 7441
      4017 7436 4014 7425 4011 7424 4011 7417
      4010 7416
TIME...MOT...LOC 2106Z 199DEG 8KT 4005 7436

$$

NJC029-012145-
/O.CON.KPHI.SV.W.0098.000000T0000Z-130901T2145Z/
OCEAN NJ-
507 PM EDT SUN SEP 1 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHWESTERN OCEAN COUNTY...

AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS 
TO 60 MPH. THIS STORM WAS LOCATED NEAR LAKEHURST...OR 11 MILES 
NORTHWEST OF TOMS RIVER...MOVING NORTH AT 10 MPH.

LOCATIONS IMPACTED INCLUDE...
JACKSON...
SIX FLAGS THEME PARK...
JACKSONS MILLS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO DAMAGING WINDS...CLOUD TO GROUND LIGHTNING IS 
OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! REMEMBER...IF 
YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY 
LIGHTNING.

&&

LAT...LON 3983 7440 3994 7448 4012 7449 4017 7441
      4017 7436 4014 7425 4011 7424 4011 7417
      4010 7416
TIME...MOT...LOC 2106Z 199DEG 8KT 4005 7436

$$

FORECASTER: GORSE
613 
WWUS51 KPHI 012120
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
520 PM EDT SUN SEP 1 2013

NJC029-012129-
/O.CAN.KPHI.SV.W.0098.000000T0000Z-130901T2145Z/
OCEAN NJ-
520 PM EDT SUN SEP 1 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN COUNTY IS
CANCELLED...

THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE 
THUNDERSTORM WARNING HAS BEEN CANCELLED. SUB SEVERE STORMS MAY 
PERSIST AROUND SIX FLAGS PARK FOR THE NEXT HALF HOUR OR SO. 

LAT...LON 3983 7440 3994 7448 4012 7449 4017 7441
      4017 7436 4014 7425 4011 7424 4011 7417
      4010 7416
TIME...MOT...LOC 2119Z 199DEG 8KT 4008 7435

$$

FORECASTER: GAINES

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 4:23 AM EDTSpecial Weather StatementPHIMiddlesex52 min
Sep 1, 4:33 AM EDTAreal Flood AdvisoryPHIMiddlesex4 hr
Sep 1, 7:24 AM EDTSpecial Weather StatementPHIWarren96 min
Sep 1, 7:51 AM EDTSpecial Weather StatementPHIHunterdon84 min
Sep 1, 9:13 AM EDTSpecial Weather StatementPHIMiddlesex, Somerset92 min
Sep 1, 3:33 PM EDTSpecial Weather StatementPHIAtlantic42 min
Sep 1, 3:44 PM EDTSevere Thunderstorm WarningPHIAtlantic61 min
Sep 1, 4:13 PM EDTSpecial Weather StatementPHIMonmouth62 min
Sep 1, 4:25 PM EDTSpecial Weather StatementPHIOcean65 min
Sep 1, 4:59 PM EDTAreal Flood AdvisoryPHIBurlington, Ocean2 hr
Sep 1, 7:25 PM EDTSpecial Weather StatementPHIHunterdon65 min
Sep 1, 7:31 PM EDTAreal Flood AdvisoryPHIHunterdon, Warren119 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2013Every severe thunderstorm warning in 2013

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.