Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 103, NWS Philadelphia/Mount Holly

July 8, 20144 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2014, 8:21 PM EDT for 4 counties in New Jersey. It was in force for 69 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 8, 2014, 8:21 PM EDT (00:21 UTC)
Expired
Jul 8, 2014, 9:30 PM EDT
In force
69 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 00:24 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.

What was reported inside it

TimeReportWhereRemark
Jul 8, 8:40 PM EDTTSTM WND DMGWest Deptford Twp, NJTREES AND POWER LINES DOWN IN PORTIONS OF THE TOWNSHIP.
Jul 8, 8:42 PM EDTTSTM WND DMGWoodbury, NJTREES REPORTED DOWN IN WOODBURY... MULLICA HILL... WASHINGTON TOWNSHIP AND DEPTFORD TOWNSHIP.
Jul 8, 8:48 PM EDTTSTM WND GST 62Runnemede, NJ
Jul 8, 8:50 PM EDTTSTM WND DMGCherry Hill, NJMANY TREES AND WIRES DOWN.
Jul 8, 8:50 PM EDTTSTM WND DMGPennsauken, NJTREE DOWN. POLES AND WIRES DOWN IN THE AREA.
Jul 8, 8:50 PM EDTTSTM WND GST 50Sewell, NJ
Jul 8, 8:51 PM EDTTSTM WND DMGStratford, NJTREES DOWN AND POWER IS OUT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 8, 5:05 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.4 hours before the alert went out and 196 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, Wallops Is Stn, VA at 00:00Z on 2014-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1201 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2014-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
1201 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1361 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

113 
WUUS51 KPHI 090021
SVRPHI
NJC007-011-015-033-090130-
/O.NEW.KPHI.SV.W.0103.140709T0021Z-140709T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
821 PM EDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SALEM COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 930 PM EDT

* AT 817 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  PAOLI TO BELLEFONTE TO TOWNSEND...MOVING EAST AT 50 MPH. THESE
  STORMS ARE CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70
  MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SALEM AND HOPE CREEK AROUND 825 PM EDT...
  GIBBSTOWN AND WOODSTOWN AROUND 830 PM EDT...
  MULLICA HILL AND WEST DEPTFORD AROUND 835 PM EDT...
  SHILOH AND GLOUCESTER CITY AROUND 840 PM EDT...
  OLIVET AND BRIDGETON AROUND 845 PM EDT...
  WILLIAMSTOWN AND LINDENWOLD AROUND 850 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR PATH...MOVE INDOORS 
TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO 
DO SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE 
NATIONAL WEATHER SERVICE.

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING WIND 
DAMAGE ACROSS NORTHERN MARYLAND AND SOUTHEAST PENNSYLVANIA. DO NOT 
STAY OUTDOORS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

&&

LAT...LON 3932 7525 3932 7533 3935 7539 3943 7547
      3946 7555 3957 7552 3960 7556 3964 7556
      3981 7540 3985 7534 3988 7515 3995 7514
      4000 7504 3998 7501 3995 7502 3989 7493
      3980 7491 3978 7489 3979 7481 3973 7473
TIME...MOT...LOC 0020Z 270DEG 43KT 4004 7543 3976 7545
          3942 7565

$$

FORECASTER: AMC
1 follow-up statement
084 
WWUS51 KPHI 090127
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
927 PM EDT TUE JUL 8 2014

NJC007-011-015-033-090135-
/O.EXP.KPHI.SV.W.0103.000000T0000Z-140709T0130Z/
CAMDEN NJ-GLOUCESTER NJ-SALEM NJ-CUMBERLAND NJ-
927 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CUMBERLAND...
SALEM...GLOUCESTER AND CAMDEN COUNTIES WILL EXPIRE AT 930 PM EDT...

THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE MOVED EAST AND AWAY 
FROM THE AREA. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. 

LAT...LON 3932 7525 3932 7533 3935 7539 3943 7547
      3946 7555 3957 7552 3960 7556 3964 7556
      3981 7540 3985 7534 3988 7515 3995 7514
      4000 7504 3998 7501 3995 7502 3989 7493
      3980 7491 3978 7489 3979 7481 3973 7473
TIME...MOT...LOC 0125Z 270DEG 43KT 4004 7442 3976 7444
          3942 7464

$$

AMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 8:16 PM EDTSpecial Marine WarningPHI119 min
Jul 8, 8:44 PM EDTSevere Thunderstorm WarningPHIBurlington69 min
Jul 8, 8:56 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more73 min
Jul 8, 9:02 PM EDTSpecial Weather StatementPHIAtlantic, Cape May, Cumberland58 min
Jul 8, 9:12 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean63 min
Jul 8, 9:22 PM EDTSpecial Marine WarningPHI113 min
Jul 8, 9:48 PM EDTSpecial Marine WarningPHI117 min
Jul 9, 8:52 AM EDTSmall Craft AdvisoryPHI12 hr
Jul 9, 2:48 PM EDTSpecial Weather StatementPHISussex72 min
Jul 9, 3:25 PM EDTSpecial Weather StatementPHISussex65 min
Jul 9, 3:28 PM EDTSevere Thunderstorm WarningPHISussex49 min
Jul 9, 5:38 PM EDTSevere Thunderstorm WarningPHISussex, Warren64 min
Jul 9, 6:27 PM EDTSevere Thunderstorm WarningPHIMorris63 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.