Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 7, 2012Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 7, 2012, 7:03 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 57 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 7, 2012, 7:03 PM EDT (23:03 UTC)
Expired
Jul 7, 2012, 8:00 PM EDT
In force
57 min
Issued by
NWS Philadelphia/Mount Holly

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 23:06 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, 11.1 hours before the alert went out and 201 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 2012-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 335 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 2012-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
335 J/kg
Mixed-layer CIN
-291 J/kg
Mixed-layer LCL
1325 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

335 
WWUS81 KPHI 072303
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
703 PM EDT SAT JUL 7 2012

NJZ016>022-027-080000-
ATLANTIC NJ-CAMDEN NJ-CUMBERLAND NJ-GLOUCESTER NJ-
NORTHWESTERN BURLINGTON NJ-OCEAN NJ-SALEM NJ-
SOUTHEASTERN BURLINGTON NJ-
703 PM EDT SAT JUL 7 2012

...GUST FRONT FROM THUNDERSTORMS WILL AFFECT 
ATLANTIC...BURLINGTON...CAMDEN...CUMBERLAND...GLOUCESTER...OCEAN AND 
SALEM COUNTIES...

AT 700 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
GUST FRONT FROM WEAKENING THUNDERSTORMS ALONG A LINE EXTENDING FROM 
8 MILES SOUTH OF TRENTON TO 2 MILES SOUTHEAST OF PHILADELPHIA TO 11 
MILES WEST OF PHILADELPHIA...MOVING SOUTH AT 40 MPH. THE GUST FRONT 
WILL BE NEAR WESTAMPTON...MOORESTOWN-LENOLA AROUND 700 
PM...WRIGHTSTOWN...FORT DIX AROUND 715 PM...PRESIDENTIAL 
LAKES...CHATSWORTH AROUND 730 PM...WADING RIVER AND PENN STATE 
FOREST AROUND 745 PM.

WIND GUSTS BETWEEN 40 AND 50 MPH ARE POSSIBLE WITH THIS GUST FRONT, 
ESPECIALLY IN THE LOCAL PHILADELPHIA AREA. PLEASE BE ALERT FOR
STRONG GUSTY WINDS AND DO NOT WAIT FOR LIGHTNING TO TAKE PREVENTATIVE
MEASURES. WEAK TREE LIMBS AND LAWN FURNITURE CAN BE TOSSED AROUND.

LAT...LON 3943 7488 3941 7523 3982 7539 3985 7533
      3985 7526 3988 7515 3997 7512 4007 7494
      4008 7487 4013 7482 4013 7474 4015 7471
      4018 7471 4014 7459 4008 7455 4009 7452
      3972 7420

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 12:30 PM EDTSpecial Weather StatementPHIMorris, Sussex90 min
Jul 7, 5:57 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Warren63 min
Jul 7, 6:25 PM EDTSevere Thunderstorm WarningPHIHunterdon, Somerset, Warren37 min
Jul 7, 6:54 PM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth, Ocean, Somerset46 min
Jul 7, 7:22 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean53 min
Jul 7, 7:24 PM EDTSpecial Marine WarningPHI96 min
Jul 7, 7:42 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean63 min
Jul 7, 7:55 PM EDTSpecial Weather StatementPHIAtlantic65 min
Jul 7, 4:49 PM EDTSpecial Weather StatementPHIBerks, Carbon, Lehigh, Northampton86 min
Jul 7, 5:07 PM EDTSevere Thunderstorm WarningPHIBerks, Carbon, Lehigh, Monroe, Northampton53 min
Jul 7, 6:58 PM EDTSevere Thunderstorm WarningPHIBerks, Chester, Delaware, Montgomery48 min

Nearby

Special Weather Statements in New Jersey, 2012Every special weather statement in 2012

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.