Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 6, 2012Burlington County, Camden County, Gloucester County, New Jersey; Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 6, 2012, 12:00 AM EDT for Burlington County, Camden County, Gloucester County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 60 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
Aug 6, 2012, 12:00 AM EDT (04:00 UTC)
Expired
Aug 6, 2012, 1:00 AM EDT
In force
60 min
Issued by
NWS Philadelphia/Mount Holly

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 32 km from the middle of the area, began a volume at 04:01 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 00:00Z, 4.0 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, Brookhaven, NY at 00:00Z on 2012-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1710 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 00:00Z on 2012-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
1710 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
748 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
120 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.

472 
WWUS81 KPHI 060400
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1200 AM EDT MON AUG 6 2012

NJZ015-017>019-027-PAZ068>071-060500-
BUCKS PA-CAMDEN NJ-DELAWARE PA-GLOUCESTER NJ-MERCER NJ-MONTGOMERY PA-
NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SOUTHEASTERN BURLINGTON 
1200 AM EDT MON AUG 6 2012

...A CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT BUCKS... 
BURLINGTON...CAMDEN...DELAWARE...GLOUCESTER...MERCER...MONTGOMERY 
AND PHILADELPHIA COUNTIES...

AT 1157 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
A CLUSTER OF STRONG THUNDERSTORMS 13 MILES SOUTH OF CAMDEN...MOVING 
EAST AT 25 MPH. THE THUNDERSTORMS WILL BE NEAR CLEMENTON... 
LINDENWOLD AROUND 1215 AM...MARLTON LAKES...BERLIN AROUND 1230 
AM...MEDFORD LAKES...LEISURETOWNE AROUND 1245 AM...PEMBERTON HEIGHTS 
AND PRESIDENTIAL LAKES AROUND 100 AM.

VERY HEAVY RAIN WILL FALL FROM THESE STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THE STORMS.

LAT...LON 3979 7441 3972 7473 3973 7474 3972 7475
      3963 7515 3966 7519 4007 7536 4026 7464
      4019 7461 4018 7462

$$

HAYES

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 9:17 PM EDTSpecial Weather StatementPHIAtlantic, Camden, Cape May, Cumberland, Gloucester, Salem58 min
Aug 5, 9:48 PM EDTSpecial Weather StatementPHIBurlington, Mercer, Monmouth57 min
Aug 5, 10:00 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester, Monmouth, Ocean60 min
Aug 5, 10:14 PM EDTSpecial Marine WarningPHI2 hr
Aug 5, 10:42 PM EDTSpecial Weather StatementPHIMonmouth48 min
Aug 5, 10:47 PM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean43 min
Aug 5, 11:02 PM EDTSpecial Weather StatementPHIOcean58 min
Aug 5, 11:25 PM EDTSpecial Marine WarningPHI65 min
Aug 5, 11:31 PM EDTAreal Flood AdvisoryPHISalem3 hr
Aug 5, 11:42 PM EDTSpecial Weather StatementPHIGloucester, Salem63 min
Aug 6, 12:38 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more3 hr
Aug 6, 12:46 AM EDTSpecial Weather StatementPHIBurlington, Camden, Ocean59 min
Aug 6, 1:09 AM EDTSpecial Weather StatementPHIAtlantic66 min
Aug 6, 1:36 AM EDTSpecial Marine WarningPHI54 min
Aug 6, 2:23 AM EDTSpecial Weather StatementPHIAtlantic67 min
Aug 6, 3:32 AM EDTSpecial Weather StatementPHIAtlantic, Cumberland58 min
Aug 6, 5:21 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Cumberland, Gloucester, Ocean113 min
Aug 5, 10:50 PM EDTSpecial Weather StatementPHINew Castle55 min

Nearby

Special Weather Statements in New Jersey, 2012Special Weather Statements in Pennsylvania, 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.