Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

October 2, 2012Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 2, 2012, 5:33 PM EDT for Salem 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
Oct 2, 2012, 5:33 PM EDT (21:33 UTC)
Expired
Oct 2, 2012, 6:30 PM EDT
In force
57 min
Issued by
NWS Philadelphia/Mount Holly

County Salem County, NJ

The radar

The Dover AFB radar (KDOX), 68 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.6 hours before the alert went out and 64 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Phillips Aaf/Abe, MD at 12:00Z on 2012-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 307 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
654 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
307 m²/s²
0-3 km storm-relative helicity
375 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.

580 
WWUS81 KPHI 022133
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
533 PM EDT TUE OCT 2 2012

DEZ001-002-NJZ016-017-021-022230-
CUMBERLAND NJ-GLOUCESTER NJ-KENT DE-NEW CASTLE DE-SALEM NJ-
533 PM EDT TUE OCT 2 2012

...THUNDERSTORMS WILL AFFECT PORTIONS OF CUMBERLAND...GLOUCESTER...
KENT...NEW CASTLE AND SALEM COUNTIES...

AT 531 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN 
AREA OF THUNDERSTORMS FROM ABOUT 15 MILES NORTH OF DOVER TO THE
FAR NORTHERN END OF DELAWARE BAY AND ADJACENT PORTIONS OF 
NEW JERSEY...MOVING NORTHEAST AT 30 MPH. THE THUNDERSTORM WILL BE 
NEAR SHILOH AND SEABROOK FARMS AROUND 545 PM...FRANKLINVILLE AND 
OLIVET AROUND 600 PM AND VICTORY LAKES AROUND 615 PM.

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

DANGEROUS CLOUD TO GROUND LIGHTNING WAS OCCURRING WITH THE STORMS. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THE STORMS.

LAT...LON 3952 7498 3932 7533 3940 7545 3938 7550
      3932 7543 3927 7541 3921 7552 3938 7569
      3946 7558 3939 7551 3940 7546 3943 7547
      3945 7554 3948 7555 3968 7523 3966 7491
      3960 7488

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 12:51 PM EDTSpecial Weather StatementPHICamden54 min
Oct 2, 3:28 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren2 hr
Oct 2, 4:34 PM EDTSpecial Weather StatementPHICumberland56 min
Oct 2, 6:47 PM EDTSpecial Weather StatementPHISalem58 min
Oct 2, 6:55 PM EDTAreal Flood AdvisoryPHICumberland, Gloucester, Salem97 min
Oct 2, 6:23 PM EDTAreal Flood WarningPHIMontgomery65 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.