Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 18, 2012Atlantic County, Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 18, 2012, 6:09 AM EDT for Atlantic County, Cape May County, New Jersey. It was in force for 36 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 18, 2012, 6:09 AM EDT (10:09 UTC)
Expired
Aug 18, 2012, 6:45 AM EDT
In force
36 min
Issued by
NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 76 km from the middle of the area, began a volume at 10:09 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 10.2 hours before the alert went out and 157 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 2012-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 116 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, Wallops Is Stn, VA at 00:00Z on 2012-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
116 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1308 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
40 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.

020 
WWUS81 KPHI 181009
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
609 AM EDT SAT AUG 18 2012

NJZ021>025-181045-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAPE MAY NJ-
COASTAL ATLANTIC NJ-CUMBERLAND NJ-
609 AM EDT SAT AUG 18 2012

...THUNDERSTORMS WITH BRIEF VERY HEAVY RAIN WILL AFFECT 
ATLANTIC...CAPE MAY AND CUMBERLAND COUNTIES...

AT 603 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM VINELAND TO 16 MILES
SOUTH OF MILLVILLE TO 23 MILES NORTHEAST OF GEORGETOWN...MOVING EAST
AT 30 MPH. THE THUNDERSTORMS WILL BE NEAR MIZPAH...ELDORA AROUND 615
AM...WEYMOUTH...DOROTHY...BELLEPLAIN FOREST AROUND 620 AM...VILLAS...
GREEN CREEK...GOSHEN...DENNISVILLE AROUND 625 AM AND
WHITESBORO-BURLEIGH AROUND 630 AM.

VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.  THERE WILL BE A 
FEW LIGHTNING STRIKES.  

LAT...LON 3940 7435 3935 7441 3932 7450 3925 7460
      3899 7478 3893 7487 3892 7497 3894 7498
      3902 7496 3915 7490 3918 7495 3919 7503
      3921 7504 3921 7510 3952 7500 3955 7441
      3950 7439 3950 7433

$$

FORECASTER: DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 9:08 PM EDTSevere Thunderstorm WarningPHINew Castle67 min
Aug 17, 11:39 PM EDTSpecial Weather StatementPHISussex81 min
Aug 17, 8:24 PM EDTSpecial Weather StatementPHICecil, Kent81 min
Aug 17, 9:31 PM EDTSpecial Weather StatementPHICaroline, Queen Anne's89 min
Aug 17, 9:55 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot65 min
Aug 17, 10:55 PM EDTSpecial Weather StatementPHICaroline, Talbot65 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.