Alert archive / New Jersey / Special Weather Statements in 2013

Special Weather Statement, NWS Philadelphia/Mount Holly

July 18, 2013Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 18, 2013, 6:13 PM EDT for Camden County, New Jersey. It was in force for 47 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 18, 2013, 6:13 PM EDT (22:13 UTC)
Expired: Jul 18, 2013, 7:00 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly

County Camden County, NJ

The radar

The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 22:14 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, 10.2 hours before the alert went out and 120 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1674 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 37 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.

077 
WWUS81 KPHI 182213
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
613 PM EDT THU JUL 18 2013

NJZ018-019-027-182300-
CAMDEN NJ-NORTHWESTERN BURLINGTON NJ-SOUTHEASTERN BURLINGTON NJ-
613 PM EDT THU JUL 18 2013

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CAMDEN AND WEST CENTRAL
BURLINGTON COUNTIES...

AT 610 PM EDT...A STRONG THUNDERSTORM WAS NEAR MARLTON...MOVING EAST
AT 10 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM. FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT STAY IN THE
OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. 

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO 
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID 
RISES ON SMALL STREAMS AND CREEKS. 

THIS STORM WILL BE NEAR MARLTON LAKES AROUND 625 PM...MEDFORD LAKES 
AROUND 640 PM AND TABERNACLE AROUND 700 PM.

LAT...LON 3994 7465 3973 7473 3985 7503 3997 7498

$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 2:16 AM EDT	Special Weather Statement	PHI	Hunterdon	59 min
Jul 18, 4:31 PM EDT	Special Weather Statement	PHI	Burlington	44 min
Jul 18, 5:01 PM EDT	Special Weather Statement	PHI	Burlington	29 min
Jul 18, 5:03 PM EDT	Special Weather Statement	PHI	Burlington	27 min
Jul 18, 5:40 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jul 18, 5:41 PM EDT	Special Weather Statement	PHI	Ocean	34 min
Jul 18, 6:30 PM EDT	Special Weather Statement	PHI	Ocean	30 min
Jul 18, 6:39 PM EDT	Special Weather Statement	PHI	Burlington	66 min
Jul 18, 6:41 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	64 min
Jul 18, 6:48 PM EDT	Special Weather Statement	PHI	Ocean	42 min
Jul 18, 6:55 PM EDT	Special Weather Statement	PHI	Camden	50 min
Jul 18, 7:05 PM EDT	Special Weather Statement	PHI	Burlington	40 min
Jul 18, 7:14 PM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	61 min
Jul 18, 7:17 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	28 min
Jul 18, 7:33 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	57 min
Jul 18, 7:57 PM EDT	Special Weather Statement	PHI	Burlington	48 min
Jul 18, 11:38 AM EDT	Heat Advisory	PHI	Carbon, Monroe	32 hr

Nearby

Special Weather Statements in New Jersey, 2013 Every special weather statement in 2013

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.