Alert archive / New Jersey / Special Weather Statements in 2013

Special Weather Statement, NWS Philadelphia/Mount Holly

July 19, 2013Hunterdon County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 19, 2013, 8:26 PM EDT for Hunterdon County, New Jersey. It was in force for 34 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 19, 2013, 8:26 PM EDT (00:26 UTC)
Expired: Jul 19, 2013, 9:00 PM EDT
In force: 34 min
Issued by: NWS Philadelphia/Mount Holly

County Hunterdon County, NJ

The radar

The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 00:26 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, 0.4 hours before the alert went out and 175 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: 2483 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1143 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

931 
WWUS81 KPHI 200026
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
826 PM EDT FRI JUL 19 2013

NJZ007>009-200100-
HUNTERDON NJ-MORRIS NJ-WARREN NJ-
826 PM EDT FRI JUL 19 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN HUNTERDON...SOUTHERN
WARREN AND SOUTHWESTERN MORRIS COUNTIES...

AT 822 PM EDT...A STRONG THUNDERSTORM WAS NEAR BLOOMSBURY...MOVING
NORTHEAST AT 30 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 HAMPTON AROUND 835 PM...GLEN GARDNER AROUND 
840 PM...LEBANON AROUND 845 PM...CALIFON AROUND 850 PM AND LONG 
VALLEY AROUND 855 PM.

LAT...LON 4070 7471 4067 7473 4065 7472 4050 7506
      4054 7507 4057 7510 4058 7513 4068 7518
      4090 7483

$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:05 PM EDT	Special Weather Statement	PHI	Hunterdon	25 min
Jul 19, 8:58 PM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	32 min
Jul 19, 9:24 PM EDT	Special Weather Statement	PHI	Somerset	36 min
Jul 20, 4:18 PM EDT	Special Weather Statement	PHI	Morris	57 min
Jul 20, 5:47 PM EDT	Special Weather Statement	PHI	Monmouth	58 min
Jul 20, 6:36 PM EDT	Special Weather Statement	PHI	Somerset	39 min
Jul 20, 6:41 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	64 min
Jul 20, 6:57 PM EDT	Special Weather Statement	PHI	Hunterdon	63 min
Jul 20, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	59 min
Jul 20, 7:54 PM EDT	Special Weather Statement	PHI	Salem	66 min
Jul 19, 8:24 PM EDT	Special Weather Statement	PHI	Berks	36 min
Jul 19, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks	42 min
Jul 19, 9:01 PM EDT	Special Weather Statement	PHI	Chester	29 min
Jul 19, 9:07 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Northampton	38 min
Jul 19, 9:41 PM EDT	Special Weather Statement	PHI	Northampton	34 min
Jul 20, 2:39 PM EDT	Special Weather Statement	PHI	Monroe	51 min
Jul 20, 3:31 PM EDT	Special Weather Statement	PHI	Monroe	59 min
Jul 20, 5:13 PM EDT	Special Weather Statement	PHI	Lehigh	62 min
Jul 19, 8:42 PM EDT	Special Weather Statement	PHI	Cecil	33 min

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.