Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 15, 2012Morris County, Sussex County, Warren County, New Jersey; Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 15, 2012, 4:33 PM EDT for Morris County, Sussex County, Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 87 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 15, 2012, 4:33 PM EDT (20:33 UTC)
Expired: Aug 15, 2012, 6:00 PM EDT
In force: 87 min
Issued by: NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Northampton County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.6 hours before the alert went out and 139 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: 1897 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

564 
WWUS81 KPHI 152033
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
433 PM EDT WED AUG 15 2012

NJZ001-007>010-PAZ062-152200-
HUNTERDON NJ-MORRIS NJ-NORTHAMPTON PA-SOMERSET NJ-SUSSEX NJ-WARREN NJ-
433 PM EDT WED AUG 15 2012

...SCATTERED STRONG THUNDERSTORMS WILL AFFECT PARTS OF HUNTERDON...
MORRIS...NORTHAMPTON...SOMERSET...SUSSEX AND WARREN COUNTIES...

AT 427 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS...SOME OF THEM STRONG...MOVING ACROSS NORTHAMPTON 
COUNTY IN PENNSYLVANIA EAST OF ALLENTOWN AND ACROSS PORTIONS OF 
NORTHERN NEW JERSEY NEAR AND NORTH OF INTERSTATE 78. THE STORMS WILL 
MOVE ACROSS NORTHERN NEW JERSEY THROUGH 600 PM. 

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

WIND GUSTS TO 45 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.

LAT...LON 4121 7437 4109 7449 4105 7449 4106 7445
      4102 7438 4101 7430 4090 7427 4090 7433
      4086 7432 4080 7436 4074 7436 4067 7445
      4067 7440 4061 7442 4062 7521 4068 7540
      4115 7492 4127 7450

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 1:57 AM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	63 min
Aug 15, 2:00 AM EDT	Special Weather Statement	PHI	Warren	90 min
Aug 15, 2:13 AM EDT	Special Weather Statement	PHI	Sussex	62 min
Aug 15, 3:10 AM EDT	Areal Flood Advisory	PHI	Sussex	111 min
Aug 15, 3:22 AM EDT	Special Weather Statement	PHI	Sussex	53 min
Aug 15, 2:38 PM EDT	Special Weather Statement	PHI	Monmouth	52 min
Aug 15, 2:53 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	52 min
Aug 15, 2:58 PM EDT	Special Weather Statement	PHI	Atlantic	62 min
Aug 15, 3:17 PM EDT	Special Marine Warning	PHI		43 min
Aug 15, 3:23 PM EDT	Special Weather Statement	PHI	Sussex	52 min
Aug 15, 3:25 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	65 min
Aug 15, 4:14 PM EDT	Areal Flood Warning	PHI	Monmouth	3 hr
Aug 15, 4:24 PM EDT	Special Weather Statement	PHI	Atlantic	66 min
Aug 15, 4:45 PM EDT	Special Weather Statement	PHI	Ocean	90 min
Aug 15, 5:22 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	38 min
Aug 15, 5:28 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	34 min
Aug 15, 5:48 PM EDT	Special Weather Statement	PHI	Middlesex	57 min
Aug 15, 5:58 PM EDT	Special Weather Statement	PHI	Mercer	62 min
Aug 15, 6:06 PM EDT	Special Weather Statement	PHI	Monmouth	84 min
Aug 15, 6:19 PM EDT	Areal Flood Warning	PHI	Mercer, Middlesex, Monmouth, Ocean	118 min
Aug 15, 6:50 PM EDT	Areal Flood Warning	PHI	Morris	87 min
Aug 15, 6:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester	62 min
Aug 14, 11:10 PM EDT	Special Weather Statement	PHI	Berks	80 min
Aug 14, 11:40 PM EDT	Special Weather Statement	PHI	Berks, Chester	95 min
Aug 15, 12:28 AM EDT	Special Weather Statement	PHI	Berks, Lehigh, Montgomery	92 min
Aug 15, 12:49 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Lehigh, Montgomery	3 hr
Aug 15, 1:26 AM EDT	Special Weather Statement	PHI	Bucks, Montgomery	94 min
Aug 15, 1:28 AM EDT	Special Weather Statement	PHI	Carbon, Monroe	62 min
Aug 15, 1:48 AM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery	85 min
Aug 14, 10:37 PM EDT	Special Weather Statement	PHI	Kent	53 min
Aug 15, 6:55 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	49 min
Aug 15, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's, Talbot	35 min

Nearby

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