Alert archive / New Jersey / Special Weather Statements in 2015

Special Weather Statement, NWS Philadelphia/Mount Holly

August 4, 2015Morris County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 4, 2015, 2:30 AM EDT for Morris County, Warren County, New Jersey. It was in force for 60 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 4, 2015, 2:30 AM EDT (06:30 UTC)
Expired: Aug 4, 2015, 3:30 AM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 106 km from the middle of the area, began a volume at 06:33 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, 6.5 hours before the alert went out and 144 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: 1050 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

935 
WWUS81 KPHI 040630
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
230 AM EDT TUE AUG 4 2015
 
NJZ001-007>010-PAZ055-062-105-040730-
SUSSEX-SOMERSET-MORRIS-HUNTERDON-WARREN-MONROE-NORTHAMPTON-UPPER
BUCKS-
230 AM EDT TUE AUG 4 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN HUNTERDON...WARREN...
MORRIS...SOUTHERN SUSSEX...NORTHWESTERN SOMERSET...NORTHERN BUCKS...
EASTERN NORTHAMPTON AND SOUTH CENTRAL MONROE COUNTIES...

AT 230 AM EDT...A STRONG THUNDERSTORM WAS OVER NAZARETH...OR NEAR
EASTON...MOVING EAST AT 50 MPH.

WIND GUSTS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
EASTON...MORRISTOWN...DOVER...MADISON...HOPATCONG...FORKS...FLORHAM
PARK...EAST HANOVER...HACKETTSTOWN...CHATHAM...BOONTON...WILSON...
WHARTON...WASHINGTON...ROCKAWAY...BLAIRSTOWN...MORRIS PLAINS...
BANGOR...MOUNT ARLINGTON AND MENDHAM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4108 7449 4104 7450 4105 7445 4102 7443
      4102 7440 4082 7434 4079 7437 4076 7437
      4072 7439 4062 7477 4054 7523 4090 7535
      4109 7450
TIME...MOT...LOC 0630Z 258DEG 44KT 4072 7533 
$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 2:07 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Somerset	53 min
Aug 4, 2:56 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	64 min
Aug 4, 3:33 AM EDT	Special Marine Warning	PHI		57 min
Aug 4, 3:36 AM EDT	Special Weather Statement	PHI	Morris	24 min
Aug 4, 4:12 AM EDT	Special Weather Statement	PHI	Gloucester	63 min
Aug 4, 4:20 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	33 min
Aug 4, 5:25 AM EDT	Special Weather Statement	PHI	Monmouth	65 min
Aug 4, 10:53 AM EDT	Rip Current Statement	PHI	Cape May	4 hr
Aug 4, 12:06 AM EDT	Special Weather Statement	PHI	Chester	54 min
Aug 4, 12:45 AM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery, Philadelphia	60 min
Aug 4, 1:23 AM EDT	Special Weather Statement	PHI	Berks	37 min
Aug 4, 1:31 AM EDT	Severe Thunderstorm Warning	PHI	Berks	44 min
Aug 4, 1:42 AM EDT	Special Weather Statement	PHI	Carbon	48 min
Aug 4, 1:54 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	50 min
Aug 4, 5:18 AM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	57 min
Aug 4, 5:37 AM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	34 min
Aug 4, 6:11 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Aug 4, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	20 min

Nearby

Special Weather Statements in New Jersey, 2015 Every special weather statement in 2015

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.