Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

October 4, 2012Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 4, 2012, 3:41 PM EDT for Morris County, New Jersey. It was in force for 79 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
Oct 4, 2012, 3:41 PM EDT (19:41 UTC)
Expired
Oct 4, 2012, 5:00 PM EDT
In force
79 min
Issued by
NWS Philadelphia/Mount Holly

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 19:43 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 12:00Z, 7.7 hours before the alert went out and 135 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, Brookhaven, NY at 12:00Z on 2012-10-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Brookhaven, NY at 12:00Z on 2012-10-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
474 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
-28 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.

580 
WWUS81 KPHI 041941
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
341 PM EDT THU OCT 4 2012

NJZ001-007>010-042100-
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-SUSSEX NJ-WARREN NJ-
341 PM EDT THU OCT 4 2012

...SHOWERS WITH HEAVY RAINFALL WILL AFFECT WARREN...HUNTERDON...
MORRIS...SOMERSET AND SUSSEX COUNTIES...

AT 337 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH HEAVY RAINFALL ALONG A LINE EXTENDING FROM 12 MILES EAST
OF NEWTON TO 7 MILES SOUTH OF NEWTON TO 12 MILES EAST OF EASTON...
MOVING EAST AT 25 MPH. THE SHOWERS WILL BE NEAR HACKETTSTOWN AROUND
345 PM...STANHOPE...STANHOPE...NETCONG...HOPATCONG AROUND 355 PM...
LONG VALLEY AROUND 400 PM...MOUNT ARLINGTON...GREEN POND...SUCCASUNNA
AROUND 405 PM AND GREEN POND AROUND 410 PM.

VERY HEAVY RAIN WILL FALL FROM THIS SHOWER...AND WILL CAUSE WATER TO 
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

OCCASIONAL LIGHTNING...AS WELL AS LOCALLY GUSTY WINDS AROUND 30 MPH 
COULD ALSO OCCUR.

LAT...LON 4090 7433 4084 7432 4072 7443 4067 7505
      4093 7492 4113 7463 4116 7442 4109 7449
      4105 7449 4106 7445 4102 7438 4101 7430
      4098 7427 4090 7427

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 2:49 PM EDTSpecial Weather StatementPHIWarren71 min
Oct 4, 3:07 PM EDTSpecial Weather StatementPHISussex53 min
Oct 4, 3:32 PM EDTAreal Flood AdvisoryPHISussex92 min
Oct 4, 4:05 PM EDTAreal Flood AdvisoryPHIMorris94 min
Oct 4, 12:56 PM EDTSpecial Weather StatementPHICarbon64 min
Oct 4, 1:55 PM EDTSpecial Weather StatementPHICarbon, Lehigh, Monroe50 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.