Alert archive / Pennsylvania / Freezing Rain Advisories in 2012

Freezing Rain Advisory 4, NWS Philadelphia/Mount Holly

December 15, 2012Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this freezing rain advisory at Dec 15, 2012, 3:28 PM EST for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It took effect at Dec 16, 2012, 4:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Dec 15, 2012, 3:28 PM EST (20:28 UTC)
In effect from
Dec 16, 2012, 4:00 AM EST
Expired
Dec 16, 2012, 3:30 AM EST
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 20:34 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, 8.5 hours before the alert went out and 201 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 2012-12-15Temperature 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 2012-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -85 square meters per square second.1939587897117Sfc1 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
899 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
-85 m²/s²
0-3 km storm-relative helicity
-27 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.

451 
WWUS41 KPHI 152028
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
328 PM EST SAT DEC 15 2012

NJZ001-PAZ054-055-161000-
/O.NEW.KPHI.ZR.Y.0004.121216T0900Z-121216T1500Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
328 PM EST SAT DEC 15 2012

...FREEZING RAIN ADVISORY IN EFFECT FROM 4 AM TO 10 AM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 10 AM EST SUNDAY.

* LOCATIONS...THE SOUTHERN POCONOS OD PENNSYLVANIA AND NORTHWEST
  NEW JERSEY.

* HAZARD TYPES...LIGHT FREEZING RAIN.

* ICE ACCUMULATIONS...FROM A TRACE TO A COUPLE OF HUNDREDTHS OF AN
  INCH.

* TIMING...LIGHT FREEZING RAIN SHOULD ARRIVES AFTER 400 AM ACROSS
  THE REGION...AND CONTINUE INTO THE MID TO LATE MORNING HOURS.

* IMPACTS...A LIGHT COATING OF ICE IS EXPECTED ON COLDER SURFACES...WHICH
  MAY INCLUDE UNTREATED TRAVEL SURFACES.

* WINDS...EAST AROUND 5 MPH.

* TEMPERATURES...IN THE LOWER 30S.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
1 follow-up statement
117 
WWUS41 KPHI 160830
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 AM EST SUN DEC 16 2012

NJZ001-PAZ054-055-160930-
/O.CAN.KPHI.ZR.Y.0004.121216T0900Z-121216T1500Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
330 AM EST SUN DEC 16 2012

...FREEZING RAIN ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
FREEZING RAIN ADVISORY.

TEMPERATURES ACROSS THE ADVISED AREA ARE ABOVE FREEZING AND WILL
REMAIN THAT WAY THIS MORNING. THERE COULD BE A FEW VERY ISOLATED
POCKETS OF FREEZING RAIN THROUGH THE MID-MORNING HOURS AT
ELEVATIONS ABOVE 1800 FEET...THESE AREAS WILL BE HANDLED WITH A
SPECIAL WEATHER STATEMENT INSTEAD.

$$

HEAVENER

Nearby

Freezing Rain Advisories in Pennsylvania, 2012Freezing Rain Advisories in New Jersey, 2012Every freezing rain advisory 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.