Alert archive / Pennsylvania / Freezing Rain Advisories in 2011

Freezing Rain Advisory 3, NWS Philadelphia/Mount Holly

February 27, 2011Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this freezing rain advisory at Feb 27, 2011, 3:28 PM EST for Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania. It took effect at Feb 28, 2011, 2:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 27, 2011, 3:28 PM EST (20:28 UTC)
In effect from
Feb 28, 2011, 2:00 AM EST
Expired
Feb 27, 2011, 11:26 PM 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 20:30 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 2011-02-27Temperature 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 2011-02-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 338 square meters per square second.1939587897117136156Sfc1 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
452 m above ground
0-6 km bulk shear
92 kt
0-1 km storm-relative helicity
338 m²/s²
0-3 km storm-relative helicity
367 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.

487 
WWUS41 KPHI 272028
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
328 PM EST SUN FEB 27 2011

...ICY CONDITIONS ARE POSSIBLE LATE TONIGHT AND EARLY MONDAY
MORNING ACROSS THE SOUTHERN POCONOS AND PARTS OF NORTHWEST NEW JERSEY...

.RAIN WILL OVERSPREAD THE REGION LATE TONIGHT AS A WARM FRONT
APPROACHES FROM THE SOUTHWEST. TEMPERATURES WILL BE HOVERING NEAR
THE FREEZING MARK IN THE NORMALLY COLDER LOCATIONS AS THE RAIN
STARTS LATE TONIGHT...RESULTING IN FREEZING RAIN. IN THE HIGHER
ELEVATIONS...LIGHT FREEZING RAIN IS POSSIBLE THROUGH THE BEGINNING
OF THE MORNING COMMUTE MONDAY.

NJZ001-PAZ054-055-281100-
/O.NEW.KPHI.ZR.Y.0003.110228T0700Z-110228T1300Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
328 PM EST SUN FEB 27 2011

...FREEZING RAIN ADVISORY IN EFFECT FROM 2 AM TO 8 AM EST
MONDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EST MONDAY. 

* LOCATIONS...MONROE AND CARBON COUNTIES IN EASTERN PENNSYLVANIA
  AND SUSSEX COUNTY IN NORTHWEST NEW JERSEY.

* HAZARD TYPES...FREEZING RAIN

* ACCUMULATIONS...ICE ACCUMULATION SHOULD AVERAGE LESS THAN 0.05
  INCHES.

* TIMING...LIGHT FREEZING RAIN IS EXPECTED IN THE HIGHER
  ELEVATIONS AFTER 200 AM. LIGHT FREEZING RAIN COULD LINGER IN THE
  NORMALLY COLDER LOCATIONS UNTIL THE BEGINNING OF THE MORNING
  COMMUTE. 

* IMPACTS...UNTREATED ROADS...SIDEWALKS AND PARKING LOTS MAY BE
  COATED WITH A THIN LAYER OF ICE. IT ONLY TAKES A SMALL AMOUNT OF
  ICE TO MAKE WALKING AND DRIVING SURFACES SLIPPERY.

* WINDS...EAST 5 TO 10 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
213 
WWUS41 KPHI 280426
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1126 PM EST SUN FEB 27 2011

NJZ001-PAZ054-055-280530-
/O.CAN.KPHI.ZR.Y.0003.110228T0700Z-110228T1300Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
1126 PM EST SUN FEB 27 2011

...FREEZING RAIN ADVISORY IS CANCELLED...

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

THERE REMAINS A CHANCE OF PATCHY FREEZING RAIN OVER THE COLDEST
INTERIOR VALLEYS TONIGHT, IT SHOULD BE ISOLATED AT WORST.

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 27, 4:00 AM ESTSmall Craft AdvisoryPHI36 hr
Feb 27, 4:44 AM ESTFlood WatchPHIHunterdon, Mercer, Morris, Somerset, Sussex, Warren34 hr
Feb 27, 3:20 PM ESTGale WarningPHI38 hr

Nearby

Freezing Rain Advisories in Pennsylvania, 2011Freezing Rain Advisories in New Jersey, 2011Every freezing rain advisory in 2011

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.