Alert archive / Pennsylvania / Frost Advisories in 2012

Frost Advisory 5, NWS Philadelphia/Mount Holly

April 25, 2012Carbon County, Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this frost advisory at Apr 25, 2012, 3:16 AM EDT for Carbon County, Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Apr 25, 2012, 3:16 AM EDT (07:16 UTC)
Expired
Apr 25, 2012, 7:00 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Philadelphia radar (KDIX), 130 km from the middle of the area, began a volume at 07:22 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, 7.3 hours before the alert went out and 197 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 00:00Z on 2012-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2012-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 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
50 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1104 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

191 
WWUS71 KPHI 250716
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
316 AM EDT WED APR 25 2012



NJZ001-007-PAZ054-055-062-251100-
/O.NEW.KPHI.FR.Y.0005.120425T0716Z-120425T1100Z/
SUSSEX-WARREN-CARBON-MONROE-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...JIM THORPE...
STROUDSBURG...BETHLEHEM...EASTON
316 AM EDT WED APR 25 2012

...FROST ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT UNTIL 7 AM EDT THIS MORNING.

* TEMPERATURES...30 TO 35. ISOLATED LOW TEMPERATURES OF 27 TO 28
  DEGREES EARLY THIS MORNING.

* TIMING...IN PROGRESS ESPECIALLY SUSSEX...WARREN AND MONROE COUNTIES.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS LIKELY. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$


DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 4:06 PM EDTSmall Craft AdvisoryPHI60 hr

Nearby

Frost Advisories in Pennsylvania, 2012Frost Advisories in New Jersey, 2012Every frost 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.