Alert archive / New Jersey / Frost Advisories in 2008

Frost Advisory 6, NWS Philadelphia/Mount Holly

October 7, 20088 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this frost advisory at Oct 7, 2008, 3:55 PM EDT for 8 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania. It took effect at Oct 8, 2008, 2:00 AM EDT. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Oct 7, 2008, 3:55 PM EDT (19:55 UTC)
In effect from
Oct 8, 2008, 2:00 AM EDT
Expired
Oct 8, 2008, 4:26 AM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Burlington County, NJ, Cumberland County, NJ, Hunterdon County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Warren County, NJ, Berks County, PA, Lehigh County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 20:00 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.9 hours before the alert went out and 133 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, Phillips Aaf/Abe, MD at 12:00Z on 2008-10-07Temperature 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, Phillips Aaf/Abe, MD at 12:00Z on 2008-10-07The 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
1460 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
0 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.

000 
WWUS71 KPHI 071955
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 PM EDT TUE OCT 7 2008

NJZ007-PAZ060>062-081200-
/O.NEW.KPHI.FR.Y.0006.081008T0600Z-081008T1200Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
355 PM EDT TUE OCT 7 2008

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY, WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY.

CALM WINDS AND MAINLY CLEAR SKIES WILL COMBINE TO ALLOW
TEMPERATURES TO DROP INTO THE LOWER TO MID 30S LATE TONIGHT. THAT
SHOULD GENERATE FROST ACROSS THE LEHIGH VALLEY, BERKS COUNTY AND
NORTHWEST NEW JERSEY.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR 
PLANTS MAY BE KILLED IF LEFT UNCOVERED. PEOPLE SHOULD TAKE THE 
APPROPRIATE ACTIONS OR PRECAUTIONS. 

$$

NJZ008>010-PAZ067>069-081200-
/O.NEW.KPHI.FR.Y.0006.081008T0600Z-081008T1200Z/
MORRIS-HUNTERDON-SOMERSET-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...MORRISTOWN...FLEMINGTON...SOMERVILLE...
WEST CHESTER...NORRISTOWN...DOYLESTOWN
355 PM EDT TUE OCT 7 2008

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY. 

CALM WINDS AND MAINLY CLEAR SKIES WILL COMBINE TO ALLOW TEMPERATURES 
TO DROP INTO THE LOWER TO MID 30S LATE TONIGHT OVER NORTH CENTRAL 
NEW JERSEY AND SOUTHEAST PENNSYLVANIA, ESPECIALLY OVER LOCATIONS 
WELL REMOVED FROM THE URBANIZED AREAS NEAR THE INTERSTATE 95 
CORRIDOR. THAT SHOULD GENERATE AREAS OF FROST. 

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR 
PLANTS MAY BE KILLED IF LEFT UNCOVERED. PEOPLE SHOULD TAKE THE 
APPROPRIATE ACTIONS OR PRECAUTIONS. 

$$

NJZ020>022-027-081200-
/O.NEW.KPHI.FR.Y.0006.081008T0600Z-081008T1200Z/
OCEAN-CUMBERLAND-ATLANTIC-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...JACKSON...MILLVILLE...HAMMONTON...
WHARTON STATE FOREST
355 PM EDT TUE OCT 7 2008

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT WEDNESDAY. 

CALM WINDS AND CLEAR SKIES WILL COMBINE TO ALLOW TEMPERATURES TO 
DROP INTO THE LOWER TO MID 30S LATE TONIGHT OVER SOUTHEASTERN NEW 
JERSEY, ESPECIALLY IN AND AROUND THE PINE BARRENS. THAT SHOULD 
GENERATE AREAS OF FROST. 

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR 
PLANTS MAY BE KILLED IF LEFT UNCOVERED. PEOPLE SHOULD TAKE THE 
APPROPRIATE ACTIONS OR PRECAUTIONS. 

$$

MPD
1 follow-up statement
000 
WWUS71 KPHI 080826
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
426 AM EDT WED OCT 8 2008

NJZ007>010-020>022-027-PAZ060>062-067>069-080930-
/O.CAN.KPHI.FR.Y.0006.000000T0000Z-081008T1200Z/
WARREN-MORRIS-HUNTERDON-SOMERSET-OCEAN-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...JACKSON...MILLVILLE...HAMMONTON...
WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON...
WEST CHESTER...NORRISTOWN...DOYLESTOWN
426 AM EDT WED OCT 8 2008

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
FROST ADVISORY. 

THE ARRIVAL OF HIGH CLOUDINESS HAS KEPT TEMPERATURES HIGHER THAN
EARLIER ANTICIPATED ACROSS MANY AREAS, THEREFORE A WIDESPREAD FROST
IS NO LONGER EXPECTED EARLY THIS MORNING. AS A RESULT, THE FROST
ADVISORY HAS BEEN CANCELLED.

$$

GORSE

Nearby

Frost Advisories in New Jersey, 2008Frost Advisories in Pennsylvania, 2008Every frost advisory in 2008

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.