Alert archive / New Jersey / Freeze Warnings in 2008

Freeze Warning 1, NWS Philadelphia/Mount Holly

April 15, 2008Caroline County, Queen Anne's County, Maryland; 8 counties in New Jersey; Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this freeze warning at Apr 15, 2008, 3:15 PM EDT for Caroline County, Queen Anne's County, Maryland; 8 counties in New Jersey; Kent County, Sussex County, Delaware. It took effect at Apr 16, 2008, 3:00 AM EDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 15, 2008, 3:15 PM EDT (19:15 UTC)
In effect from
Apr 16, 2008, 3:00 AM EDT
Expired
Apr 16, 2008, 7:47 AM EDT
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Atlantic County, NJ, Burlington County, NJ, Cumberland County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 19:19 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, 7.3 hours before the alert went out and 98 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 2008-04-15Temperature 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, Phillips Aaf/Abe, MD at 12:00Z on 2008-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
1886 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
16 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 151915
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
315 PM EDT TUE APR 15 2008

...A COLD OVERNIGHT IN STORE FOR THE REGION...

.A LARGE AREA OF HIGH PRESSURE WILL BUILD OVER OUR REGION TONIGHT,
ALLOWING FOR LIGHT WINDS AND A CLEAR SKY. THESE CONDITIONS,
COUPLED WITH A DRY AIR MASS, WILL RESULT IN AREAS OF NEAR
FREEZING AND EVEN SUB-FREEZING TEMPERATURES EARLY WEDNESDAY
MORNING.

NJZ009-010-012-013-015-PAZ067>069-161000-
/O.NEW.KPHI.FZ.W.0001.080416T0700Z-080416T1200Z/
HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-MERCER-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...WEST CHESTER...NORRISTOWN...
DOYLESTOWN
315 PM EDT TUE APR 15 2008

...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING, WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY.

THE OFFICIAL START OF THE GROWING SEASON WILL START OFF ON THE
COLD SIDE, AS AIR TEMPERATURES ARE EXPECTED TO DROP TO AROUND 30
DEGREES EARLY WEDNESDAY MORNING. THE COLDEST LOCATIONS WILL BE
AWAY FROM THE MORE URBAN AREAS AND THE DELAWARE RIVER, AND ALSO 
INLAND FROM THE COAST.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE, BRING SENSITIVE PLANTS
INDOORS TO PROTECT THEM FROM THE SUB-FREEZING TEMPERATURES.

$$

DEZ002-003-MDZ015-020-NJZ021-022-027-161000-
/O.NEW.KPHI.FZ.W.0001.080416T0700Z-080416T1200Z/
KENT DE-INLAND SUSSEX-QUEEN ANNES-CAROLINE-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...DOVER...GEORGETOWN...CENTREVILLE...
DENTON...MILLVILLE...HAMMONTON...WHARTON STATE FOREST
315 PM EDT TUE APR 15 2008

...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING, WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY.

THE OFFICIAL START OF THE GROWING SEASON WILL START OFF ON THE
COLD SIDE, AS AIR TEMPERATURES ARE EXPECTED TO DROP TO AROUND
30 DEGREES EARLY WEDNESDAY MORNING. THE COLDEST LOCATIONS WILL BE
INLAND FROM THE COAST AND DELAWARE BAY, AND IN THE PINE BARRENS OF
SOUTHERN NEW JERSEY.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE, BRING SENSITIVE PLANTS
INDOORS TO PROTECT THEM FROM THE SUB-FREEZING TEMPERATURES.

$$

DEZ001-NJZ016>020-023-PAZ070-161000-
/O.NEW.KPHI.FR.Y.0001.080416T0700Z-080416T1200Z/
NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-
CAPE MAY-DELAWARE-
INCLUDING THE CITIES OF...WILMINGTON...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
CAPE MAY COURT HOUSE...MEDIA
315 PM EDT TUE APR 15 2008

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY, WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY.

THE OFFICIAL START OF THE GROWING SEASON WILL START OFF ON THE
COLD SIDE, AS AIR TEMPERATURES ARE EXPECTED TO DROP TO THE LOWER
TO MID 30S EARLY WEDNESDAY MORNING. THE COLDEST LOCATIONS WILL BE
AWAY FROM THE MORE URBAN AREAS AND INLAND FROM THE COAST AND
DELAWARE RIVER.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE, BRING
SENSITIVE PLANTS INDOORS TO PROTECT THEM FROM ANY FROST.

$$

MDZ008-012-019-161000-
/O.NEW.KPHI.FR.Y.0001.080416T0700Z-080416T1200Z/
CECIL-KENT MD-TALBOT-
INCLUDING THE CITIES OF...ELKTON...CHESTERTOWN...EASTON
315 PM EDT TUE APR 15 2008

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY, WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT WEDNESDAY.

THE OFFICIAL START OF THE GROWING SEASON WILL START OFF ON THE
COLD SIDE, AS AIR TEMPERATURES ARE EXPECTED TO DROP, ON AVERAGE,
TO THE LOWER TO MID 30S EARLY WEDNESDAY MORNING. THE COLDEST
LOCATIONS WILL BE INLAND FROM CHESAPEAKE BAY.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE, BRING
SENSITIVE PLANTS INDOORS TO PROTECT THEM FROM ANY FROST.

$$

GORSE
2 follow-up statements
000 
WWUS71 KPHI 160850
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
450 AM EDT WED APR 16 2008

NJZ009-010-012-013-015-PAZ067>069-161200-
/O.CON.KPHI.FZ.W.0001.000000T0000Z-080416T1200Z/
HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-MERCER-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...
NEW BRUNSWICK...FREEHOLD...TRENTON...WEST CHESTER...NORRISTOWN...
DOYLESTOWN
450 AM EDT WED APR 16 2008

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING. 

CLEAR SKIES, DRY AIR, AND LIGHT WINDS ASSOCIATED WITH AN AREA OF
HIGH PRESSURE ACROSS THE REGION HAS ALLOWED FOR TEMPERATURES TO
DROP INTO THE LOW TO MID 30S, AND BELOW FREEZING IN SOME AREAS.
TEMPERATURES WILL CONTINUE TO SLOWLY DROP THROUGH SUNRISE, BUT
RISE QUICKLY ONCE THE SUN COMES UP. THE COLDEST LOCATIONS WILL BE
AWAY FROM THE MORE URBAN AREAS AND THE DELAWARE RIVER, AND ALSO
INLAND FROM THE COAST.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE, BRING SENSITIVE PLANTS INDOORS
TO PROTECT THEM FROM THE SUB-FREEZING TEMPERATURES.

$$

DEZ002-003-MDZ015-020-NJZ021-022-027-161200-
/O.CON.KPHI.FZ.W.0001.000000T0000Z-080416T1200Z/
KENT DE-INLAND SUSSEX-QUEEN ANNES-CAROLINE-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...DOVER...GEORGETOWN...CENTREVILLE...
DENTON...MILLVILLE...HAMMONTON...WHARTON STATE FOREST
450 AM EDT WED APR 16 2008

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING. 

CLEAR SKIES, DRY AIR, AND LIGHT WINDS ASSOCIATED WITH AN AREA OF
HIGH PRESSURE ACROSS THE REGION HAS ALLOWED FOR TEMPERATURES TO
DROP INTO THE LOW TO MID 30S, AND BELOW FREEZING IN SOME AREAS.
TEMPERATURES WILL CONTINUE TO SLOWLY DROP THROUGH SUNRISE, BUT
RISE QUICKLY ONCE THE SUN COMES UP. THE COLDEST LOCATIONS WILL BE
INLAND FROM THE COAST AND DELAWARE BAY, AND IN THE PINE BARRENS OF
SOUTHERN NEW JERSEY.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE, BRING SENSITIVE PLANTS INDOORS
TO PROTECT THEM FROM THE SUB-FREEZING TEMPERATURES.

$$

DEZ001-NJZ016>020-023-PAZ070-161200-
/O.CON.KPHI.FR.Y.0001.000000T0000Z-080416T1200Z/
NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-
CAPE MAY-DELAWARE-
INCLUDING THE CITIES OF...WILMINGTON...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
CAPE MAY COURT HOUSE...MEDIA
450 AM EDT WED APR 16 2008

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING. 

CLEAR SKIES, DRY AIR, AND LIGHT WINDS ASSOCIATED WITH AN AREA OF
HIGH PRESSURE ACROSS THE REGION HAS ALLOWED FOR TEMPERATURES TO
DROP INTO THE LOW TO MID 30S. TEMPERATURES WILL CONTINUE TO SLOWLY 
DROP THROUGH SUNRISE, BUT RISE QUICKLY ONCE THE SUN COMES UP. THE
COLDEST LOCATIONS WILL BE AWAY FROM THE MORE URBAN AREAS AND
INLAND FROM THE COAST AND DELAWARE RIVER.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE, BRING
SENSITIVE PLANTS INDOORS TO PROTECT THEM FROM ANY FROST.

$$

MDZ008-012-019-161200-
/O.CON.KPHI.FR.Y.0001.000000T0000Z-080416T1200Z/
CECIL-KENT MD-TALBOT-
INCLUDING THE CITIES OF...ELKTON...CHESTERTOWN...EASTON
450 AM EDT WED APR 16 2008

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING. 

CLEAR SKIES, DRY AIR, AND LIGHT WINDS ASSOCIATED WITH AN AREA OF
HIGH PRESSURE ACROSS THE REGION HAS ALLOWED FOR TEMPERATURES TO
DROP INTO THE LOW TO MID 30S. TEMPERATURES WILL CONTINUE TO SLOWLY 
DROP THROUGH SUNRISE, BUT RISE QUICKLY ONCE THE SUN COMES UP. THE
COLDEST LOCATIONS WILL BE INLAND FROM CHESAPEAKE BAY.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE, BRING
SENSITIVE PLANTS INDOORS TO PROTECT THEM FROM ANY FROST.

$$
000 
WWUS71 KPHI 161147
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
747 AM EDT WED APR 16 2008


DEZ002-003-MDZ015-020-NJZ009-010-012-013-015-021-022-027-
PAZ067>069-161300-
/O.CAN.KPHI.FZ.W.0001.000000T0000Z-080416T1200Z/
KENT DE-INLAND SUSSEX-QUEEN ANNES-CAROLINE-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-MERCER-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...DOVER...GEORGETOWN...CENTREVILLE...
DENTON...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...
TRENTON...MILLVILLE...HAMMONTON...WHARTON STATE FOREST...
WEST CHESTER...NORRISTOWN...DOYLESTOWN
747 AM EDT WED APR 16 2008

...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
FREEZE WARNING. 

TEMPERATURES HAVE RISEN ABOVE THE FREEZING MARK IN MOST AREAS AND
WILL CONTINUE TO RISE THROUGH THE MORNING. THEREFORE, THE FREEZE
WARNING HAS BEEN CANCELLED.

$$

DEZ001-MDZ008-012-019-NJZ016>020-023-PAZ070-161300-
/O.CAN.KPHI.FR.Y.0001.000000T0000Z-080416T1200Z/
NEW CASTLE-CECIL-KENT MD-TALBOT-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CAPE MAY-DELAWARE-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN...
EASTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...
MOORESTOWN...MOUNT HOLLY...JACKSON...CAPE MAY COURT HOUSE...MEDIA
747 AM EDT WED APR 16 2008

...FROST ADVISORY IS CANCELLED...

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

TEMPERATURES HAVE RISEN INTO THE MID TO UPPER 30S IN MOST AREAS
AND WILL CONTINUE TO RISE THROUGH THE MORNING. THEREFORE, THE
FROST ADVISORY HAS BEEN CANCELLED.

$$

MEOLA

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 3:15 PM EDTFrost AdvisoryPHICecil, Kent, Talbot17 hr

Nearby

Freeze Warnings in New Jersey, 2008Freeze Warnings in Maryland, 2008Freeze Warnings in Delaware, 2008Every freeze warning 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.