Alert archive / New Jersey / Freeze Warnings in 2014

Freeze Warning 2, NWS Philadelphia/Mount Holly

April 16, 20144 states

NWS Philadelphia/Mount Holly issued this freeze warning at Apr 16, 2014, 3:02 PM EDT for 4 states. It took effect at Apr 17, 2014, 1:00 AM EDT. It was in force for 7 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 16, 2014, 3:02 PM EDT (19:02 UTC)
In effect from
Apr 17, 2014, 1:00 AM EDT
Expired
Apr 17, 2014, 8:26 AM EDT
In force
7 hr
Issued by
NWS Philadelphia/Mount Holly
All 24 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA

The radar

The Philadelphia radar (KDIX), 81 km from the middle of the area, began a volume at 19:04 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, 7.0 hours before the alert went out and 74 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 2014-04-16Temperature 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 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 2014-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -116 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
1445 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
-116 m²/s²
0-3 km storm-relative helicity
-125 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.

320 
WWUS71 KPHI 161902
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
302 PM EDT WED APR 16 2014

DEZ001>003-MDZ008-012-015-019-020-NJZ012-013-015>023-027-PAZ060-
070-101>104-106-170900-
/O.UPG.KPHI.FZ.A.0002.140417T0400Z-140417T1300Z/
/O.NEW.KPHI.FZ.W.0002.140417T0500Z-140417T1300Z/
NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-
CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-
SOUTHEASTERN BURLINGTON-BERKS-DELAWARE-WESTERN CHESTER-
EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-LOWER BUCKS-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON...
NEW BRUNSWICK...FREEHOLD...TRENTON...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE...
WHARTON STATE FOREST...READING...MEDIA...HONEY BROOK...OXFORD...
WEST CHESTER...KENNET SQUARE...COLLEGEVILLE...POTTSTOWN...
NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN
302 PM EDT WED APR 16 2014

...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM EDT THURSDAY. THE
FREEZE WATCH IS NO LONGER IN EFFECT.

* TEMPERATURES...OVERNIGHT TEMPERATURES ARE EXPECTED TO FALL INTO
  THE UPPER 20S AND LOWER 30S.

* TIMING...FREEZING CONDITIONS ARE EXPECTED TO OCCUR DURING THE
  EARLY MORNING HOURS AND CONTINUE UNTIL SHORTLY AFTER DAYBREAK ON
  THURSDAY.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OR EARLY-BLOOMING
  VEGETATION AS TEMPERATURES DROP TO OR BELOW FREEZING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$
2 follow-up statements
250 
WWUS71 KPHI 170735
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
335 AM EDT THU APR 17 2014

NJZ012-013-015-017>022-027-PAZ060-101>103-106-171545-
/O.NEW.KPHI.FZ.A.0003.140418T0500Z-140418T1200Z/
/O.CON.KPHI.FZ.W.0002.000000T0000Z-140417T1300Z/
MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-BERKS-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-LOWER BUCKS-
INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON...
GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...
JACKSON...MILLVILLE...HAMMONTON...WHARTON STATE FOREST...
READING...HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE...
COLLEGEVILLE...POTTSTOWN...MORRISVILLE...DOYLESTOWN
335 AM EDT THU APR 17 2014

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
MORNING.

* LOCATIONS...PORTIONS OF SOUTHEASTERN PENNSYLVANIA AND INTERIOR
  SECTIONS OF SOUTHERN AND CENTRAL NEW JERSEY.

* TEMPERATURES...VARIABLE IN THE UPPER 20S TO LOWER 30S THIS
  MORNING AND MOSTLY IN THE LOWER TO MID 30S FRIDAY MORNING.

* TIMING...AREAS OF FREEZING CONDITIONS ARE EXPECTED TO CONTINUE
  UNTIL SHORTLY AFTER DAYBREAK TODAY. ANOTHER PERIOD OF FROST OR
  FREEZING TEMPERATURES IS POSSIBLE EARLY FRIDAY MORNING. 

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OR EARLY-BLOOMING 
  VEGETATION AS TEMPERATURES DROP TO OR BELOW FREEZING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY THIS MORNING. THESE CONDITIONS WILL KILL CROPS
AND OTHER SENSITIVE VEGETATION.

A FREEZE WATCH FOR EARLY FRIDAY MORNING MEANS SUB-FREEZING
TEMPERATURES ARE AGAIN POSSIBLE. THESE CONDITIONS COULD KILL
CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

DEZ001>003-MDZ008-012-015-019-020-NJZ016-023-PAZ070-104-171300-
/O.CON.KPHI.FZ.W.0002.000000T0000Z-140417T1300Z/
NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-SALEM-CAPE MAY-DELAWARE-EASTERN MONTGOMERY-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON...
PENNSVILLE...CAPE MAY COURT HOUSE...MEDIA...NORRISTOWN...LANSDALE
335 AM EDT THU APR 17 2014

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...

* TEMPERATURES...VARIABLE MOSTLY IN THE LOWER 30S.

* TIMING...AREAS OF FREEZING CONDITIONS HAVE OCCURRED AND MAY
  REOCCUR EARLY THIS MORNING IF WINDS BECOME NEARLY CALM.   

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OR EARLY-BLOOMING 
  VEGETATION AS TEMPERATURES DROP TO OR BELOW FREEZING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$
270 
WWUS71 KPHI 171226
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
826 AM EDT THU APR 17 2014

NJZ012-013-015-017>022-027-PAZ060-101>103-106-172030-
/O.CAN.KPHI.FZ.W.0002.000000T0000Z-140417T1300Z/
/O.CON.KPHI.FZ.A.0003.140418T0500Z-140418T1200Z/
MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-BERKS-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-LOWER BUCKS-
INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON...
GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...
JACKSON...MILLVILLE...HAMMONTON...WHARTON STATE FOREST...
READING...HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE...
COLLEGEVILLE...POTTSTOWN...MORRISVILLE...DOYLESTOWN
826 AM EDT THU APR 17 2014

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
FRIDAY MORNING...
...FREEZE WARNING IS CANCELLED FOR THIS MORNING...

THE FREEZE WATCH FOR TONIGHT REMAINS IN EFFECT.

* LOCATIONS...PORTIONS OF SOUTHEASTERN PENNSYLVANIA AND INTERIOR 
  SECTIONS OF SOUTHERN AND CENTRAL NEW JERSEY.

* TEMPERATURES...AVERAGING IN THE LOWER 30S TONIGHT.

* TIMING...ANOTHER PERIOD OF FROST OR FREEZING TEMPERATURES IS
  POSSIBLE EARLY FRIDAY MORNING.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OR EARLY-BLOOMING 
  VEGETATION AS TEMPERATURES DROP TO OR BELOW FREEZING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
 
A FREEZE WATCH FOR EARLY FRIDAY MORNING MEANS SUB-FREEZING
TEMPERATURES ARE AGAIN POSSIBLE. THESE CONDITIONS COULD KILL
CROPS AND OTHER SENSITIVE VEGETATION.
 
&&

$$

DEZ001>003-MDZ008-012-015-019-020-NJZ016-023-PAZ070-104-171330-
/O.CAN.KPHI.FZ.W.0002.000000T0000Z-140417T1300Z/
NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-SALEM-CAPE MAY-DELAWARE-EASTERN MONTGOMERY-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON...
PENNSVILLE...CAPE MAY COURT HOUSE...MEDIA...NORRISTOWN...LANSDALE
826 AM EDT THU APR 17 2014

...FREEZE WARNING IS CANCELLED...

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

TEMPERATURES HAVE RISEN ABOVE FREEZING IN ALL AREAS.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 8:50 PM EDTAreal Flood WarningPHIMontgomery6 hr
Apr 15, 10:13 PM EDTAreal Flood WarningPHISomerset6 hr
Apr 16, 10:14 AM EDTSmall Craft AdvisoryPHI4 hr
Apr 16, 2:03 PM EDTSmall Craft AdvisoryPHI37 hr

Nearby

Freeze Warnings in New Jersey, 2014Freeze Warnings in Pennsylvania, 2014Freeze Warnings in Maryland, 2014Every freeze warning in 2014

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.