Alert archive / New Jersey / Freeze Warnings in 2012

Freeze Warning 3, NWS Philadelphia/Mount Holly

March 29, 20126 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this freeze warning at Mar 29, 2012, 3:29 AM EDT for 6 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania. It took effect at Mar 30, 2012, 3:00 AM EDT. It was in force for 6 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
Mar 29, 2012, 3:29 AM EDT (07:29 UTC)
In effect from
Mar 30, 2012, 3:00 AM EDT
Expired
Mar 30, 2012, 9:00 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 07:28 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, 7.5 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 2012-03-29Temperature 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 00:00Z on 2012-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 296 square meters per square second.1939587897Sfc1 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
1469 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
296 m²/s²
0-3 km storm-relative helicity
335 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.

871 
WWUS71 KPHI 290729
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
329 AM EDT THU MAR 29 2012

NJZ009-020>022-027-PAZ060>062-067>069-292030-
/O.NEW.KPHI.FZ.W.0003.120330T0700Z-120330T1300Z/
HUNTERDON-OCEAN-CUMBERLAND-ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-
LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
329 AM EDT THU MAR 29 2012

...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM EDT FRIDAY.

* TEMPERATURES...IN THE LOWER 30S...WITH SOME UPPER 20S IN THE
  NORMALLY COLDER LOCATIONS LIKE THE PINE BARRENS IN NEW JERSEY.

* IMPACTS...DUE TO AN UNUSUALLY WARM WINTER AND EARLY SPRING... 
  THE GROWING SEASON HAS BEGUN AROUND THE REGION. ANY VEGETATION 
  SUSCEPTIBLE TO FREEZING TEMPERATURES OVER A PERIOD OF THREE OR 
  MORE HOURS WOULD BE AT RISK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
3 follow-up statements
235 
WWUS71 KPHI 291919
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
319 PM EDT THU MAR 29 2012

NJZ010-301300-
/O.EXA.KPHI.FZ.W.0003.120330T0700Z-120330T1300Z/
SOMERSET-
INCLUDING THE CITY OF...SOMERVILLE
319 PM EDT THU MAR 29 2012

...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM EDT FRIDAY.

* TEMPERATURES...IN THE LOWER 30S. 

* IMPACTS...DUE TO AN UNUSUALLY WARM WINTER AND EARLY SPRING...
  THE GROWING SEASON HAS BEGUN AROUND THE REGION. ANY VEGETATION
  SUSCEPTIBLE TO FREEZING TEMPERATURES OVER A PERIOD OF THREE OR
  MORE HOURS WOULD BE AT RISK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE BRING TEMPERATURE SENSITIVE
VEGETATION INDOORS AND PROVIDE PROTECTIVE COVERING FOR OTHERS.

&&

$$

NJZ009-020>022-027-PAZ060>062-067>069-301300-
/O.CON.KPHI.FZ.W.0003.120330T0700Z-120330T1300Z/
HUNTERDON-OCEAN-CUMBERLAND-ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-
LEHIGH-NORTHAMPTON-CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
319 PM EDT THU MAR 29 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM EDT
FRIDAY...

* TEMPERATURES...IN THE LOWER 30S...WITH SOME UPPER 20S IN THE
  NORMALLY COLDER LOCATIONS LIKE THE PINE BARRENS IN NEW JERSEY.
 
* IMPACTS...DUE TO AN UNUSUALLY WARM WINTER AND EARLY SPRING... 
  THE GROWING SEASON HAS BEGUN AROUND THE REGION. ANY VEGETATION 
  SUSCEPTIBLE TO FREEZING TEMPERATURES OVER A PERIOD OF THREE OR 
  MORE HOURS WOULD BE AT RISK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE BRING TEMPERATURE SENSITIVE
VEGETATION INDOORS AND PROVIDE PROTECTIVE COVERING FOR OTHERS.
 
&&

$$
544 
WWUS71 KPHI 300129
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
929 PM EDT THU MAR 29 2012

NJZ009-010-020>022-027-PAZ060>062-067>069-301300-
/O.CON.KPHI.FZ.W.0003.120330T0700Z-120330T1300Z/
HUNTERDON-SOMERSET-OCEAN-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...JACKSON...
MILLVILLE...HAMMONTON...WHARTON STATE FOREST...READING...
ALLENTOWN...BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...
DOYLESTOWN
929 PM EDT THU MAR 29 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM EDT
FRIDAY...

* TEMPERATURES...IN THE LOWER 30S WITH SOME UPPER 20S IN THE
  NORMALLY COLDER LOCATIONS INCLUDING THE PINE BARRENS IN NEW
  JERSEY.

* IMPACTS...DUE TO AN UNUSUALLY WARM WINTER AND EARLY SPRING... 
  THE GROWING SEASON HAS BEGUN AROUND THE REGION. ANY VEGETATION 
  SUSCEPTIBLE TO FREEZING TEMPERATURES OVER A PERIOD OF THREE OR 
  MORE HOURS WOULD BE AT RISK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE BRING TEMPERATURE SENSITIVE
VEGETATION INDOORS AND PROVIDE PROTECTIVE COVERING FOR OTHERS.

&&

$$
879 
WWUS71 KPHI 300733
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
333 AM EDT FRI MAR 30 2012

NJZ009-010-020>022-027-PAZ060>062-067>069-301300-
/O.CON.KPHI.FZ.W.0003.000000T0000Z-120330T1300Z/
HUNTERDON-SOMERSET-OCEAN-CUMBERLAND-ATLANTIC-
SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...JACKSON...
MILLVILLE...HAMMONTON...WHARTON STATE FOREST...READING...
ALLENTOWN...BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...
DOYLESTOWN
333 AM EDT FRI MAR 30 2012

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

* TEMPERATURES...IN THE LOWER 30S WITH SOME UPPER 20S IN THE 
  NORMALLY COLDER LOCATIONS INCLUDING THE PINE BARRENS IN NEW 
  JERSEY. 

* IMPACTS...DUE TO AN UNUSUALLY WARM WINTER AND EARLY SPRING... 
  THE GROWING SEASON HAS BEGUN AROUND THE REGION. ANY VEGETATION 
  SUSCEPTIBLE TO FREEZING TEMPERATURES OVER A PERIOD OF THREE OR 
  MORE HOURS WOULD BE AT RISK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. IF POSSIBLE BRING TEMPERATURE SENSITIVE
VEGETATION INDOORS AND PROVIDE PROTECTIVE COVERING FOR OTHERS.

&&

$$

Nearby

Freeze Warnings in New Jersey, 2012Freeze Warnings in Pennsylvania, 2012Every freeze warning 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.