Alert archive / New Jersey / Freeze Warnings in 2012

Freeze Warning 6, NWS Philadelphia/Mount Holly

April 6, 20129 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania; Cecil County, Maryland

NWS Philadelphia/Mount Holly issued this freeze warning at Apr 6, 2012, 8:11 AM EDT for 9 counties in New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania; Cecil County, Maryland. It took effect at Apr 7, 2012, 4:00 AM EDT. It was in force for 4 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 6, 2012, 8:11 AM EDT (12:11 UTC)
In effect from
Apr 7, 2012, 4:00 AM EDT
Expired
Apr 7, 2012, 8:00 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Cecil County, MD, Atlantic County, NJ, Burlington County, NJ, Cumberland County, NJ, Hunterdon County, NJ, Mercer 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), 61 km from the middle of the area, began a volume at 12:10 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 12:00Z, 0.2 hours before the alert went out and 195 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 12:00Z on 2012-04-06Temperature 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 12:00Z on 2012-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 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
1407 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
-78 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.

673 
WWUS71 KPHI 061211
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
811 AM EDT FRI APR 6 2012

 
MDZ008-NJZ007>010-015-020>022-027-PAZ060>062-067>069-070400-
/O.EXP.KPHI.FZ.W.0005.000000T0000Z-120406T1200Z/
/O.NEW.KPHI.FZ.W.0006.120407T0800Z-120407T1200Z/
CECIL-WARREN-MORRIS-HUNTERDON-SOMERSET-MERCER-OCEAN-CUMBERLAND-
ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...ELKTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...TRENTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
811 AM EDT FRI APR 6 2012

...FREEZE WARNING IN EFFECT FROM 4 AM TO 8 AM EDT SATURDAY...
 
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 4 AM TO 8 AM EDT SATURDAY.

* TEMPERATURES...IN THE UPPER 20S AND LOWER 30S.

* TIMING...FREEZING TEMPERATURES WILL OCCUR AGAIN LATE TONIGHT
  INTO EARLY SATURDAY MORNING.

* IMPACTS...FLOWERING FRUIT TREES AND OTHER SENSITIVE VEGETATION
  WILL SUFFER DAMAGE IF NOT PROTECTED...AS TEMPERATURES DROP TO
  JUST BELOW FREEZING EARLY SATURDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL FREEZE WARNINGS ARE POSSIBLE FOR SATURDAY NIGHT AS
WELL. STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR YOUR LOCAL
NEWS SOURCE FOR LATER UPDATES AND STATEMENTS.

A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE
FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL OR
GARDENING INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT
TENDER VEGETATION AND BLOSSOMING FRUIT TREES. POTTED PLANTS
NORMALLY LEFT OUTDOORS SHOULD BE BROUGHT AND KEPT INSIDE UNTIL
THIS RUN OF COLD WEATHER ENDS. THESE CONDITIONS WILL KILL CROPS
AND OTHER SENSITIVE VEGETATION.

&&

$$
3 follow-up statements
700 
WWUS71 KPHI 061852
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
252 PM EDT FRI APR 6 2012

MDZ008-NJZ007>010-015-020>022-027-PAZ060>062-067>069-071200-
/O.CON.KPHI.FZ.W.0006.120407T0800Z-120407T1200Z/
CECIL-WARREN-MORRIS-HUNTERDON-SOMERSET-MERCER-OCEAN-CUMBERLAND-
ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...ELKTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...TRENTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
252 PM EDT FRI APR 6 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 4 AM TO 8 AM EDT
SATURDAY...

* TEMPERATURES...IN THE UPPER 20S AND LOWER 30S.

* TIMING...FREEZING TEMPERATURES WILL OCCUR AGAIN LATE TONIGHT 
  INTO EARLY SATURDAY MORNING. 

* IMPACTS...FLOWERING FRUIT TREES AND OTHER SENSITIVE VEGETATION 
  WILL SUFFER DAMAGE IF NOT PROTECTED...AS TEMPERATURES DROP TO 
  JUST BELOW FREEZING EARLY SATURDAY MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE
FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL OR
GARDENING INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT
TENDER VEGETATION AND BLOSSOMING FRUIT TREES. POTTED PLANTS
NORMALLY LEFT OUTDOORS SHOULD BE BROUGHT AND KEPT INSIDE UNTIL
THIS RUN OF COLD WEATHER ENDS. THESE CONDITIONS WILL KILL CROPS
AND OTHER SENSITIVE VEGETATION.

&&

$$
647 
WWUS71 KPHI 070819
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
419 AM EDT SAT APR 7 2012

MDZ008-NJZ007>010-015-020>022-027-PAZ060>062-067>069-071200-
/O.CON.KPHI.FZ.W.0006.000000T0000Z-120407T1200Z/
CECIL-WARREN-MORRIS-HUNTERDON-SOMERSET-MERCER-OCEAN-CUMBERLAND-
ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...ELKTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...TRENTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
419 AM EDT SAT APR 7 2012

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

* TEMPERATURES...IN THE MID 30S.

* IMPACTS...FLOWERING FRUIT TREES AND OTHER SENSITIVE VEGETATION
  WILL SUFFER DAMAGE IF NOT PROTECTED...AS TEMPERATURES DROP TO
  JUST BELOW FREEZING EARLY THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING IS ISSUED WHEN SUB-FREEZING TEMPERATURES ARE
FORECAST TO THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL OR
GARDENING INTERESTS IN THE WARNED AREA ARE ADVISED TO PROTECT
TENDER VEGETATION AND BLOSSOMING FRUIT TREES. POTTED PLANTS
NORMALLY LEFT OUTDOORS SHOULD BE BROUGHT AND KEPT INSIDE UNTIL
THIS RUN OF COLD WEATHER ENDS. THESE CONDITIONS WILL KILL CROPS
AND OTHER SENSITIVE VEGETATION.

&&

$$
709 
WWUS71 KPHI 071150
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
750 AM EDT SAT APR 7 2012

MDZ008-NJZ007>010-015-020>022-027-PAZ060>062-067>069-071300-
/O.EXP.KPHI.FZ.W.0006.000000T0000Z-120407T1200Z/
CECIL-WARREN-MORRIS-HUNTERDON-SOMERSET-MERCER-OCEAN-CUMBERLAND-
ATLANTIC-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-CHESTER-
MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...ELKTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...TRENTON...JACKSON...MILLVILLE...
HAMMONTON...WHARTON STATE FOREST...READING...ALLENTOWN...
BETHLEHEM...EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
750 AM EDT SAT APR 7 2012

...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING...

TEMPERATURES HAVE RISEN ABOVE FREEZING. THEREFORE, THE NATIONAL
WEATHER SERVICE WILL ALLOW THE FREEZE WARNING TO EXPIRE AT 8 AM.

$$

RPW

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 2:40 AM EDTRed Flag WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more17 hr
Apr 6, 11:20 AM EDTCoastal Flood StatementPHIAtlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean12 hr
Apr 6, 1:21 PM EDTSmall Craft AdvisoryPHI26 hr
Apr 6, 3:10 PM EDTFire Weather WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more13 hr
Apr 6, 3:46 PM EDTSmall Craft AdvisoryPHI24 hr
Apr 6, 7:56 PM EDTRed Flag WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more24 hr

Nearby

Freeze Warnings in New Jersey, 2012Freeze Warnings in Pennsylvania, 2012Freeze Warnings in Maryland, 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.