Alert archive / Pennsylvania / Freeze Warnings in 2012

Freeze Warning 2, NWS State College, PA

March 29, 201211 counties in Pennsylvania

NWS State College, PA issued this freeze warning at Mar 29, 2012, 2:17 PM EDT for 11 counties in 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, 2:17 PM EDT (18:17 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 State College, PA

Counties Adams County, PA, Bedford County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Lancaster County, PA, Lebanon County, PA, Perry County, PA, Somerset County, PA, York County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.3 hours before the alert went out and 127 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, Washington/Dulle, VA at 12:00Z 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, Washington/Dulle, VA at 12:00Z on 2012-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
1618 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
89 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.

701 
WWUS71 KCTP 291817
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
217 PM EDT THU MAR 29 2012

.A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE STATE TONIGHT...
BRINGING CLEARING SKIES...DIMINISHING WINDS AND COLD
TEMPERATURES.

PAZ033>036-056-057-059-063>066-300230-
/O.UPG.KCTP.FZ.A.0002.120330T0700Z-120330T1300Z/
/O.NEW.KCTP.FZ.W.0002.120330T0700Z-120330T1300Z/
SOMERSET-BEDFORD-FULTON-FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...SOMERSET...BEDFORD...MCCONNELLSBURG...
CHAMBERSBURG...NEWPORT...HARRISBURG...HERSHEY...LEBANON...
CARLISLE...GETTYSBURG...YORK...LANCASTER
217 PM EDT THU MAR 29 2012

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

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM EDT FRIDAY. THE
FREEZE WATCH IS NO LONGER IN EFFECT. 

* TEMPERATURES...LOWS GENERALLY IN THE LOWER 30S. TEMPERATURES MAY
  DIP TO THE UPPER 20S IN OUTLYING AREAS...BUT HOLD IN THE MID
  30S IN THE CITIES.

* TIMING...EARLY FRIDAY MORNING.

* IMPACTS...ANY TENDER VEGETATION COULD BE DAMAGED IF NOT
  PROTECTED OR BROUGHT INDOORS.

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 HARVEST OR
PROTECT TENDER VEGETATION. POTTED PLANTS NORMALLY LEFT OUTDOORS
SHOULD BE COVERED OR BROUGHT INSIDE.

&&

$$

DANGELO
3 follow-up statements
002 
WWUS71 KCTP 300203
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1003 PM EDT THU MAR 29 2012

.A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE STATE TONIGHT...
BRINGING CLEARING SKIES...DIMINISHING WINDS AND COLD
TEMPERATURES.

PAZ033>036-056-057-059-063>066-301300-
/O.CON.KCTP.FZ.W.0002.120330T0700Z-120330T1300Z/
SOMERSET-BEDFORD-FULTON-FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...SOMERSET...BEDFORD...MCCONNELLSBURG...
CHAMBERSBURG...NEWPORT...HARRISBURG...HERSHEY...LEBANON...
CARLISLE...GETTYSBURG...YORK...LANCASTER
1003 PM EDT THU MAR 29 2012

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

* TEMPERATURES...LOWS GENERALLY IN THE LOWER 30S. TEMPERATURES 
  MAY DIP TO THE UPPER 20S IN OUTLYING AREAS...BUT HOLD IN THE 
  MID 30S IN THE CITIES. 

* TIMING...EARLY FRIDAY MORNING.

* IMPACTS...ANY TENDER VEGETATION COULD BE DAMAGED IF NOT 
  PROTECTED OR BROUGHT INDOORS. 

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 HARVEST OR
PROTECT TENDER VEGETATION. POTTED PLANTS NORMALLY LEFT OUTDOORS
SHOULD BE COVERED OR BROUGHT INSIDE.

&&

$$
416 
WWUS71 KCTP 300748
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
348 AM EDT FRI MAR 30 2012

.A RIDGE OF HIGH PRESSURE WILL SLIDE EAST ACROSS THE STATE EARLY
TODAY...BRINGING MAINLY CLEAR SKIES...LIGHT WINDS...AND COLD
TEMPERATURES JUST BELOW THE FREEZING MARK.

PAZ033>036-056-057-059-063>066-301300-
/O.CON.KCTP.FZ.W.0002.000000T0000Z-120330T1300Z/
SOMERSET-BEDFORD-FULTON-FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...SOMERSET...BEDFORD...MCCONNELLSBURG...
CHAMBERSBURG...NEWPORT...HARRISBURG...HERSHEY...LEBANON...
CARLISLE...GETTYSBURG...YORK...LANCASTER
348 AM EDT FRI MAR 30 2012

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

* TEMPERATURES...LOWS GENERALLY IN THE LOWER 30S. TEMPERATURES 
  MAY DIP TO THE UPPER 20S IN OUTLYING AREAS...BUT HOLD IN THE 
  MID 30S IN THE CITIES. 

* TIMING...EARLY FRIDAY MORNING.

* IMPACTS...ANY TENDER VEGETATION COULD BE DAMAGED IF NOT 
  PROTECTED OR BROUGHT INDOORS. 

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 HARVEST OR
PROTECT TENDER VEGETATION. POTTED PLANTS NORMALLY LEFT OUTDOORS
SHOULD BE COVERED OR BROUGHT INSIDE.

&&

$$

LAMBERT/RADZANOWSKI
519 
WWUS71 KCTP 301303
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
903 AM EDT FRI MAR 30 2012



PAZ033>036-056-057-059-063>066-301415-
/O.EXP.KCTP.FZ.W.0002.000000T0000Z-120330T1300Z/
SOMERSET-BEDFORD-FULTON-FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...SOMERSET...BEDFORD...MCCONNELLSBURG...
CHAMBERSBURG...NEWPORT...HARRISBURG...HERSHEY...LEBANON...
CARLISLE...GETTYSBURG...YORK...LANCASTER
903 AM EDT FRI MAR 30 2012

...FREEZE WARNING HAS EXPIRED...

TEMPERATURES HAVE REBOUNDED ABOVE FREEZING AND WILL CONTINUE TO
RISE INTO THE 50S TODAY.

$$

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 5:34 AM EDTFreeze WatchCTPAdams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more9 hr

Nearby

Freeze 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.