Alert archive / Pennsylvania / Frost Advisories in 2012

Frost Advisory 13, NWS State College, PA

October 12, 201214 counties in Pennsylvania

NWS State College, PA issued this frost advisory at Oct 12, 2012, 4:25 AM EDT for 14 counties in Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Oct 12, 2012, 4:25 AM EDT (08:25 UTC)
Expired
Oct 12, 2012, 7:47 AM EDT
In force
3 hr
Issued by
NWS State College, PA

Counties Adams County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Union County, PA, York County, PA

The radar

The State College radar (KCCX), 110 km from the middle of the area, began a volume at 08:30 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 8.4 hours before the alert went out and 180 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 00:00Z on 2012-10-12Temperature 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 00:00Z on 2012-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 square meters per square second.19395878Sfc1 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
1693 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
205 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.

314 
WWUS71 KCTP 120825
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
425 AM EDT FRI OCT 12 2012

...COLD HIGH PRESSURE BUILDS INTO THE AREA TODAY AND THROUGH FRIDAY
NIGHT INTO EARLY SATURDAY. THIS WILL CAUSE TEMPERATURES TO FALL INTO
THE MID AND UPPER 20S ACROSS THE CENTRAL AND NORTHERN
MOUNTAINS...AND LOWER 30S ACROSS THE LOWER SUSQUEHANNA VALLEY.

PAZ028-049>053-056>059-063>066-121630-
/O.NEW.KCTP.FR.Y.0013.121012T0825Z-121012T1200Z/
/O.CON.KCTP.FZ.A.0012.121013T0600Z-121013T1300Z/
JUNIATA-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-
DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...MIFFLINTOWN...LEWISBURG...SELINSGROVE...
DANVILLE...SUNBURY...SHAMOKIN...BLOOMSBURG...BERWICK...NEWPORT...
HARRISBURG...HERSHEY...POTTSVILLE...LEBANON...CARLISLE...
GETTYSBURG...YORK...LANCASTER
425 AM EDT FRI OCT 12 2012

...FROST ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM EDT THIS MORNING. 

* TEMPERATURES...IN THE MID TO UPPER 30S.

* TIMING...LATE FRIDAY NIGHT THROUGH EARLY SATURDAY MORNING.

* IMPACTS...SENSITIVE PLANTS WILL LIKELY BE DAMAGED OR KILLED IF 
  NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD DAMAGE SENSITIVE PLANTS AND CROPS.

A FROST ADVISORY IS ISSUED WHEN WIDESPREAD FROST IS EXPECTED TO
DEVELOP DURING THE GROWING SEASON. THOSE WITH AGRICULTURAL OR
GARDENING INTERESTS IN THE ADVISORY AREA SHOULD HARVEST OR
PROTECT SENSITIVE PLANTS AND CROPS. POTTED PLANTS NORMALLY LEFT
OUTDOORS SHOULD BE COVERED OR BROUGHT INSIDE.

&&

$$

PAZ010>012-017>019-025>027-034>037-041-045-046-121630-
/O.CON.KCTP.FZ.A.0012.121013T0600Z-121013T1300Z/
ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE-
SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-BEDFORD-FULTON-FRANKLIN-
TIOGA-NORTHERN LYCOMING-SOUTHERN CLINTON-SOUTHERN LYCOMING-
INCLUDING THE CITIES OF...ST. MARYS...RIDGWAY...EMPORIUM...
RENOVO...DUBOIS...CLEARFIELD...PHILIPSBURG...STATE COLLEGE...
ALTOONA...HUNTINGDON...MOUNT UNION...LEWISTOWN...BEDFORD...
MCCONNELLSBURG...CHAMBERSBURG...MANSFIELD...WELLSBORO...
TROUT RUN...LOCK HAVEN...WILLIAMSPORT
425 AM EDT FRI OCT 12 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...

* TEMPERATURES...IN THE UPPER 20S.

* TIMING...LATE FRIDAY NIGHT THROUGH EARLY SATURDAY MORNING.

* IMPACTS...SENSITIVE PLANTS WILL LIKELY BE DAMAGED OR KILLED IF 
  NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD DAMAGE SENSITIVE PLANTS AND CROPS.

&&

$$
1 follow-up statement
436 
WWUS71 KCTP 121147
NPWCTP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
747 AM EDT FRI OCT 12 2012

...COLD HIGH PRESSURE BUILDS INTO THE AREA TODAY AND TONIGHT.
THIS WILL CAUSE TEMPERATURES TO FALL INTO THE MID AND UPPER 20S
ACROSS THE CENTRAL AND NORTHERN MOUNTAINS...AND LOWER 30S ACROSS
THE LOWER SUSQUEHANNA VALLEY.

PAZ028-049>053-056>059-063>066-122000-
/O.CAN.KCTP.FR.Y.0013.000000T0000Z-121012T1200Z/
/O.CON.KCTP.FZ.A.0012.121013T0600Z-121013T1300Z/
JUNIATA-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-
DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
INCLUDING THE CITIES OF...MIFFLINTOWN...LEWISBURG...SELINSGROVE...
DANVILLE...SUNBURY...SHAMOKIN...BLOOMSBURG...BERWICK...NEWPORT...
HARRISBURG...HERSHEY...POTTSVILLE...LEBANON...CARLISLE...
GETTYSBURG...YORK...LANCASTER
747 AM EDT FRI OCT 12 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...
...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS CANCELLED THE
FROST ADVISORY. 

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

* TIMING...LATE FRIDAY NIGHT THROUGH EARLY SATURDAY MORNING.

* IMPACTS...SENSITIVE PLANTS WILL LIKELY BE DAMAGED OR KILLED IF 
  NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD DAMAGE SENSITIVE PLANTS AND CROPS.

&&

$$

PAZ010>012-017>019-025>027-034>037-041-045-046-122000-
/O.CON.KCTP.FZ.A.0012.121013T0600Z-121013T1300Z/
ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE-
SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-BEDFORD-FULTON-FRANKLIN-
TIOGA-NORTHERN LYCOMING-SOUTHERN CLINTON-SOUTHERN LYCOMING-
INCLUDING THE CITIES OF...ST. MARYS...RIDGWAY...EMPORIUM...
RENOVO...DUBOIS...CLEARFIELD...PHILIPSBURG...STATE COLLEGE...
ALTOONA...HUNTINGDON...MOUNT UNION...LEWISTOWN...BEDFORD...
MCCONNELLSBURG...CHAMBERSBURG...MANSFIELD...WELLSBORO...
TROUT RUN...LOCK HAVEN...WILLIAMSPORT
747 AM EDT FRI OCT 12 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...

* TEMPERATURES...IN THE UPPER 20S.

* TIMING...LATE FRIDAY NIGHT THROUGH EARLY SATURDAY MORNING.

* IMPACTS...SENSITIVE PLANTS WILL LIKELY BE DAMAGED OR KILLED IF 
  NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD DAMAGE SENSITIVE PLANTS AND CROPS.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 10:15 AM EDTFreeze WarningCTPAdams, Bedford, Blair, Cameron, Centre, Clearfield and 22 more22 hr

Nearby

Frost Advisories in Pennsylvania, 2012Every frost advisory 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.