Alert archive / Pennsylvania / Winter Storm Warnings in 2007

Winter Storm Warning 5, NWS State College, PA

December 12, 200725 counties in Pennsylvania

NWS State College, PA issued this winter storm warning at Dec 12, 2007, 7:57 PM EST for 25 counties in Pennsylvania. It took effect at Dec 13, 2007, 4:00 AM EST. It was in force for 14 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
Dec 12, 2007, 7:57 PM EST (00:57 UTC)
In effect from
Dec 13, 2007, 4:00 AM EST
Expired
Dec 13, 2007, 6:12 PM EST
In force
14 hr
Issued by
NWS State College, PA
All 25 counties

Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Clinton County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Perry County, PA, Potter County, PA, Somerset County, PA, Sullivan County, PA, Tioga County, PA, Warren County, PA, York County, PA

The radar

The State College radar (KCCX), 36 km from the middle of the area, began a volume at 01:01 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, 1.0 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, Washington/Dulle, VA at 00:00Z on 2007-12-13Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2007-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -133 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
1201 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
-133 m²/s²
0-3 km storm-relative helicity
162 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.

000 
WWUS41 KCTP 130057
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
757 PM EST WED DEC 12 2007

...SIGNIFICANT SNOW AND ICE EXPECTED ON THURSDAY...

.A LOW PRESSURE SYSTEM WILL MOVE NORTHEAST FROM THE TENNESSEE
VALLEY AND INTO THE SOUTHERN MID-ATLANTIC STATES ON THURSDAY.
HEAVY SNOW IS LIKELY OVER THE NORTHERN MOUNTAINS OF PENNSYLVANIA...
WITH A MIXTURE OF SLEET AND SNOW BETWEEN INTERSTATE 80 AND THE
TURNPIKE...TRANSITIONING TO A SLOPPY COMBINATION OF SNOW AND
SLEET CHANGING TO FREEZING RAIN SOUTH OF THE TURNPIKE. TRAVEL WILL
BE SIGNIFICANTLY IMPACTED BEGINNING EARLY THURSDAY MORNING AND
CONTINUING THROUGH THE LATE AFTERNOON.

PAZ033-130900-
/O.UPG.KCTP.WW.Y.0012.071213T0900Z-071214T0300Z/
/O.NEW.KCTP.WS.W.0005.071213T0900Z-071214T0300Z/
SOMERSET-
757 PM EST WED DEC 12 2007

...WINTER STORM WARNING IN EFFECT FROM 4 AM TO 10 PM EST
THURSDAY...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 4 AM TO 10 PM EST
THURSDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. 

A WINTRY MIXTURE OF SNOW AND SLEET WILL OVERSPREAD THE REGION
BETWEEN 4 AM AND 5 AM THURSDAY...AND INCREASE IN INTENSITY
THROUGH THE LATE MORNING AND EARLY AFTERNOON HOURS BEFORE TAPERING
OFF TO FREEZING DRIZZLE BY LATE IN THE DAY.

SNOW ACCUMULATIONS DURING THE FIRST SEVERAL HOURS OF THE STORM ARE
EXPECTED TO RANGE BETWEEN 1 AND 3 INCHES BEFORE THE CHANGEOVER TO
MAINLY SLEET AND FREEZING FROM LATE MORNING ON. LOCALLY UP TO 4
INCHES COULD FALL PRIOR TO MIXING WITH SLEET AND FREEZING RAIN 
ACROSS THE NORTHEAST PART OF SOMERSET COUNTY...NEAR THE TOWNS OF
WINDBER...CENTRAL CITY AND OGLETOWN.

THE FREEZING RAIN WILL RESULT IN AN ICE ACCUMULATION OF BETWEEN
ONE QUARTER TO ONE HALF OF AN INCH. THE GREATEST THREAT FOR HEAVY
FREEZING RAIN WILL BE ACROSS THE SOUTHERN AND WESTERN PORTIONS OF
SOMERSET COUNTY. THIS AMOUNT OF ICE COULD LEAD TO DOWNED TREE
LIMBS AND SCATTERED POWER OUTAGES.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ004>006-010>012-037-041-042-130900-
/O.UPG.KCTP.WS.A.0009.071213T1100Z-071214T0300Z/
/O.NEW.KCTP.WS.W.0005.071213T1100Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
757 PM EST WED DEC 12 2007

...WINTER STORM WARNING IN EFFECT FROM 6 AM TO 10 PM EST
THURSDAY...
...WINTER STORM WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 AM TO 10 PM EST
THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

SNOW WILL OVERSPREAD THE REGION FROM THE SOUTHWEST AROUND SUNRISE
THURSDAY...AND INCREASE IN INTENSITY...BECOMING HEAVY AT TIMES 
THROUGH THE LATE MORNING AND EARLY AFTERNOON HOURS BEFORE
GRADUALLY TAPERING OFF TO INTERMITTENT LIGHT SNOW OR FREEZING
DRIZZLE THURSDAY NIGHT. THE SNOW MAY ALSO MIX WITH SLEET AT TIMES
DURING THE DAY.

SNOW AMOUNTS OF 5 TO 8 INCHES ARE LIKELY BY LATE THURSDAY...WITH
THE HIGHER AMOUNTS EXPECTED NEAR AND TO THE NORTH OF ROUTE
6...WHERE LESS SLEET IS EXPECTED. ACROSS THE CENTRAL
MOUNTAINS...THE MIXTURE WITH SLEET WILL IS EXPECTED TO CUT DOWN ON
ACCUMULATIONS...BUT LESS OF A MIX WITH SLEET WOULD RESULT IN
SNOW AMOUNTS EXCEEDING 6 INCHES.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ034>036-064>066-130900-
/O.CON.KCTP.WW.Y.0012.071213T0900Z-071214T0300Z/
BEDFORD-FULTON-FRANKLIN-ADAMS-YORK-LANCASTER-
757 PM EST WED DEC 12 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 PM
EST THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 PM
EST THURSDAY. 

A WINTRY MIXTURE OF SNOW AND SLEET WILL OVERSPREAD THE REGION
BETWEEN 4 AM AND 6 AM THURSDAY...AND INCREASE IN INTENSITY THROUGH
THE LATE MORNING AND AFTERNOON HOURS BEFORE GRADUALLY TAPERING OFF
TO LIGHT DRIZZLE OR AREAS OF FREEZING DRIZZLE LATE THURSDAY.
ROADWAYS WILL BE QUICKLY IMPACTED...AS AIR AND SURFACE
TEMPERATURES QUICKLY FALL INTO THE UPPER 20S TO LOWER 30S AT THE
ONSET OF THE PRECIPITATION AND REMAIN THERE THROUGHOUT THE DAY.

THE MIXTURE OF SNOW AND SLEET WILL ACCUMULATE UP TO 2 INCHES IN
THE MORNING BEFORE MIXING WITH AND POSSIBLY CHANGE TO FREEZING
RAIN BY AFTERNOON. ALTHOUGH EXCESSIVE ICING IS NOT ANTICIPATED AT
THIS TIME...BETWEEN ONE...AND TWO TENTHS OF AN INCH OF ICE ACCRETION
IS LIKELY BY THURSDAY AFTERNOON...MAINLY SOUTH OF THE TURNPIKE.
PRECIPITATION WILL QUICKLY WIND DOWN AFTER 3PM THURSDAY AFTERNOON
AND FALL EITHER AS DRIZZLE OR FREEZING DRIZZLE WITH TEMPERATURES
SLOWLY RISING TO BETWEEN 32 AND 35 DEGREES.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

PAZ017>019-024>028-045-046-049>053-056>059-063-130900-
/O.CON.KCTP.WW.Y.0012.071213T1000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-
HUNTINGDON-MIFFLIN-JUNIATA-SOUTHERN CLINTON-SOUTHERN LYCOMING-
UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-
SCHUYLKILL-LEBANON-CUMBERLAND-
757 PM EST WED DEC 12 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TO 10 PM
EST THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TO 10 PM
EST THURSDAY. 

SNOW AND SLEET WILL OVERSPREAD THE REGION AROUND OR SHORTLY AFTER
SUNRISE THURSDAY...AND INCREASE IN INTENSITY THROUGH THE LATE
MORNING AND AFTERNOON HOURS BEFORE GRADUALLY TAPERING OFF THURSDAY
NIGHT. SEVERAL INCHES OF SNOW AND SLEET ACCUMULATION CAN BE
EXPECTED BY EARLY THURSDAY AFTERNOON...PERHAPS ENDING AS A BRIEF
PERIOD OF FREEZING RAIN OR FREEZING DRIZZLE IN SOME AREAS.

SNOW AND SLEET ACCUMULATIONS BETWEEN 3 AND 5 INCHES ARE EXPECTED
IN THE ADVISORY AREA. A CHANGEOVER TO SLEET A FEW HOURS SOONER WOULD
HOLD DOWN THE ACCUMULATIONS BY INCH OR SO. 

TRAVEL WILL QUICKLY BECOME HAZARDOUS THURSDAY MORNING AFTER THE
ONSET OF PRECIPITATION. THE PRECIPITATION WILL TAPER OFF IN MOST
AREAS AFTER 2 PM.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

LAMBERT/RADZANOWSKI/CRUZ
5 follow-up statements
000 
WWUS41 KCTP 130940
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
440 AM EST THU DEC 13 2007

...SIGNIFICANT SNOW AND ICE EXPECTED TODAY...

.A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE MID-ATLANTIC STATES
TODAY. HEAVY SNOW IS LIKELY OVER THE NORTHERN MOUNTAINS OF
PENNSYLVANIA...WITH A MIXTURE OF SLEET AND SNOW BETWEEN
INTERSTATE 80 AND ROUTE 22...AND MAINLY SLEET AND FREEZING RAIN
TO THE SOUTH OF ROUTE 22. TRAVEL WILL BE SIGNIFICANTLY IMPACTED
BEGINNING EARLY THIS MORNING AND CONTINUING THROUGH THE EARLY
EVENING.

PAZ033-131745-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
SOMERSET-
440 AM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

A WINTRY MIX OF SNOW...SLEET AND FREEZING RAIN WILL OVERSPREAD THE
REGION BY SUNRISE. THE PRECIPITATION WILL BECOME MAINLY FREEZING
RAIN BY NOON...AND SHOULD INCREASE IN INTENSITY THROUGH THE LATE
MORNING AND EARLY AFTERNOON HOURS. IT WILL TAPER OFF TO FREEZING
DRIZZLE OR SCATTERED SNOW SHOWERS BY LATE IN THE DAY.

SNOW AND SLEET ACCUMULATIONS DURING THE FIRST SEVERAL HOURS OF
THE STORM ARE EXPECTED TO RANGE BETWEEN 1 AND 2 INCHES BEFORE THE
CHANGEOVER TO MAINLY FREEZING RAIN. 

THE FREEZING RAIN WILL RESULT IN AN ICE ACCUMULATION OF BETWEEN
ONE QUARTER AND ONE HALF OF AN INCH. THIS AMOUNT OF ICE COULD
LEAD TO DOWNED TREE LIMBS AND SCATTERED POWER OUTAGES...ESPECIALLY
AS THE WEST WINDS KICK IN THIS EVENING. 

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ004>006-010>012-037-041-042-131745-
/O.CON.KCTP.WS.W.0005.071213T1100Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
440 AM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW WILL OVERSPREAD THE REGION FROM THE SOUTHWEST EARLY THIS
MORNING...AND INCREASE IN INTENSITY...BECOMING HEAVY AT TIMES
THROUGH THE LATE MORNING AND EARLY AFTERNOON HOURS. IT WILL
TAPER OFF TO INTERMITTENT LIGHT SNOW OR FREEZING DRIZZLE EARLY
TONIGHT. THE SNOW MAY ALSO MIX WITH SLEET AT TIMES DURING THE
DAY.

SNOW AMOUNTS OF 4 TO 8 INCHES ARE LIKELY BY LATE THURSDAY...WITH
THE HIGHER AMOUNTS EXPECTED NEAR COUDERSPORT...WELLSBORO AND
LAPORTE. THE LOWER AMOUNTS WILL OCCUR WHERE MORE SLEET MIXES
IN...WHICH IS EXPECTED TO BE WEST OF BRADFORD...AND SOUTH OF
EMPORIUM AND RENOVO. THIS AMOUNT OF SNOW AND SLEET WILL CREATE
TREACHEROUS TRAVEL CONDITIONS. 

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ034>036-064>066-131745-
/O.CON.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
BEDFORD-FULTON-FRANKLIN-ADAMS-YORK-LANCASTER-
440 AM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

A WINTRY MIXTURE OF SLEET AND FREEZING RAIN WILL OVERSPREAD THE
REGION EARLY THIS MORNING...AND A LITTLE SNOW COULD FALL AS WELL.
THE PRECIPITATION WILL INCREASE IN INTENSITY THROUGH THE LATE
MORNING AND AFTERNOON HOURS...TURNING TO MAINLY FREEZING RAIN
THIS AFTERNOON. IT COULD TURN TO PLAIN RAIN AS SURFACE
TEMPERATURES ARE EXPECTED TO NUDGE JUST ABOVE FREEZING IN MOST
LOCATIONS...ESPECIALLY ALONG THE MASON-DIXON LINE. 

THE MIXTURE OF SNOW AND SLEET WILL ACCUMULATE AN INCH OR SO IN THE
MORNING BEFORE THE CHANGE TO MAINLY FREEZING RAIN. ICE ACCRETIONS
COULD REACH UP TO ONE-QUARTER OF AN INCH IN SPOTS...BUT MOST
LOCATIONS WILL GET LESS OF A GLAZE THAN THAT.

THE PRECIPITATION WILL TAPER OFF TO LIGHT DRIZZLE OR AREAS OF
FREEZING DRIZZLE LATE THURSDAY. 

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

PAZ017>019-024>028-045-046-049>053-056>059-063-131745-
/O.CON.KCTP.WW.Y.0012.071213T1000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-
HUNTINGDON-MIFFLIN-JUNIATA-SOUTHERN CLINTON-SOUTHERN LYCOMING-
UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-
SCHUYLKILL-LEBANON-CUMBERLAND-
440 AM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW AND SLEET WILL OVERSPREAD THE REGION THIS MORNING...AND
INCREASE IN INTENSITY THROUGH THE LATE MORNING AND AFTERNOON
HOURS. SLEET MAY BECOME THE MAIN PRECIPITATION TYPE DURING
MIDDAY...BUT FREEZING RAIN SHOULD ALSO MIX IN LATER
TODAY...ESPECIALLY SOUTH OF STATE COLLEGE AND LEWISTOWN. 
2 TO 4 INCHES OF SNOW AND SLEET CAN BE EXPECTED BY EARLY THURSDAY
AFTERNOON. IN AREAS WHERE MORE SLEET AND FREEZING RAIN FALLS...THE
ACCUMULATIONS WOULD BE LOWER...PERHAPS CONSIDERABLY LOWER.

TRAVEL WILL QUICKLY BECOME HAZARDOUS THIS MORNING...AS THE HEAVY
MIX OF PRECIPITATION WILL CREATE ICY ROADS. THE PRECIPITATION
WILL TAPER OFF LATE THIS AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

DANGELO/MARTIN
000 
WWUS41 KCTP 131341
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
841 AM EST THU DEC 13 2007

...SIGNIFICANT SNOW AND ICE EXPECTED TODAY...

.A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE MID-ATLANTIC STATES
TODAY. HEAVY SNOW IS LIKELY OVER THE NORTHERN MOUNTAINS OF
PENNSYLVANIA...WITH A MIXTURE OF SLEET AND SNOW BETWEEN
INTERSTATE 80 AND ROUTE 22...AND MAINLY SLEET AND FREEZING RAIN
TO THE SOUTH OF ROUTE 22. TRAVEL WILL BE SIGNIFICANTLY IMPACTED
BEGINNING EARLY THIS MORNING AND CONTINUING THROUGH THE EARLY
EVENING.

PAZ034>036-064>066-132145-
/O.UPG.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
/O.EXA.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
BEDFORD-FULTON-FRANKLIN-ADAMS-YORK-LANCASTER-
841 AM EST THU DEC 13 2007

...WINTER STORM WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 10 PM EST THIS EVENING.
THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. 

FREEZING RAIN MIXED WITH OCCASIONAL SLEET HAS OVERSPREAD THE
REGION THIS MORNING...FALLING MODERATELY TO HEAVILY AT TIMES. 
WHILE MORE SLEET IS EXPECTED TO MIX IN LATER THIS MORNING...A PERIOD 
OF SIGNIFICANT ICING IS NOW IMMINENT...AND SO THE WINTER WEATHER
ADVISORY HAS BEEN UPGRADED FOR A WINTER STORM WARNING.

THE PRECIPITATION WILL INCREASE IN INTENSITY THROUGH THE LATE
MORNING AND AFTERNOON HOURS...PERHAPS TURNING TO PLAIN RAIN NEAR
THE MARYLAND BORDER AS SURFACE TEMPERATURES APPROACH FREEZING
ALONG THE MASON- DIXON LINE.

ICE ACCRETIONS WILL EXCEED ONE-QUARTER OF AN INCH IN MANY
LOCATIONS. NORTHERN COUNTY LOCATIONS MAY SEE A SLEET ACCUMULATION
OF AROUND ONE INCH BY THIS AFTERNOON AS WELL. 

THE PRECIPITATION WILL TAPER OFF TO LIGHT DRIZZLE OR AREAS OF
FREEZING DRIZZLE LATE TODAY.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ004>006-010>012-033-037-041-042-132145-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-SOMERSET-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
841 AM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

A WINTRY MIX OF SNOW...SLEET AND FREEZING RAIN WILL OVERSPREAD
THE REGION BY SUNRISE. THE PRECIPITATION WILL BECOME MAINLY
FREEZING RAIN BY NOON...AND SHOULD INCREASE IN INTENSITY THROUGH
THE LATE MORNING AND EARLY AFTERNOON HOURS. IT WILL TAPER OFF TO
FREEZING DRIZZLE OR SCATTERED SNOW SHOWERS BY LATE IN THE DAY.

SNOW AND SLEET ACCUMULATIONS DURING THE FIRST SEVERAL HOURS OF
THE STORM ARE EXPECTED TO RANGE BETWEEN 1 AND 2 INCHES BEFORE THE
CHANGEOVER TO MAINLY FREEZING RAIN.

THE FREEZING RAIN WILL RESULT IN AN ICE ACCUMULATION OF BETWEEN
ONE QUARTER AND ONE HALF OF AN INCH. THIS AMOUNT OF ICE COULD
LEAD TO DOWNED TREE LIMBS AND SCATTERED POWER OUTAGES...
ESPECIALLY AS THE WEST WINDS KICK IN THIS EVENING.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ017>019-024>028-045-046-049>053-056>059-063-132145-
/O.CON.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-
HUNTINGDON-MIFFLIN-JUNIATA-SOUTHERN CLINTON-SOUTHERN LYCOMING-
UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-
SCHUYLKILL-LEBANON-CUMBERLAND-
841 AM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW AND SLEET WILL OVERSPREAD THE REGION THIS MORNING...AND
INCREASE IN INTENSITY THROUGH THE LATE MORNING AND AFTERNOON
HOURS. SLEET MAY BECOME THE MAIN PRECIPITATION TYPE DURING
MIDDAY...BUT FREEZING RAIN SHOULD ALSO MIX IN LATER TODAY...
ESPECIALLY SOUTH OF STATE COLLEGE AND LEWISTOWN. 2 TO 4 INCHES OF
SNOW AND SLEET CAN BE EXPECTED BY EARLY THURSDAY AFTERNOON. IN
AREAS WHERE MORE SLEET AND FREEZING RAIN FALLS...THE
ACCUMULATIONS WOULD BE LOWER...PERHAPS CONSIDERABLY LOWER.

TRAVEL WILL QUICKLY BECOME HAZARDOUS THIS MORNING...AS THE HEAVY
MIX OF PRECIPITATION WILL CREATE ICY ROADS. THE PRECIPITATION
WILL TAPER OFF LATE THIS AFTERNOON.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

DEVOIR
000 
WWUS41 KCTP 131558
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1058 AM EST THU DEC 13 2007

...SIGNIFICANT SNOW AND ICE EXPECTED TODAY...

.A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE MID-ATLANTIC STATES
TODAY. HEAVY SNOW IS LIKELY OVER THE NORTHERN MOUNTAINS OF
PENNSYLVANIA...WITH A MIXTURE OF SLEET AND SNOW BETWEEN
INTERSTATE 80 AND ROUTE 22...AND MAINLY SLEET AND FREEZING RAIN
TO THE SOUTH OF ROUTE 22. TRAVEL WILL BE SIGNIFICANTLY IMPACTED
BEGINNING EARLY THIS MORNING AND CONTINUING THROUGH THE EARLY
EVENING.

PAZ024>028-056-057-059-063-140300-
/O.UPG.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
/O.EXA.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-PERRY-DAUPHIN-LEBANON-
CUMBERLAND-
1058 AM EST THU DEC 13 2007

...WINTER STORM WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 10 PM EST THIS EVENING.
THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. 

A MIXTURE OF FREEZING RAIN AND OCCASIONAL SLEET WILL CONTINUE
ACROSS THE AREA THROUGH MID AFTERNOON. SIGNIFICANT ICE
ACCUMULATIONS EXCEEDING ONE QUARTER INCH WILL ACCRETE ON OUTDOOR
OBJECTS AND TREES...ESPECIALLY ACROSS SOUTHERN PORTIONS OF
CAMBRIA...BLAIR...HUNTINGDON...CUMBERLAND...DAUPHIN AND LEBANON
COUNTIES. NORTHERN PORTIONS OF THESE COUNTIES ALONG WITH PERRY...
JUNIATA AND MIFFLIN COUNTIES SHOULD SEE MORE SLEET...WITH ACCUMULATIONS
UP TO 2 OR 3 INCHES IN THOSE AREAS. THE PRECIPITATION WILL TAPER OFF 
LATE THIS AFTERNOON AND EVENING AS A PERIOD OF FREEZING DRIZZLE.

TRAVEL WILL BE HAZARDOUS ON UNTREATED ROADWAYS. THE WEIGHT OF
ACCUMULATED ICE COULD CAUSE TREE BRANCHES AND POWER LINES TO FALL.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ004>006-010>012-037-041-042-140300-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
1058 AM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW WILL CONTINUE...HEAVY AT TIMES THROUGH THE EARLY AFTERNOON
HOURS...BEFORE GRADUALLY TAPERING OFF TO INTERMITTENT LIGHT SNOW OR
FREEZING DRIZZLE THIS EVENING. THE SNOW MAY ALSO MIX WITH SLEET AT
TIMES DURING THE DAY.

SNOW AMOUNTS OF 5 TO 8 INCHES ARE LIKELY BY LATE AFTERNOON...WITH THE
HIGHER AMOUNTS EXPECTED NEAR AND TO THE NORTH OF ROUTE 6...WHERE
LESS SLEET IS EXPECTED. ACROSS THE CENTRAL MOUNTAINS...THE MIXTURE
WITH SLEET WILL IS EXPECTED TO CUT DOWN ON ACCUMULATIONS...BUT
LESS OF A MIX WITH SLEET WOULD RESULT IN SNOW AMOUNTS EXCEEDING 6
INCHES.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ033>036-064>066-140300-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
SOMERSET-BEDFORD-FULTON-FRANKLIN-ADAMS-YORK-LANCASTER-
1058 AM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

FREEZING RAIN AND OCCASIONAL SLEET WILL CONTINUE INTO THIS
AFTERNOON. THE PRECIPITATION MAY EVEN CHANGE TO PLAIN RAIN FOR A
TIME NEAR THE MARYLAND BORDER. SIGNIFICANT ICE ACCUMULATIONS
EXCEEDING ONE QUARTER INCH WILL ACCRETE ON OUTDOOR OBJECTS AND
TREES. THIS AMOUNT OF ICE COULD LEAD TO DOWNED TREE LIMBS AND
SCATTERED POWER OUTAGES...ESPECIALLY AS THE WEST WINDS KICK IN
THIS EVENING. IT WILL TAPER OFF TO FREEZING DRIZZLE OR SCATTERED
SNOW SHOWERS BY LATE IN THE DAY.

TRAVEL WILL REMAIN HAZARDOUS ON UNTREATED ROADWAYS THROUGH THIS
AFTERNOON. THE PRECIPITATION WILL TAPER OFF TO LIGHT FREEZING
DRIZZLE LATE THIS AFTERNOON AND EVENING. 

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ017>019-045-046-049>053-058-140300-
/O.CON.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-SOUTHERN CLINTON-
SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-
SCHUYLKILL-
1058 AM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW AND SLEET WILL CONTINUE INTO THE AFTERNOON HOURS...WITH SLEET 
REMAINING THE MAIN PRECIPITATION TYPE. FREEZING RAIN WILL ALSO BE
MIXED IN AT TIMES...ESPECIALLY SOUTH OF STATE COLLEGE AND
LEWISTOWN. 2 TO 4 INCHES OF SNOW AND SLEET CAN BE EXPECTED BY
EARLY MID AFTERNOON. IN AREAS WHERE MORE SLEET AND FREEZING RAIN
FALLS...THE ACCUMULATIONS WOULD BE LOWER...PERHAPS CONSIDERABLY
LOWER.

TRAVEL WILL REMAIN HAZARDOUS ON UNTREATED ROADWAYS THROUGH THIS
AFTERNOON. THE PRECIPITATION WILL TAPER OFF TO LIGHT FREEZING
DRIZZLE LATE THIS AFTERNOON AND EVENING. 

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

DEVOIR
000 
WWUS41 KCTP 131824
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
124 PM EST THU DEC 13 2007

...SIGNIFICANT SNOW AND ICE EXPECTED TODAY...

.A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE MID-ATLANTIC STATES
TODAY. HEAVY SNOW IS LIKELY OVER THE NORTHERN MOUNTAINS OF
PENNSYLVANIA...WITH A MIXTURE OF SLEET AND SNOW BETWEEN
INTERSTATE 80 AND ROUTE 22...AND MAINLY SLEET AND FREEZING RAIN
TO THE SOUTH OF ROUTE 22. TRAVEL WILL BE SIGNIFICANTLY IMPACTED
THROUGH THE EARLY EVENING.

PAZ004>006-010>012-037-041-042-140300-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
124 PM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW WILL CONTINUE...HEAVY AT TIMES THROUGH THE EARLY AFTERNOON
HOURS...BEFORE GRADUALLY TAPERING OFF TO INTERMITTENT LIGHT SNOW
OR FREEZING DRIZZLE THIS EVENING. THE SNOW MAY ALSO MIX WITH
SLEET AT TIMES DURING THE DAY.

SNOW AMOUNTS OF 5 TO 8 INCHES ARE LIKELY BY LATE AFTERNOON...WITH
THE HIGHER AMOUNTS EXPECTED NEAR AND TO THE NORTH OF ROUTE 6...
WHERE LESS SLEET IS EXPECTED. ACROSS THE CENTRAL MOUNTAINS...THE
MIXTURE WITH SLEET WILL IS EXPECTED TO CUT DOWN ON
ACCUMULATIONS...BUT LESS OF A MIX WITH SLEET WOULD RESULT IN SNOW
AMOUNTS EXCEEDING 6 INCHES.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ024>028-033>036-056-057-059-063>066-140300-
/O.CON.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON-
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
124 PM EST THU DEC 13 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

A MIXTURE OF FREEZING RAIN AND OCCASIONAL SLEET WILL CONTINUE
ACROSS MOST OF THE AREA THROUGH MID AFTERNOON. SIGNIFICANT ICE
ACCUMULATIONS EXCEEDING ONE QUARTER INCH WILL ACCRETE ON OUTDOOR
OBJECTS AND TREES...ESPECIALLY ACROSS SOUTHERN PORTIONS OF
CAMBRIA...BLAIR...HUNTINGDON...CUMBERLAND...DAUPHIN AND LEBANON
COUNTIES. NORTHERN PORTIONS OF THESE COUNTIES ALONG WITH PERRY...
JUNIATA AND MIFFLIN COUNTIES SHOULD SEE MORE SLEET...WITH
ACCUMULATIONS UP TO 2 OR 3 INCHES IN THOSE AREAS. THE
PRECIPITATION WILL TAPER OFF LATE THIS AFTERNOON AND EVENING AS A
PERIOD OF FREEZING DRIZZLE.

SOUTHERN PORTIONS OF YORK AND LANCASTER COUNTIES WILL HAVE A LULL
IN THE PRECIPITATION EARLY THIS AFTERNOON. SHOWERS WILL REDEVELOP
OVER THESE AREAS WITH MAINLY PLAIN RAIN FALLING OVER THE SOUTHERN
HALF OF YORK AND LANCASTER COUNTIES THIS AFTERNOON...WHILE
NORTHERN AREAS CONTINUE TO SEE AREAS OF FREEZING RAIN.

TRAVEL WILL BE HAZARDOUS ON UNTREATED ROADWAYS. THE WEIGHT OF
ACCUMULATED ICE COULD CAUSE TREE BRANCHES AND POWER LINES TO
FALL.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW OR ICE
ARE EXPECTED OR OCCURRING. ANY TRAVEL IS STRONGLY DISCOURAGED.
THOSE WITH TRAVEL PLANS IN THE WARNED AREA ARE ADVISED TO CHOOSE
AN ALTERNATIVE ROUTE...OR SHOULD USE EXTREME CAUTION IF TRAVEL IS
UNAVOIDABLE. CARRY EXTRA SUPPLIES...INCLUDING BLANKETS...FOOD AND
A CELLULAR PHONE...IN CASE YOUR CAR BECOMES STRANDED.

$$

PAZ017>019-045-046-049>053-058-140300-
/O.CON.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-SOUTHERN CLINTON-
SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-
SCHUYLKILL-
124 PM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS
EVENING. 

SNOW AND SLEET WILL CONTINUE INTO THE MID AFTERNOON HOURS...WITH
SLEET REMAINING THE DOMINANT PRECIPITATION TYPE. FREEZING RAIN
WILL ALSO BE MIXED IN AT TIMES...ESPECIALLY SOUTH OF STATE COLLEGE
AND LEWISTOWN. AN ADDITIONAL COATING TO ONE INCH OF ADDITIONAL
INCH OF SNOW AND SLEET CAN IS EXPECTED BY MID AFTERNOON. IN AREAS
WHERE MORE SLEET AND FREEZING RAIN FALLS...THE ACCUMULATIONS WOULD
BE LOWER...PERHAPS CONSIDERABLY LOWER.

TRAVEL WILL REMAIN HAZARDOUS ON UNTREATED ROADWAYS THROUGH THIS
AFTERNOON. THE PRECIPITATION WILL TAPER OFF TO LIGHT FREEZING
DRIZZLE LATE THIS AFTERNOON AND EVENING.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES. MOTORISTS SHOULD BE
ESPECIALLY CAUTIOUS ON BRIDGES AND OVERPASSES...WHERE SLIPPERY
SPOTS DEVELOP FIRST.

$$

DEVOIR
000 
WWUS41 KCTP 132312
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
612 PM EST THU DEC 13 2007


PAZ004>006-010>012-024>028-033>037-041-042-056-057-059-063>066-
140015-
/O.CAN.KCTP.WS.W.0005.000000T0000Z-071214T0300Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CAMBRIA-BLAIR-
HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-
NORTHERN LYCOMING-SULLIVAN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-
YORK-LANCASTER-
612 PM EST THU DEC 13 2007

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS CANCELLED THE
WINTER STORM WARNING. 

WINTRY PRECIPITATION HAS ENDED ACROSS CENTRAL PENNSYLVANIA.
THEREFORE...THE WINTER STORM WARNING IS CANCELLED. 

$$

PAZ017>019-045-046-049>053-058-140015-
/O.CAN.KCTP.WW.Y.0012.000000T0000Z-071214T0300Z/
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-SOUTHERN CLINTON-
SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-
SCHUYLKILL-
612 PM EST THU DEC 13 2007

...WINTER WEATHER ADVISORY IS CANCELLED...

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

WINTRY PRECIPITATION HAS ENDED ACROSS CENTRAL PENNSYLVANIA.
THEREFORE...THE WINTER WEATHER ADVISORY IS CANCELLED. 

$$

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this winter storm warning went out at Dec 12, 7:24 PM EST, 33 minutes earlier.

Area forecast discussion, Dec 12, 7:24 PM EST, 33 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
724 PM EST WED DEC 12 2007

.SYNOPSIS...
COLD FRONT NOW STALLED JUST TO OUR SOUTH. COLD HIGH PRESSURE WILL
BUILD IN ONLY BRIEFLY FROM THE UPPER MIDWEST. LOW PRESSURE WILL
THEN RIDE ALONG THE BAROCLINIC ZONE AND BRING A MESSY WINTRY MIX
OF PRECIP FOR THURSDAY. ANOTHER...MORE SIGNIFICANT...STORM LOOMS
FOR SAT-SUN. NW FLOW SHOULD DOMINATE MON-TUES.

&&

.NEAR TERM /UNTIL 11 PM THIS EVENING/...
SFC HIGH PRESSURE OVER WISCONSIN BUILDING OVERNIGHT. MUCH COLDER
AND DRIER AIR ALOFT ADVECTING ACROSS PA THIS EVENING. SFC
DEWPOINTS NEAR 20 AT KBFD WITH TEMPS ALL ALONG MY NORTHERN TIER
NEAR OR SLIGHTLY BELOW FREEZING CURRENTLY. THIS WILL HELP ACHIEVE
SUB 32-DEGREE SFC AND ABOVE WET BULB TEMPS ON THURSDAY MAKING FOR
A DIFFICULT TRAVEL DAY STATEWIDE.

&&

.SHORT TERM /11 PM THIS EVENING THROUGH 6 PM THURSDAY/...
SREF MEMBERS CONTINUE TO SHOW WIDE RANGE OF PTYPES FROM NORTH TO
SOUTH ACROSS CENTRAL PA. MEAN SREF QPF HAS INCREASED FOR THE
THURSDAY EVENING TO SLIGHTLY OVER .60. SCOURING OF ALL ENSEMBLE
DATA AND DETERMINISTIC RUNS GIVING ME SUB-WARNING CRITERIA
MIXTURE OF SNOW AND SLEET...WITH SOME FREEZING RAIN POSSIBLE
MAINLY SOUTH OF THE TURNPIKE...HAVE THEREFORE GONE WITH WINTER
WEATHER ADVISORIES FROM ROUGHLY DAYBREAK THURSDAY THROUGH THURSDAY
EVENING...WITH SNOW AND SLEET ACCUMULATIONS RANGING FROM 2 TO 5
INCHES ACROSS THE CENTRAL THIRD OF PA...AND A COATING TO UP TO 2
INCHES ACROSS THE SOUTHERN THIRD OF PA. UP NORTH...SREF PTYPES AND
FORECAST SOUNDING ANALYSES INDICATE A NEARLY ALL SNOW EVENT...AND
WITH QPF REMAINING IN THE .6 TO .7 RANGE...WARNING CRITERIA
SNOWFALL IS STILL A HIGHLY PROBABLE OUTCOME...BUT NOT YET CERTAIN.
HAVE OPTED TO HOLD ONTO THE WINTER STORM WATCH FOR THE TIME BEING
TO ALLOW THIS EVENINGS SHIFT TO LOOK AT ADDITIONAL DATA BEFORE
MAKING THE CALL.

A 6 TO 8 HOUR PERIOD OF MODERATE TO HEAVY PRECIPITATION WILL
IMPACT CENTRAL PENNSYLVANIA ON THURSDAY. SLEET APPEARS TO BE THE
FAVORED PTYPE ACROSS THE CENTRAL AND SOUTH...WITH SNOW TO THE
NORTH AND A POSSIBLE TRANSITION TO PLAIN FREEZING RAIN BY
AFTERNOON ACROSS THE FAR SOUTH (SOUTH OF THE PA TURNPIKE). ICE
ACCRETION IS EXPECTED TO BE ONE TENTH OF AN INCH OR LESS IN THESE
AREAS.

THIS SYSTEM WILL PRODUCE WINTRY PRECIPITATION AT A MOST
INOPPORTUNE TIME FOR DECISIONS TO BE MADE ON SCHOOL/
BUSINESS/DAYCARE CANCELLATIONS...AS THE GREATEST ROAD IMPACTS WILL
OCCUR GENERALLY AFTER 8 AM AND LAST THROUGH 2 OR 3 PM. SURFACE
TEMPERATURES IN THE MID TO UPPER 20S WILL PREVENT MUCH MELTING...
ALTHOUGH FAR SOUTHERN PA NEAR THE MARYLAND BORDER MAY SEE SOME
AREAS SNEAK JUST ABOVE FREEZING FOR A SHORT TIME THURSDAY
AFTERNOON.

&&

.LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
FRIDAY INTO SATURDAY SEEMS BENIGN AS LARGE AREA OF HIGH PRESSURE
MOVE OVER NEW ENGLAND...SETTING THE STAGE FOR A SOURCE OF COLD
POOL AHEAD OF THE NEXT STORM.

THAT NEXT STORM IS FORECAST TO OCCUR OVER THE WEEKEND AND HAS
SIGNIFICANT /SNOW/ POTENTIAL...AND DIMINISHING UNCERTAINTY WITH
TIME. THAT IS...IT IS LOOKING MORE AND MORE LIKE WE WILL GET A
STORM OF SOME NOTE SATURDAY INTO SUNDAY.

LONG TERM GUIDANCE ALL DEPICT A MAJOR STORM COMING OUT OF THE DEEP
SOUTH...RIGHT UP THE EAST COAST WITH SECONDARY COASTAL DEVELOPMENT
LEADING TO THE POTENTIAL TO PRODUCE SIGNIFICANT SNOWS FOR CENTRAL
PA. ENOUGH GUIDANCE IS SUGGESTING STORM POTENTIAL TO MAKE ME
CONTINUE LIKELY POPS ON SATURDAY AND EVEN CATEGORICAL POPS FOR SAT
NIGHT. NO CERTAINTIES EXCEPT THE OCCURRENCE OF PRECIP ARE
THERE...BUT IF I AM CERTAIN OF ONE THING...LOOKING AT THE SYNOPTIC
SET UP...A MAJORITY OF THE PCPN - IF NOT ALL OF IT - SHOULD BE IN
THE FORM OF SNOW. MREF PLUMES SUGGEST A MAJORITY OF SNOW BUT POSSIBLE
SNOW/ICE/RAIN MIX ACROSS THE SOUTHEAST. ADDED IN OVER ABOUT THE
SERN QUARTER OF THE CWA. ONLY VISIBLE LIMITING FACTOR AT THIS
POINT...ASIDE FROM A CHANGE IN TRACK TO SIG VARY PCPN TYPE...IS
THE SPEED OF THE SYSTEM. ITS RELATIVELY FAST PROGRESS ACROSS THE
REGION COULD LIMIT PCPN AMOUNTS.

THE STORM SHOULD BE OVER WITH ON SUNDAY SOMETIME...MAYBE BEFORE
NOON...MAYBE NOT.

WRAP AROUND/CYCLONIC FLOW WILL KEEP CHC POPS IN THE NW FOR MONDAY
THEN DRY FOR TUESDAY AND WEDNESDAY WITH BELOW NORMAL TEMPS.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
EARLIER DISCUSSION SUMS UP SITUATION VERY WELL SO ONLY SOME
SMALLER CHANGES WERE NEEDED.

VFR CONDS WILL CONTINUE THROUGH THE EVENING WITH SFC HIGH
PRESSURE BUILDING INTO PA. INCREASING MID/HIGH CLOUDS OVERNIGHT WL
THICKEN AND LOWER TOWARD SUNRISE. VIS/CIGS WILL DETERIORATE EARLY
AND QUICKLY TOMORROW AS A BROAD INFLUX OF MOISTURE ALOFT /FROM THE
SW/ OVERRUNS A NEAR TO SUB-FREEZING AIRMASS ENTRENCHED AT THE
SFC. THIS WILL SET THE STAGE FOR A WINTRY MIX OF SNOW...SLEET AND
FREEZING RAIN OVERSPREADING THE REGION FM SW TO NE STARING AROUND
SUNRISE /12Z/. EXPECTING MORE SNOW/SLEET ACROSS THE NORTH WITH
BETTER CHCS FOR A PROLONGED PERIOD OF ICING OVR THE SOUTHERN
AIRFIELDS. BY THE MID TO LATE AFTN...PCPN MAY EVEN CHANGE OVER TO
PLAIN RAIN CLOSE TO THE PA/MD BORDER. THIS SYS QUICKLY SLIDES
ENEWD OFF THE NJ COAST TOMORROW NIGHT WITH WINTRY PCPN TAPERING
OFF AROUND 06Z FRI. SCT UPSLOPE -SHSN ARE PSBL ACROSS THE WRN/NRN
MTNS ON THE BACKSIDE OF THE DEPARTING SYS.

HIGH PRESSURE WILL POP IN FOR ANOTHER BRIEF VISIT AT THE END OF
THE WEEK/EARLY IN THE WEEKEND BEFORE ANOTHER...MORE POTENT STORM
TAKES AIM FOR THE WEEKEND. MDLS STILL SUGGESTING THE POTENTIAL FOR
A MAJOR EAST COAST WINTER STORM /ECWS/ FOR LATE SAT THRU SUNDAY
WITH VERY POOR FLYING CONDITIONS.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING FROM 6 AM TO 10 PM EST THURSDAY FOR
PAZ004>006-010>012-037-041-042.
WINTER WEATHER ADVISORY FROM 5 AM TO 10 PM EST THURSDAY FOR
PAZ017>019-024>028-045-046-049>053-056>059-063.
WINTER STORM WARNING FROM 4 AM TO 10 PM EST THURSDAY FOR
PAZ033.
WINTER WEATHER ADVISORY FROM 4 AM TO 10 PM EST THURSDAY FOR
PAZ034>036-064>066.

&&

SYNOPSIS...DANGELO
NEAR TERM...DEVOIR
SHORT TERM...DEVOIR
LONG TERM...DANGELO/GARTNER
AVIATION...RXR
Hazardous weather outlook, Dec 12, 3:19 PM EST, 4 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
319 PM EST WED DEC 12 2007

PAZ004>006-010>012-037-041-042-132030-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA-
NORTHERN LYCOMING-SULLIVAN-
319 PM EST WED DEC 12 2007

...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER STORM WATCH.

IN ADDITION...HEAVY SNOW IS POSSIBLE SATURDAY INTO SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ017>019-024>028-045-046-049>053-056>059-063-132030-
CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-
MIFFLIN-JUNIATA-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-
MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-
CUMBERLAND-
319 PM EST WED DEC 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TO 10 PM EST
THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

IN ADDITION...HEAVY SNOW IS POSSIBLE SATURDAY INTO SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ033>036-064>066-132030-
SOMERSET-BEDFORD-FULTON-FRANKLIN-ADAMS-YORK-LANCASTER-
319 PM EST WED DEC 12 2007

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 10 PM EST
THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO
WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE
INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

IN ADDITION...HEAVY SNOW IS POSSIBLE SATURDAY INTO SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

Nearby

Winter Storm Warnings in Pennsylvania, 2007Every winter storm warning in 2007

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.