Winter Storm Warning 3, NWS State College, PA

Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia 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, Montour County, PA, Northumberland County, PA, Perry County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, Warren County, PA, York County, PA

000 
WWUS41 KCTP 160207
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1007 PM EDT THU MAR 15 2007

...A LATE WINTER STORM TO AFFECT THE REGION...

PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058-161600-
/O.CON.KCTP.WS.W.0003.070316T1000Z-070317T1200Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
1007 PM EDT THU MAR 15 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM FRIDAY TO
8 AM EDT SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM FRIDAY TO 8 AM
EDT SATURDAY. 

A STORM WILL DEVELOP OVER THE SOUTHEASTERN STATES LATER THIS
EVENING...AND TRACK UP ALONG THE EASTERN SEABOARD FRIDAY AND
FRIDAY NIGHT...BRINGING HEAVY SNOW TO THE REGION.

SNOW WILL DEVELOP ACROSS THE REGION AROUND OR SHORTLY AFTER
DAYBREAK FRIDAY...AND BECOME HEAVY AT TIMES. SNOW ACCUMULATIONS
OF 4 TO 8 INCHES WILL BE COMMON BEFORE THE STORM TAPERS TO
LIGHTER SNOW AND SHOWERS LATE FRIDAY NIGHT. HIGHER AMOUNTS ARE
POSSIBLE NORTH OF INTERSTATE 80.

IF THE STORM INTENSIFIES MORE THAN EXPECTED...SNOWFALL AMOUNTS
COULD BE MUCH HIGHER.

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.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

$$

PAZ036-056-057-059-063>066-161600-
/O.CON.KCTP.WS.A.0006.070316T1000Z-070317T1200Z/
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
1007 PM EDT THU MAR 15 2007

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM EDT FRIDAY
THROUGH SATURDAY MORNING...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM EDT FRIDAY
THROUGH SATURDAY MORNING. 

A STORM WILL DEVELOP OVER THE SOUTHEASTERN STATES LATER THIS
EVENING...AND TRACK UP ALONG THE EASTERN SEABOARD FRIDAY AND
FRIDAY NIGHT...BRINGING THE POTENTIAL FOR HEAVY SNOW OR SLEET TO
THE REGION.

STEADY SNOW WILL DEVELOP ACROSS THE REGION AROUND DAYBREAK
FRIDAY...AND MAY BECOME HEAVY AT TIMES. THE SNOW COULD MIX WITH OR
CHANGE TO SLEET AT TIMES FRIDAY...WHICH WOULD KEEP ACCUMULATIONS
DOWN. AT THIS TIME ACCUMULATIONS OF ANYWHERE BETWEEN 2 TO 5 INCHES
OF SNOW AND SLEET CAN BE EXPECTED BEFORE THE STORM TAPERS TO
LIGHTER SNOW AND SHOWERS LATE FRIDAY NIGHT.

IF THE PRECIPITATION FAILS TO MIX WITH SLEET AND FALLS AS MAINLY
SNOW...AMOUNTS OF 6 TO 12 INCHES WILL BE POSSIBLE.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW OR ICE ACCUMULATION THAT MAY IMPACT TRAVEL. IF HEAVY SNOW OR
ICE BECOME IMMINENT...A WINTER STORM WARNING WILL BE ISSUED.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

$$

LA CORTE

000 
WWUS41 KCTP 160900
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
500 AM EDT FRI MAR 16 2007

...A LATE WINTER STORM TO AFFECT THE REGION...

.LOW PRESSURE...DEVELOPING OVER THE CAROLINAS THIS MORNING...WILL
TRACK UP THE EAST COAST LATER TODAY. THIS SYSTEM WILL BRING A
MODERATE TO HEAVY SNOWFALL OVER MUCH OF CENTRAL PENNSYLVANIA.

PAZ036-056-057-059-063>066-161700-
/O.UPG.KCTP.WS.A.0006.070316T1000Z-070317T1200Z/
/O.EXB.KCTP.WS.W.0003.070316T1400Z-070317T1200Z/
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
500 AM EDT FRI MAR 16 2007

...WINTER STORM WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 AM
EDT SATURDAY...
...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 10 AM THIS MORNING TO
8 AM EDT SATURDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

A MIXTURE OF RAIN AND SNOW WILL CHANGE TO ALL SNOW ACROSS THE
LOWER SUSQUEHANNA VALLEY BY THIS AFTERNOON. THE CHANGEOVER IS
LIKELY TO OCCUR EARLIEST FROM THE HARRISBURG AREA WESTWARD.
AREAS TO THE EAST...INCLUDING YORK AND LANCASTER...MAY REMAIN
MOSTLY RAIN UNTIL LATE IN THE AFTERNOON. THE SNOW WILL FALL
HEAVILY AT TIMES LATE THIS AFTERNOON THROUGH EARLY EVENING...THEN
TAPER OFF AROUND AROUND MIDNIGHT. TOTAL ACCUMULATIONS OF 5 TO 10
INCHES ARE EXPECTED BY LATE TONIGHT. HOWEVER...SOMEWHAT LOWER AMOUNTS 
ARE STILL POSSIBLE ACROSS LANCASTER AND YORK COUNTIES IF THE
CHANGE TO SNOW OCCURS LATER THAN EXPECTED.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

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>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058-161700-
/O.CON.KCTP.WS.W.0003.070316T1000Z-070317T1200Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
500 AM EDT FRI MAR 16 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY.

SNOW WILL DEVELOP ACROSS THE REGION THIS MORNING...POSSIBLY MIXING
WITH FREEZING RAIN OR RAIN EARLY THIS MORNING NEAR THE MARYLAND
BORDER. THE SNOW MAY FALL HEAVILY AT TIMES THIS AFTERNOON...THEN
TAPER OFF BY AROUND MIDNIGHT. TOTAL ACCUMULATIONS BY LATE TONIGHT
WILL GENERALLY RANGE FROM 5 TO 10 INCHES...WITH LOCALLY HIGHER
AMOUNTS POSSIBLE OVER THE MIDDLE SUSQUEHANNA VALLEY AND POCONO
MOUNTAINS.

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.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

$$

000 
WWUS41 KCTP 161528
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1128 AM EDT FRI MAR 16 2007

...A LATE WINTER STORM WILL CONTINUE TO IMPACT TRAVEL AND COMMERCE
ACROSS CENTRAL PENNSYLVANIA AND THE SUSQUEHANNA VALLEY THROUGH 
TONIGHT...

.LOW PRESSURE OVER SOUTH CAROLINA WILL MOVE NORTHEAST AND
INTENSIFY TODAY...BECOMING LOCATED JUST TO THE EAST OF ATLANTIC
CITY TONIGHT. THIS SYSTEM WILL BRING A WIDESPREAD MODERATE TO HEAVY
SNOWFALL TO ALL OF CENTRAL PENNSYLVANIA AND THE SUSQUEHANNA VALLEY
THIS AFTERNOON AND TONIGHT. SLEET AND FREEZING RAIN WILL BE MIXED
IN WITH THE SNOW NEAR AND TO THE SOUTH OF YORK AND LANCASTER
THROUGH THE MID AFTERNOON...BEFORE A CHANGEOVER TO HEAVY WET SNOW
OCCURS LATE THIS AFTERNOON. STORM TOTAL SNOWFALL WILL AVERAGE
BETWEEN 5 AND 10 INCHES WITH LOCALLY AROUND 1 FOOT OF SNOW ACROSS
THE MOUNTAINS NORTH AND EAST OF THE SUSQUEHANNA VALLEY.

PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058-171200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-070317T1200Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
1128 AM EDT FRI MAR 16 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY.

SNOW WILL FALL AT VARYING INTENSITY THROUGH TONIGHT. THE PERIOD OF
HEAVIEST SNOW WILL BE FROM LATE THIS AFTERNOON THROUGH ABOUT
MIDNIGHT TONIGHT WHEN SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR
WILL OCCUR...ESPECIALLY NEAR AND TO THE EAST OF THE SUSQUEHANNA
VALLEY.

TOTAL SNOW ACCUMULATIONS BY DAYBREAK SATURDAY WILL GENERALLY
RANGE FROM 6 TO 10 INCHES...WITH LOCALLY HIGHER AMOUNTS OF AROUND
12 TO 14 INCHES POSSIBLE ACROSS THE NORTH CENTRAL MOUNTAINS AND
ALONG THE INTERSTATE 81 CORRIDOR BETWEEN PINE GROVE AND HAZLETON.

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.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

$$

PAZ036-056-057-059-063>066-171200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-070317T1200Z/
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
1128 AM EDT FRI MAR 16 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY.

HEAVY WET SNOW WILL CONTINUE TO FALL NEAR AND TO THE NORTH OF
INTERSTATE 81 THROUGH EARLY TONIGHT...BEFORE GRADUALLY TAPERING
OFF. THE MIXTURE OF RAIN...SLEET AND WET SNOW SOUTH OF YORK AND
LANCASTER WILL CHANGE TO ALL SNOW LATE THIS AFTERNOON AND COULD
FALL AT A RATE OF 1 TO 2 INCHES PER HOUR INTO THIS EVENING.

TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES ARE EXPECTED BY LATE
TONIGHT ALONG THE INTERSTATE 81 CORRIDOR. HOWEVER...SOMEWHAT 
LOWER AMOUNTS OF 4 OR 5 INCHES ARE STILL POSSIBLE ACROSS SOUTHERN
LANCASTER AND SOUTHEASTERN YORK COUNTIES...ESPECIALLY IF THE
CHANGE TO ALL SNOW OCCURS JUST A FEW HOURS LATER THAN EXPECTED.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

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.

$$

LAMBERT

000 
WWUS41 KCTP 161918
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
318 PM EDT FRI MAR 16 2007

...A LATE WINTER STORM WILL CONTINUE TO SEVERELY IMPACT TRAVEL AND
COMMERCE ACROSS CENTRAL PENNSYLVANIA AND THE SUSQUEHANNA VALLEY
THROUGH TONIGHT...

.LOW PRESSURE OVER EASTERN NORTH CAROLINA WILL MOVE NORTHEAST AND
INTENSIFY THIS EVENING...BECOMING LOCATED JUST TO THE EAST OF
THE NEW JERSEY COAST TONIGHT. 

THIS STORM WILL BE RESPONSIBLE FOR A WIDESPREAD HEAVY SNOWFALL
ACROSS ALL OF CENTRAL PENNSYLVANIA AND THE SUSQUEHANNA VALLEY
THROUGH TONIGHT. STORM TOTAL SNOWFALL WILL AVERAGE BETWEEN 6 AND
10 INCHES...WITH LOCALLY BETWEEN 12 AND 15 INCHES ACROSS THE
HIGHER TERRAIN OF SULLIVAN AND SCHUYLKILL COUNTIES.

PERIODS OF LIGHT SNOW OR SNOW SHOWERS WILL BRING AN ADDITONAL
INCH OR TWO OF SNOW TO THE REGION ON SATURDAY...WITH ANOTHER
2 TO 4 INCHES POSSIBLE ACROSS THE NORTHWEST MOUNTAINS AND LAUREL 
HIGHLANDS.

PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058-171200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-070317T1200Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
318 PM EDT FRI MAR 16 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY.

SNOW WILL FALL AT VARYING INTENSITY THROUGH TONIGHT. THE PERIOD
OF HEAVIEST SNOW WILL BE FROM LATE THIS AFTERNOON THROUGH ABOUT
MIDNIGHT TONIGHT WHEN SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR
WILL OCCUR...ESPECIALLY NEAR AND TO THE EAST OF THE SUSQUEHANNA
VALLEY.

TOTAL SNOW ACCUMULATIONS BY DAYBREAK SATURDAY WILL GENERALLY
RANGE FROM 6 TO 10 INCHES...WITH LOCALLY HIGHER AMOUNTS OF AROUND
12 TO 15 INCHES POSSIBLE ACROSS THE NORTH CENTRAL MOUNTAINS AND
ALONG THE INTERSTATE 81 CORRIDOR BETWEEN PINE GROVE AND HAZLETON.

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.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

$$

PAZ036-056-057-059-063>066-171200-
/O.CON.KCTP.WS.W.0003.000000T0000Z-070317T1200Z/
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
318 PM EDT FRI MAR 16 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY.

HEAVY WET SNOW WILL CONTINUE TO FALL NEAR AND TO THE NORTH OF
INTERSTATE 81 THROUGH EARLY TONIGHT...BEFORE GRADUALLY TAPERING
OFF. SNOWFALL RATES OF 1 TO 2 INCHES PER HOURS WILL BE COMMON LATE
TODAY INTO THIS EVENING...ESPECIALLY TO THE NORTH AND EAST OF THE
HARRISBURG AREA.

TOTAL SNOW ACCUMULATIONS WILL AVERAGE 8 TO 10 INCHES ACROSS MOST
OF THE REGION BY LATE TONIGHT...WITH 12 TO 14 INCHES POSSIBLE IN
SOME LOCATIONS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL NEWS
SOURCE FOR THE LATEST UPDATES ON THIS DEVELOPING WINTER STORM.

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.

$$


LAMBERT/DEVOIR/GARTNER

000 
WWUS41 KCTP 170748
WSWCTP

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE STATE COLLEGE PA
348 AM EDT SAT MAR 17 2007

.SNOW HAS TAPERED OFF ACROSS PENNSYLVANIA...AS LOW PRESSURE MOVES
INTO NEW ENGLAND.

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-170900-
/O.CAN.KCTP.WS.W.0003.000000T0000Z-070317T1200Z/
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-
SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-
CUMBERLAND-ADAMS-YORK-LANCASTER-
348 AM EDT SAT MAR 17 2007

...WINTER STORM WARNING IS CANCELLED...

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

SNOW HAS TAPERED OFF ACROSS CENTRAL PENNSYLVANIA THIS MORNING.
LINGERING SNOW SHOWERS WILL ONLY PRODUCE LIGHT ADDITIONAL
ACCUMULATIONS ACROSS THE NORTHERN MOUNTAINS OF PENNSYLVANIA TODAY. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
519 PM EDT THU MAR 15 2007

.SHORT TERM /REST OF TONIGHT/...

PLAN ON UPGRADING MOST OF MY WATCH AND ADVISORY COUNTIES TO A
WINTER STORM WARNING. WILL WRITE A MORE DETAILED EXPLANATION
WITHIN THE HOUR.

LA CORTE

&&

.PREV DISCUSSION...
/ISSUED 359 PM EDT THU MAR 15 2007/

SHORT TERM /TONIGHT THROUGH FRIDAY/...
THE FINAL...WEAK UPPER SHORT WAVE FOR THE UPCOMING 12 HOURS OR SO
WILL BE TRACKING ENE ACROSS CENTRAL AND SOUTHERN SECTIONS OF THE CWA
BRINGING RAIN TO THE SOUTH...AND A MIXTURE OF RAIN AND WET SNOW
ACROSS THE CENTRAL SUSQ VALLEY AND CENTRAL/SW MTNS.

DETERMINISTIC AND EPS PLUME DIAGRAMS ARE IN FAIRLY GOOD AGREEMENT ON
THE TIMING...TYPE...AND AMOUNT OF PRECIP WITH THE UPCOMING COASTAL
LOW FOR FRIDAY AND FRIDAY NIGHT. THERE IS HIGH CONFIDENCE FOR
SNOWFALL OF AT LEAST 3 TO 6 INCHES ACROSS MUCH OF THE CWA...WITH
SREF PLUME MEAN QPF IN THE 0.5 TO 0.7 INCH RANGE. THE DAYTIME/EARLY
EVENING TIMING FOR THE HEAVIEST SNOW BRINGS A LOWER SNOW/WATER RATIO
INTO ACCOUNT...WHICH LEADS TO STORM TOTAL SNOWFALL OF 5 TO 7 INCHES.
THIS IS RIGHT ON THE CUSP OF WINTER STORM WARNING CRITERIA.

LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...
PROGRESSIVE/QUASI-ZONAL UPPER LEVEL FLOW PATTERN CONTINUES TO
AMPLIFY AS A PACIFIC RIDGE BUILDS OVER INTERMOUNTAIN WEST. A COMPACT
NRN STREAM SHORTWAVE EVIDENT ON WV IMAGERY MOVING SEWD ACROSS THE
UPPER MIDWEST WILL PROGRESS INTO WRN GREAT LAKES AND ASSIST IN
DEEPENING THE LONG WAVE TROUGH OVER THE OHIO VALLEY...EVENTUALLY
PHASING WITH THE OPEN MID-TROPOSPHERIC CYC CIRC CURRENTLY SLIDING
ENEWD ALONG THE CENTRAL GULF COAST.

DETERMINISTIC MODELS AND ENSEMBLE PREDICTION SYSTEMS HAVE FINALLY
REACHED A CONSENSUS ON THE AFOREMENTIONED AMPLIFICATION OF THE ERN
TROF AND RESULTING EAST COAST STORM SYSTEM. ALTHOUGH THERE ARE STILL
SOME DISCREPANCIES BTWN THE OPERATIONAL NAM/GFS SOLUTIONS...A BROAD
CONSENSUS OF THE 12Z GLOBAL MODELS SUPPORTS A SOLUTION VERY CLOSE TO
THE GFS.

A DEEPENING COASTAL LOW LOCATED JUST SE OF THE DELMARVA AT 00Z SAT
WILL RAPIDLY STRENGTHEN AS IT MOVES NEWD ALONG THE NEW ENGLAND COAST.
SEVERAL INGREDIENTS TYPICALLY ASSOCIATED WITH SIGNIFICANT EAST COAST
WINTER STORMS /ECWS/ ARE EVIDENT IN THE EPS NORMALIZED ANOMALY
FIELDS. THESE FEATURES INCLUDE A BLW NORMAL /MSLP/ SFC
CYCLONE...ANOMALOUS COLD AIR INJECTED INTO THE BACKSIDE OF THE MID/UPPER
LEVEL TROF AND VERY STRONG /+2-4STD/ NEGATIVE U /EASTERLY/ AND
POSITIVE V /SOUTHERLY/ COMPONENT ANOMALIES IN THE 850MB WIND
FIELD. AS THE UPPER LEVEL TROF TAKES ON A NEGATIVE TILT...A WELL-
DEFINED AND PERSISTENT DEFORMATION ZONE WILL SET UP ACROSS THE
CENTRAL/NORTHERN APPALACHIANS WITHIN A BAND OF STRONG
FRONTOGENETICAL FORCING WITH MODERATE TO POTENTIALLY HEAVY SNOW
DEVELOPING ON THE NOSE OF THE COMMA-SHAPED PCPN SHIELD. IN
ADDITION...ENHANCED UVVEL/OMEGAS WILL BE COMMON WITHIN THE RIGHT
ENTRANCE REGION OF A 100+KT UPPER LEVEL JET STREAK.

WITH ALL OF THE INGREDIENTS FOR A LATE-SEASON WINTER STORM IN
PLACE...THE LAST REMAINING PIECE OF PERTINENT INFORMATION IS EXACTLY
WHERE THE RA/SN LINE WILL BE. THE SREF/MREF ADAMANTLY PAINT THE
HIGHEST QPF VALUES ALONG AND EAST OF A LINE FROM THE LWR SUSQ/ECENT
MTNS NEWD INTO THE POCONOS/HUDSON RVR VLY. HOWEVER...THIS ALSO
APPEARS TO BE WHERE THE HIGHEST UNCERTAINTY LIES WITH RESPECT TO THE
0C 850MB ISOTHERM. THIS WILL LEAD TO POTENTIAL PTYPE ISSUES AS THE
HIGHEST PROB OF SNOW IS NOT COLLOCATED WITH THE HIGHEST QPF VALUES.
FURTHER NORTH AND WEST ACROSS NORTH/CENTRAL PA...HIGHER CONFIDENCE
EXISTS FOR ALL SNOW...HOWEVER THE QUESTION HERE IS ARE AMOUNTS HIGH
ENUF FOR WARNING OR ADVISORY? ALTHOUGH CONFIDENCE HAS INCREASED
OVERALL WITH RESPECT TO THIS RAPIDLY CHANGING WEATHER
SITUATION...WILL HOLD THE COURSE ON THE WINTER STORM WATCH -
EXPANDING IT FURTHER NWWD. WILL LET THE EVENING SHIFT MAKE THE
FINAL CALL AFTER EXAMINING LATER MODEL GUID/15Z SREFS.

SNOW BEGINS TO WIND DOWN ON SATURDAY WITH A DRY SLOT PUNCHING INTO
THE ERN SECTIONS AND DEFORMATION/WRAP AROUND SNOWS CONTINUING ACROSS
THE WEST AS THE UPR LVL LOW DROPS INTO THE UPR OH VLY. HAVE KEPT
POPS THE HIGHEST ACROSS THE NW MTNS/LAUREL HIGHLANDS DURING THIS
PERIOD. BLW NORMAL TEMPS EXPECTED WHICH IS SUPPORTED BY SREF 850MB
TEMPS ON THE ORDER OF 1-2STD BLW NORMAL.

THE LATEST MEDIUM RANGE MODELS ARE IN GENERAL AGREEMENT WITH THE
EVOLUTION OF THE LARGE SCALE FLOW ACRS NOAM IN THE LATER PERIODS.
THE HIGHLY AMPLIFIED EASTERN TROF WL BE LIFTING OUT AT THE
BEGINNING OF THE PERIOD (SUN)...WITH THE FLOW TEMPORARILY
RETURNING TO A QUASI-ZONAL/BROAD WNWERLY PROGRESSIVE SPLIT STREAM
FLOW. HOWEVER...THIS WL BE SHORT LIVED AS MODELS AGREE THAT THERE
WL BE RE-AMPLIFICATION OVER ERN NOAM MON-TUE AND THEN FARTHER
UPSTREAM OVR THE WRN U.S. TOWARD THE END OF THE MED RANGE PERIOD
(TUE-THU) AS A NERN PAC RIDGE BUILDS...SUPPORTING AN AMPLIFYING
WRN TROF AND A BUILDING DOWNSTREAM RIDGE.

COLD AND BRISK CYCLONIC FLOW ON THE BACKSIDE OF THE DEPARTING ERN
TROF WILL KEEP CLOUDS AND POSSIBLY SOME -SHSN INTO
SUNDAY...ESPECIALLY ACROSS THE WESTERN/NORTHERN HIGH TERRAIN. GEFS
DATA SUPPORTS HIGHS AOB GUIDANCE SUNDAY GIVEN 850MB TEMPS 1-2STD
BLW NORMAL. HIGH PRESSURE MOVG EWD ACROSS THE SRN APPALACHIANS
BRIEFLY BUILDS IN FOR SUNDAY NIGHT WITH DECREASING CLOUDS. THE
HIGH QUICKLY SLIDES OFFSHORE BY EARLY MONDAY WITH RETURN FLOW
DEVELOPING AHEAD OF A MID-LVL S/W AND SFC COLD FRONT. STILL SOME
QUESTION WITH REGARD TO PTYPE...BUT THE GFS STILL SHOWS A BRIEF
SHOT OF WAA SN FOR MONDAY AND HAVE NUDGED POPS UP SLIGHTLY. THE
COLD FRONT TRAVERSES THE STATE BY TUESDAY WITH A HIGH PRESSURE
SYSTEM BUILDING IN TO THE NORTH OVER SRN ONTARIO. MUCH OF TUES/WED
SHOULD BE DRY WITH SFC FLOW VEERING AROUND TO THE SOUTH/SOUTHEAST
BY THURSDAY. THE GEFS HAS BEEN FAIRLY CONSISTENT IN BRINGING AN
ANOMALOUS UPPER LEVEL RIDGE INTO THE CENTRAL/EASTERN U.S. BY LATE
WEEK...ALLOWING TEMPERATURES TO REBOUND TO ABOVE CLIMO. HEIGHTS
INCREASE TO +570DM BY THURSDAY WHICH SUPPORTS INCREASING TEMPS AND
HAVE GONE ABOVE HPC GUID HERE WITH A BLEND OF THE GFS/DGEX. AS FAR
AS PCPN...HAVE KEPT THE LATER PDS DRY BUT WILL NEED TO WATCH FOR
ANY S/WS EJECTING NEWD FROM THE W-CENTRAL CONUS TROF.

AVIATION /20Z-18Z/...
AVIATION ISSUES TODAY REMAIN COMPLEX DESPITE THE GENERAL IMPROVEMENT
ACROSS THE REGION THIS AFTERNOON AS THE FIRST BATCH OF PRECIPITATION
MOVES NORTHEAST AND DISSIPATES.  PREVALENT MVFR CONDITIONS ARE
NEALY A SHORT LIVED REPRIEVE AS THE NEXT WAVE CURRENTLY IN SOUTHWEST
PENNSYLVANIA IS TRACKING INTO CENTRAL AND SOUTHERN COUNTIES.

THIS NEXT WAVE WILL TACK OVER KJST...KAOO...KUNV...WITH KIPT ON
THE NORTHERN FRINGE.  PRECIP SHOULD REMAIN SOUTH OF KBFD WITH THIS
WAVE...WHILE KMDT IS TOO FAR TO THE SOUTH.  WITH PLENTY OF LOW
LEVEL MOISTURE AND AN EXPECTED DROP IN CIGS/VIS WITH PRECIP...MOST
OF THE STATE WILL SEE IFR BY LATE AFTERNOON/EARLY EVENING.

BUT THIS WAVE DOES NOT CONCLUDE THE DISCUSSION.

EXPECT ANOTHER BRIEF PERIOD OF IMPROVED CONDITIONS LATER THIS
EVENING AND LAST THROUGH THE EARLY OVERNIGHT HOURS...HOWEVER A
COASTAL LOW WILL DEVELOP LATE IN THE PERIOD.
KJST...KAOO...KUNV...KIPT WILL REMAIN ON THE NORTH SIDE OF THIS
STORM...AND WILL SEE MAINLY SNOWFALL/CIG INDUCED IFR...WHILE KBFD IS
ON THE NORTHERN PERIPHERY AND WILL LIKELY SEE A MIX OF IFR-MVFR.
KMDT CAN EXPECT THE EARLIEST ONSET OF SNOW AND FOR IFR CONDITIONS TO
PERSIST THE LONGEST.

HYDROLOGY...
WE RECENTLY /WITHIN THE PAST 30 MINUTES/ CANCELED THE FLOOD WATCHES
THAT WERE UP FOR THE ENTIRE REGION THROUGH 4 PM ACROSS THE
NORTH...AND MIDNIGHT OVER THE LOWER SUSQ VALLEY.

RAINFALL AMOUNTS OVER THE PAST 30 HOURS RANGED FROM AROUND 2 INCHES
ACROSS THE FAR NORTHWEST MOUNTAINS...TO BETWEEN ONE HALF OF AN INCH
AND ONE INCH ACROSS THE CENTRAL MOUNTAINS. ONE QUARTER OF AN INCH OR
LESS OF RAIN HAS FALLEN ACROSS SOUTHEASTERN PENNSYLVANIA. ADDITIONAL
RAINFALL OF 0.25 TO 0.50 ACROSS THE SOUTH AND CENTRAL/LWR SUSQ
VALLEY WILL NOT SIGNIFICANTLY IMPACT STREAM AND CREEK LEVELS THROUGH
EARLY TONIGHT.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING FROM 6 AM FRIDAY TO 8 AM EDT SATURDAY FOR
PAZ004>006-010>012-017>019-024>028-033>035-037-041-042-045-046-
049>053-058.

WINTER STORM WATCH FROM FRIDAY MORNING THROUGH SATURDAY
MORNING FOR PAZ036-056-057-059-063>066.

&&

SHORT TERM...

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
523 AM EDT THU MAR 15 2007

PAZ028-036-041-042-046-049>053-056>059-063>066-160930-
JUNIATA-FRANKLIN-NORTHERN LYCOMING-SULLIVAN-SOUTHERN LYCOMING-
UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-
SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
523 AM EDT THU MAR 15 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT
ADDITIONAL RAINFALL BETWEEN ONE AND TWO INCHES COMBINED WITH RECENT
SNOW MELT MAY POTENTIALLY EXCESSIVE RUNOFF INTO STREAMS AND
CREEKS TODAY. A FLOOD WATCH REMAINS IN EFFECT FOR THE AREA THROUGH
THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
A STORM WILL RAPIDLY STRENGTHEN AND TRACK NORTHWARD ALONG THE
EASTERN SEABOARD FRIDAY AND FRIDAY NIGHT...BRINGING THE POTENTIAL
FOR SEVERAL INCHES OF HEAVY WET SNOW TO EASTERN PENNSYLVANIA. THE
POTENTIAL EXISTS FOR 6 INCHES OR MORE OF SNOW TO FALL OVER THE
WATCH AREA BY THE TIME THE STORM WINDS DOWN LATE FRIDAY NIGHT. THE
SNOW MAY BE MIXED WITH SNOW IN THE LOWER ELEVATIONS OF YORK AND
LANCASTER COUNTIES...REDUCING TOTAL STORM ACCUMULATIONS THERE DUE
TO MELTING.

PAZ004>006-010>012-017>019-024>027-033>035-037-045-160930-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
SOMERSET-BEDFORD-FULTON-TIOGA-SOUTHERN CLINTON-
523 AM EDT THU MAR 15 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT
ADDITIONAL RAINFALL UP TO ONE INCH COMBINED WITH RECENT SNOW MELT
MAY POTENTIALLY EXCESSIVE RUNOFF INTO STREAMS AND CREEKS TODAY. A
FLOOD WATCH REMAINS IN EFFECT FOR THE AREA THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
A STORM WILL RAPIDLY STRENGTHEN AND TRACK NORTHWARD ALONG THE
EASTERN SEABOARD FRIDAY AND FRIDAY NIGHT...BRINGING THE POTENTIAL
FOR ACCUMULATING SNOWFALL TO CENTRAL PENNSYLVANIA. AT THIS
TIME...IT APPEARS THAT BETWEEN 2 AND 5 INCHES MAY BE COMMON ACROSS
CENTRAL AND WESTERN PORTIONS FRIDAY INTO FRIDAY NIGHT.

DEVOIR