Severe Thunderstorm Warning 91, NWS State College, PA

000 
WWUS51 KCTP 131726
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
126 PM EDT SUN JUL 13 2008

PAC061-067-087-131800-
/O.CON.KCTP.SV.W.0091.000000T0000Z-080713T1800Z/
JUNIATA PA-HUNTINGDON PA-MIFFLIN PA-
124 PM EDT SUN JUL 13 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR MIFFLIN...CENTRAL HUNTINGDON AND NORTHERN JUNIATA COUNTIES...

AT 120 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR LEWISTOWN...MOVING
EAST AT 31 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BURNHAM...WALNUT AND MILROY AROUND 130 PM EDT...
  ALFARATA AROUND 135 PM EDT...
  MIFFLINTOWN...MIFFLIN AND REEDS GAP STATE PARK AROUND 140 PM EDT...
  BELLTOWN AROUND 145 PM EDT...
  MCALISTERVILLE AND THOMPSONTOWN AROUND 155 PM EDT...

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 22...ROUTE 
322...ROUTE 522.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE FOR DAMAGING WINDS...
DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING...AWAY FROM WINDOWS OR EVEN BELOW GROUND LEVEL.

WIND DAMAGE WITH THIS STORM WILL OCCUR RIGHT AT THE LEADING EDGE OF 
THE RAIN...AND ALMOST NO LIGHTNING IS OCCURRING. DO NOT WAIT FOR THE 
SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY 
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 4069 7764 4082 7744 4073 7736 4071 7736
      4070 7732 4057 7719 4033 7812
TIME...MOT...LOC 1724Z 251DEG 27KT 4061 7759

$$

FORECASTER: DANGELO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1140 AM EDT SUN JUL 13 2008

.SYNOPSIS...
A COLD FRONT EXTENDING FROM LAKE ONTARIO TO CENTRAL OHIO LATE THIS
MORNING WILL MOVE EAST ACROSS THE REGION LATE TODAY...BRINGING
NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS...FOLLOWED BY DRIER
AND SLIGHTLY COOLER AIR FOR MONDAY. HIGH PRESSURE WILL THEN BUILD
ACROSS THE EASTERN STATES...RESULTING IN NEAR NORMAL TEMPERATURES
AND DRY WEATHER FOR MUCH OF THE REMAINDER OF THE WEEK. TEMPERATURES
WILL MODERATE TO ABOVE NORMAL LEVELS BY NEXT WEEKEND.

&&

.NEAR TERM /UNTIL 9 PM THIS EVENING/...
SHOWERS AND THUNDERSTORMS HAVE BEEN LIMITED TO THE NRN MTNS LATE
THIS MORNING...IN AN AREA OF RELATIVELY STRONGER 925-850 HPA SW
WINDS AND THETA-E CONVERGENCE.

ABUNDANT...LAYERED STRATO AND ALTO CU CLOUDS SPREADING ACROSS THE
NW HALF OF THE CWA WILL LIMIT BOUNDARY LAYER BASED INSTABILITY.
ELSEWHERE ACROSS THE EASTERN HALF OF THE CWA A DECENT AMOUNT OF
SUNSHINE HAS OCCURRED THIS MORNING. 06Z NAM AND 09Z SREF SHOWS
SEVERAL AREAS OF HIGH ML CAPE NEAR 2000 J/KG AND EHI BETWEEN 1 AND
1.5. THIS WILL SUPPORT BKN LINES OF STRONG TO SVR TSRA WITH
EMBEDDED MINI BOW ECHOES AND BRIEF-LIVED SUPERCELL STORMS.
INCLUDED ENHANCED WORDING FOR GUSTY WINDS AND SMALL HAIL FOR THE
ERN HALF OF THE REGION THIS AFTERNOON.

THE OTHER CHANGE WAS TO BETTER INDICATE THE TIMING OF THE CLEARING
LATE TODAY ACROSS THE NW ZONES.

PREVIOUS GRID SET APPEARS IN GOOD SHAPE WITH RESPECT TO POPS AND
TEMPS.

&&

.SHORT TERM /9 PM THIS EVENING THROUGH 6 PM MONDAY/...
THE FRONT WILL PUSH THRU MOST OF THE AREA BY EVENING...BUT
GUIDANCE HINTS AT A WEAK WAVE POSSIBLY SNEAKING UP THRU THE
DELMARVA...WHICH COULD KEEP CLOUDS AND SHOWERS LINGERING OVER SERN
SXNS INTO MONDAY MORNING. OTHERWISE MONDAY WILL BE A DRIER DAY
WITH PLEASANT TEMPS.

&&

.LONG TERM /MONDAY NIGHT THROUGH SATURDAY/...
COOLER-DRIER AIRMASS WILL START THE WEEK...WITH ENSEMBLES
PROGGING A TROF PUSHING THRU WITH UPPER HEIGHTS IN THE 1-2 STD
DEV BELOW NORMAL RANGE. DESPITE SOME ANOMALOUSLY COOL 850 AIR
PROGGED TO MOVE IN...WITH BRIGHT SUN...DAYTIME HIGHS SHUD AVERAGE
NEAR NORMAL TO START THE WEEK...WITH A MODERATION TREND TO ABOVE
NORMAL BY MID-LATE WEEK. A VERY SUMMERY WEEK FOR THE LUCKY ONES
WHO PLANNED VACATION TIME.

&&

.AVIATION /15Z SUNDAY THROUGH THURSDAY/...
AN ADDITIONAL CLUSTER OF SHOWERS AND STORMS MOVING ACROSS NORTH
CENTRAL PA THROUGH MID MORNING. SOME WITH TORRENTIAL RAIN.

THINGS SHOULD MOVE OUT OF THE AREA FOR A BRIEF TIME AROUND MIDDAY...
AS THE LL JET LIFTS NE OF THE THE AREA. LAST NIGHT WAS ONE
OF THE FEW NIGHTS THAT IT HAS BEEN BREEZY THIS SUMMER. THIS OFTEN
RESULTS IN CONVECTION OVERNIGHT... AND LAST NIGHT WAS NO
EXCEPTION. TEMPS WERE NEAR 80 DEGREES EARLY ON.

ANYWAY...MORE IN THE WAY OF SHOWERS AND STORMS THIS AFTERNOON WITH
THE FRONT. THINK CLDS AND LACK OF REAL COLD AIR ALOFT WILL LIMIT
THE AMT STRONG TO SEVERE STORMS TODAY.

SHOWERS AND STORMS LIKELY TO LINGER INTO TONIGHT...AND EVEN
EARLY MONDAY MORNING...AS WAVE MOVES ALONG THE FRONT.
EXPECT A WIDE RANGE IN CONDITIONS THROUGH MONDAY MORNING.

BASICALLY FAIR WEATHER WILL PREVAIL FROM MONDAY AFTERNOON THRU
THU AS HIGH PRESSURE REMAINS IN PLACE OVR THE MID-ATLANTIC REGION.
VFR CONDS WILL BE THE RULE ALL AREAS...HOWEVER AN ISOLATED PATCH
OF FOG WILL BE POSSIBLE FROM TIME TO TIME...MAINLY LATE AT NIGHT.

NOTE...NON-REPRESENTATIVE WIND GUSTS 30-60KTS OCCASIONALLY BEING
RECORDED ON SURFACE OBSERVATION REPORT AT TAF SITES JST/IPT DUE TO
BIRD ACTIVITY IN VCNTY OF WIND SENSOR.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

SYNOPSIS...LACORTE/LAMBERT
NEAR TERM...LAMBERT
SHORT TERM...LACORTE
LONG TERM...LACORTE
AVIATION...MARTIN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
427 AM EDT SUN JUL 13 2008

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-140830-
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-
427 AM EDT SUN JUL 13 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL BRING A SLIGHT RISK FOR SEVERE THUNDERSTORMS
TODAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

JL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
801 AM EDT SUN JUL 13 2008

PAZ010-011-131315-
CAMERON PA-ELK PA-
801 AM EDT SUN JUL 13 2008

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL AND EASTERN ELK COUNTY
ALONG WITH WESTERN CAMERON COUNTY THROUGH 915 AM EDT ...

AT 757 AM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM RIDGWAY
TO 11 MILES NORTHWEST OF DUBOIS...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 45 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SOME SMALL
STREAMS.

THESE STORMS WILL BE NEAR EAST BRANCH DAM AROUND 815 AM...ST. MARYS
AROUND 830 AM...ELK RIVER AROUND 845 AM AND SIZERVILLE AROUND 900 AM.
ANOTHER AREA OF STRONG THUNDERSTORMS WILL FOLLOW THE INITIAL STORMS
BY ABOUT 20 MINUTES...AND AFFECT MANY OF THE SAME LOCATIONS.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 219...STATE
ROAD 120...STATE ROAD 255.

FORECASTER: LAMBERT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1045 AM EDT SUN JUL 13 2008

PAZ004-005-131600-
MCKEAN PA-WARREN PA-
1045 AM EDT SUN JUL 13 2008

...A STRONG THUNDERSTORM WILL AFFECT MCKEAN AND SOUTHEASTERN WARREN
COUNTIES...

AT 1040 AM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR SHEFFIELD...
MOVING NORTHEAST AT 35 MPH.

WIND GUSTS TO 45 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. A
10 TO 15 MINUTE PERIOD OF VERY HEAVY RAIN WILL FALL FROM THIS
STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL
ROADSIDE DITCHES AND SOME SMALL STREAMS. ALSO EXPECT OCCASIONAL...
DANGEROUS CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT SEEK
SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A
THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR WESTLINE AROUND 1100 AM...MOUNT JEWETT AROUND
1115 AM...CYCLONE AROUND 1130 AM...CORYVILLE AROUND 1145 AM...AND
PORT ALLEGANY AROUND 1155 AM.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...STATE
ROAD 46...STATE ROAD 59...STATE ROAD 446.

FORECASTER: LAMBERT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1128 AM EDT SUN JUL 13 2008

PAZ024>026-033-034-131630-
BEDFORD PA-BLAIR PA-CAMBRIA PA-HUNTINGDON PA-SOMERSET PA-
1128 AM EDT SUN JUL 13 2008

...STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL BEDFORD...
NORTHEASTERN SOMERSET...SOUTH CENTRAL CAMBRIA...SOUTHERN BLAIR AND
WESTERN HUNTINGDON COUNTIES THROUGH 1230 PM EDT...

AT 1126 AM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM SPRING
HILL TO CENTRAL CITY...MOVING NORTHEAST AT 32 MPH.

WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THESE
STORMS.

THESE STORMS WILL BE NEAR HOLLIDAYSBURG AROUND 1145 AM...ROARING
SPRING AROUND NOON...PETERSBURG AROUND 1215 PM AND MARKLESBURG AROUND
1230 PM.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...
I-99 BETWEEN MILE MARKERS 13 AND 28.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 22...ROUTE
220.

FORECASTER: LAMBERT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1132 AM EDT SUN JUL 13 2008

PAZ037-131645-
TIOGA PA-
1132 AM EDT SUN JUL 13 2008

...A STRONG THUNDERSTORM WILL AFFECT TIOGA COUNTY THROUGH 1245 PM
EDT...

AT 1131 AM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR LEONARD
HARRISON STATE PARK...MOVING NORTHEAST AT 31 MPH.

WIND GUSTS TO 50 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THIS
STORM. EXPECT OCCASIONAL...DANGEROUS CLOUD TO GROUND LIGHTNING FROM
THIS STORM. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR WELLSBORO AROUND 1145 AM...COVINGTON AROUND
NOON...MANSFIELD AROUND 1215 PM AND ROSEVILLE AROUND 1230 PM.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 15.

FORECASTER: LAMBERT/EVANEGO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1236 PM EDT SUN JUL 13 2008

PAZ012-041-131700-
NORTHERN CLINTON PA-NORTHERN LYCOMING PA-
1236 PM EDT SUN JUL 13 2008

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL CLINTON AND
NORTHWESTERN LYCOMING COUNTIES...

AT 1235 PM EDT...A STRONG THUNDERSTORM WAS LOCATED BETWEEN RENOVO
AND HYNER...MOVING NORTHEAST AT 32 MPH.

WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR SLATE RUN AROUND 1255 PM AND CAMMAL AROUND
100 PM...STAYING OVER MAINLY RURAL AND FORESTED AREAS.

FORECASTER: DANGELO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1242 PM EDT SUN JUL 13 2008

PAZ026-131700-
HUNTINGDON PA-
1242 PM EDT SUN JUL 13 2008

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL HUNTINGDON COUNTY...

AT 1239 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM
PETERSBURG TO ENTRIKEN...MOVING EAST AT 31 MPH.

WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THESE
STORMS. VERY HEAVY RAIN WILL ALSO FALL FROM THESE STORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.

THESE STORMS WILL BE NEAR RAYSTOWN DAM AND HUNTINGDON AROUND 1250 PM
AND MILL CREEK AROUND 100 PM.

THIS WILL ALSO IMPACT ROUTE 22.

FORECASTER: DANGELO