Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

June 29, 2012Huntingdon County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 29, 2012, 8:22 PM EDT for Huntingdon County, Pennsylvania. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 29, 2012, 8:22 PM EDT (00:22 UTC)
Expired: Jun 29, 2012, 9:00 PM EDT
In force: 38 min
Issued by: NWS State College, PA

County Huntingdon County, PA

The radar

The State College radar (KCCX), 64 km from the middle of the area, began a volume at 00:25 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, 0.4 hours before the alert went out and 162 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 5490 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1596 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 12.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 29, 4:08 PM EDT, 4 hours 14 minutes earlier.

Area forecast discussion, Jun 29, 4:08 PM EDT, 4 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
408 PM EDT FRI JUN 29 2012

.SYNOPSIS...
HOT AND MUGGY CONDITIONS WILL PREVAIL OVER THE UPCOMING WEEKEND
AND INTO NEXT WEEK...AS A WEAK COLD FRONT STALLS NEAR THE
PENNSYLVANIA...MARYLAND BORDER.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
THE REGION IS BASKING UNDER HAZY SUNSHINE AND MUGGY DEWPOINTS.
THERE WILL BE SOME DROP OFF IN HUMIDITY AS NW FLOW PUSHES SLIGHTLY
DRIER AIR INTO THE REGION FROM THE NORTH THIS AFTERNOON...BUT
THAT WILL MAINLY AFFECT NORTHERN AREAS. CENTRAL AND SOUTHERN PA
WILL REMAIN STEAMY INTO THE WEEKEND.

VERY WARM MID LEVELS AND A LACK OF A WELL DEFINED TRIGGER WILL
KEEP A LID ON CONVECTIVE ACTIVITY TODAY...SO LITTLE RELIEF SEEN
FOR THE HEAT FROM MOTHER NATURE.

850 MB TEMPS BETWEEN 20-24C NORTH TO SOUTH WILL SUPPORT MAX TEMPS
IN THE MID 80S NORTH...AND MID 90S ACROSS THE LOWER SUSQ VALLEY.
SOME LOCATIONS ALONG THE MD BORDER MAY NUDGE THE CENTURY MARK.
HUMID AIR LINGERING ACROSS THE LOWER SUSQ VALLEY WILL RESULT IN
HEAT INDICES WITHIN A DEGREE OR TWO EITHER SIDE OF 100 THIS AFTN.

FAIR BUT MUGGY CONDITIONS WILL CONTINUE OVERNIGHT OVER ABOUT THE
SRN HALF OF THE REGION. DRIER AIR WILL MAKE FOR MORE COMFORTABLE
SLEEPING OVER THE NORTHERN TIER. THERE IS SOME UPSTREAM CONVECTION
MOVING TWD CHICAGO AT THIS HOUR...BUT EXPECTATIONS ARE THAT THIS
WILL STEER ESE AND EVENTUALLY MISS THE REGION OFF TO OUR SOUTH
ALONG THE RIBBON OF HIGHEST MOISTURE.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH 6 PM SATURDAY/...
ANOTHER DAY OF HEAT WITH SURGING HUMIDITY IS IN STORE FOR
SATURDAY. APPARENT TEMPERATURES WILL REACH WELL INTO THE 90S FOR
THE SOUTHERN HALF OF THE COMMONWEALTH AND HEAT ADVISORIES REMAIN
IN EFFECT THROUGH SATURDAY EVENING FOR MOST OF THE SOUTHEAST.

BIGGEST QUESTION FOR SATURDAY WILL BE IF WE SEE ANOTHER MCS ROTATE
THRU THE NRN EDGE OF THE MID LATITUDE RIDGE. NEW NAM BRINGS AN
AREA OF RAIN THROUGH SAT AFTERNOON...WHILE THE NEW GFS IS MORE
AMORPHOUS WITH THE QPF IT GENERATES. THE GEFS/SREF BOTH SHOW A
PRETTY GOOD CHANCE OF RAIN SO IT LOOKS LIKE A GOOD IDEA TO RAISE
AFTERNOON POPS A BIT TO AT LEAST COVER THE CHANCE OF STORMS.

&&

.LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
A BROAD UPPER TROUGH WILL EXTEND FROM THE UPPER MS VALLEY EWD ACROSS
THE GREAT LAKES AND INTO THE NERN STATES...WITH EMBEDDED VORTICITY
MAXIMA TRANSLATING EWD WITHIN FAST WESTERLY FLOW ALOFT ALONG THE
US/CANADIAN BORDER. ONE DISTINCT SHORTWAVE TROUGH IS EXPECTED TO
BE OVER THE IND/OH AREA...AND WILL SPREAD EWD ACROSS
PA INTO THE DELMARVA BY 12Z SUN. THIS FEATURE WILL COMBINE WITH
AMPLE MOISTURE AND INSTABILITY ON THE NRN PERIPHERY OF THE HOT SE
RIDGE TO PRODUCE POTENTIALLY SIGNIFICANT MCS/SEVERE WIND. THE DY2
SPC SLGT RISK COVERS NEARLY ALL OF THE CWA EXCEPT FOR THE NRN
TIER.

THE MODELS AND ENSEMBLES OFFER A REASONABLY SIMILAR AND SEEMINGLY
REASONABLE LARGER SCALE FLOW PATTERN FROM THE ERN PACIFIC ACROSS
NORTH AMERICA.  THIS FLOW IS  HIGHLIGHTED AT MID-LATITUDES BY MEAN
MID-UPPER LEVEL TROUGHS JUST OFF THE US WEST COAST AND OVER THE
NERN US...SANDWICHING A VERY HOT AND PERSISTENT SUMMERTIME RIDGE
EXPANDED OUT FROM THE CENTRAL US. THIS IS ESSENTIALLY AN EXTENSION
OF THE SHORT TERM WEATHER PATTERN TO A LARGE DEGREE WITH SLIGHT
RETROGRESSION OF THE UPPER RIDGE.

HPC D3-7 PROGS SHOW RETREATING SFC HIGH MON FOLLOWED BY PCPN
CHANCES ASSOCD WITH FRONTAL SYSTEM AROUND MID-WEEK.

&&

.AVIATION /20Z FRIDAY THROUGH WEDNESDAY/...
EXPECT A CONTINUATION OF MAINLY VFR CONDITIONS TODAY INTO SATURDAY
A VERY SUMMER-LIKE AIRMASS REMAINS IN PLACE OVER THE FCST AREA.
EXCEPTIONS WILL BE LATER TONIGHT THRU JUST AFTER DAWN SATURDAY AS
SOME THIN FOG OR HAZE DROPS VIS TO BETWEEN 3-5 MILES IN SOME
AREAS. THIS SHUD IMPROVE BY MID MORNING AS WE MIX OUT.

A GUSTY NW BREEZE THIS AFTERNOON AT MOST TERMINALS WILL RETURN TO
MAINLY LIGHT AND VARIABLE WINDS OVERNIGHT.

SATURDAY AFTERNOON HAS THE POSSIBILITY OF LOCALLY REDUCED
CONDITIONS WITH THE EXPECTATIONS OF SOME DIURNAL SHOWERS AND
STORMS DEVELOPING. TIMING AND LOCATION REMAIN QUESTIONABLE...BUT
REDUCED CONDITIONS WOULD REMAIN A POSSIBILITY INTO THE EVENING
WITH ANY ACTIVITY THAT DOES MANAGE TO FORM.

OUTLOOK...

FRI NIGHT...MAINLY VFR. ISOLD SHOWERS/TSTMS WITH LOCAL
RESTRICTIONS.

SAT-MON...MAINLY VFR. SLIGHT CHC OF A SHOWER/TSTM. FOG AND HZ
EARLY.

TUES...MAINLY VFR BUT WITH RESTRICTIONS IN ANY SHOWERS OR STORMS
THAT FORM.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
HEAT ADVISORY UNTIL 8 PM EDT SATURDAY FOR PAZ028-035-036-056-
057-059-063>066.

&&

SYNOPSIS...LA CORTE
NEAR TERM...LA CORTE
SHORT TERM...LA CORTE
LONG TERM...STEINBUGL
AVIATION...LA CORTE

Hazardous weather outlook, Jun 29, 6:51 PM EDT, 1 hour 31 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
651 PM EDT FRI JUN 29 2012

PAZ004>006-037-302300-
WARREN-MCKEAN-POTTER-TIOGA-
651 PM EDT FRI JUN 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ010>012-017>019-024>027-041-042-045-046-049>053-058-302300-
ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE-
SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-NORTHERN LYCOMING-
SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
651 PM EDT FRI JUN 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE ON SATURDAY.

PAZ033-034-302300-
SOMERSET-BEDFORD-
651 PM EDT FRI JUN 29 2012

...SEVERE THUNDERSTORM WATCH 438 IN EFFECT UNTIL 1 AM EDT SATURDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

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

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO RELAY REPORTS OF SEVERE WEATHER TO THE
NATIONAL WEATHER SERVICE IN STATE COLLEGE USING STANDARD PROCEDURES.

PAZ035-036-302300-
FULTON-FRANKLIN-
651 PM EDT FRI JUN 29 2012

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...
...SEVERE THUNDERSTORM WATCH 438 IN EFFECT UNTIL 1 AM EDT SATURDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

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

   HEAT ADVISORY.
   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

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

   HEAT ADVISORY.

THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO RELAY REPORTS OF SEVERE WEATHER TO THE
NATIONAL WEATHER SERVICE IN STATE COLLEGE USING STANDARD PROCEDURES.

PAZ028-056-057-059-063>066-302300-
JUNIATA-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
651 PM EDT FRI JUN 29 2012

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

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

   HEAT ADVISORY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

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

   HEAT ADVISORY.

THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE ON SATURDAY.

GARTNER/LAMBERT

In the hours before

Special weather statement, Jun 29, 6:39 PM EDT, 1 hour 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
639 PM EDT FRI JUN 29 2012

PAZ024-025-033-034-292345-
BEDFORD PA-BLAIR PA-CAMBRIA PA-SOMERSET PA-
639 PM EDT FRI JUN 29 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN BEDFORD...
NORTHERN SOMERSET...SOUTHWESTERN BLAIR AND SOUTHWESTERN CAMBRIA
COUNTIES...

AT 628 PM EDT...A RAPIDLY DEVELOPING LINE OF STRONG THUNDERSTORMS
WAS LOCATED FROM OGLETOWN TO LAUREL MOUNTAIN...MOVING EAST AT 20 MPH.

WIND GUSTS TO 50 MPH AND UP TO PENNY SIZE HAIL ARE POSSIBLE WITH
THESE STORMS. THESE STORMS WILL AFFECT OSTERBURG...CESSNA...
BEDFORD...AND JEROME...WESTMONT...LORAIN...JOHNSTOWN...AND
ELIM...NEW ENTERPRISE AND EVERETT.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 100 AND 163...I-70 BETWEEN
MILE MARKERS 147 AND 150...I-99 BETWEEN MILE MARKERS 0 AND 20.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...THE JOHNSTOWN
EXPRESSWAY...ROUTE 30...ROUTE 219...ROUTE 220...STATE ROAD 56.

LAT...LON 4012 7921 4013 7918 4015 7917 4039 7898
      4037 7863 4032 7825 4026 7825 4022 7822
      3999 7822 3996 7823 3995 7824 4004 7930
      4005 7930

FORECASTER: LAMBERT

Special weather statement, Jun 29, 7:28 PM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
728 PM EDT FRI JUN 29 2012

PAZ026-034-035-300030-
BEDFORD PA-FULTON PA-HUNTINGDON PA-
728 PM EDT FRI JUN 29 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN BEDFORD...
NORTHEASTERN FULTON AND SOUTHWESTERN HUNTINGDON COUNTIES THROUGH 830
PM EDT...

AT 724 PM EDT...A STRONG THUNDERSTORM WAS NEAR SAXTON...MOVING EAST
AT 30 MPH.

WIND GUSTS TO 45 MPH AND MARBLE SIZE HAIL ARE POSSIBLE WITH THIS
STORM. EXPECT FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM
THIS STORM. DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES
WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM
APPROACHES. THIS STORM WILL AFFECT WATERFALL...SALTILLO AND
ORBISONIA.

THIS WILL IMPACT THE PENNSYLVANIA TURNPIKE NEAR MILE MARKER 186.

THIS WILL ALSO IMPACT ROUTE 522.

LAT...LON 4024 7826 4027 7826 4028 7827 4033 7824
      4036 7792 4014 7785 4009 7785 4007 7842

FORECASTER: LAMBERT

Special weather statement, Jun 29, 7:54 PM EDT, 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
754 PM EDT FRI JUN 29 2012

PAZ024>026-033-034-300115-
BEDFORD PA-BLAIR PA-CAMBRIA PA-HUNTINGDON PA-SOMERSET PA-
754 PM EDT FRI JUN 29 2012

...NUMEROUS STRONG THUNDERSTORMS WILL MOVE EAST AND AFFECT THE
FOLLOWING COUNTIES THROUGH 915 PM EDT...BEDFORD...SOMERSET...
SOUTHWESTERN BLAIR...SOUTHWESTERN CAMBRIA AND WEST CENTRAL
HUNTINGDON...

AT 752 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
JENNERSTOWN TO CENTRAL CITY TO MARTINSBURG...MOVING SOUTHEAST AT 15
MPH.

WIND GUSTS TO 50 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT STAY IN
THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. VERY HEAVY RAIN WILL FALL
FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND FILL
POOR DRAINAGE AREAS. THE RAIN WILL CAUSE RAPID RISES ON SMALL STREAMS
AND CREEKS. THESE STORMS WILL AFFECT ADDISON...WOODBURY...AND
OSTERBURG...ACOSTA...ROCKWOOD...CASSELMAN...AND SHY BEAVER...
SOMERSET...MOUNT DAVIS AND SAXTON.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 100 AND 158...I-99 BETWEEN
MILE MARKERS 0 AND 21.

LAT...LON 3971 7939 3972 7940 3973 7940 3982 7937
      3985 7942 3990 7941 4009 7926 4012 7921
      4013 7918 4039 7897 4034 7817 4004 7826
      3972 7860

FORECASTER: LAMBERT

Special weather statement, Jun 29, 8:22 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
822 PM EDT FRI JUN 29 2012

PAZ026>028-300100-
HUNTINGDON PA-JUNIATA PA-MIFFLIN PA-
822 PM EDT FRI JUN 29 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN HUNTINGDON...
SOUTHWESTERN JUNIATA AND SOUTHWESTERN MIFFLIN COUNTIES...

AT 820 PM EDT...A STRONG THUNDERSTORM WAS NEAR TROUGH CREEK STATE
PARK...MOVING EAST AT 25 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT MOUNT UNION AND NEWTON HAMILTON.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 22...ROUTE
22/522...ROUTE 522.

LAT...LON 4036 7812 4048 7776 4038 7767 4028 7771
      4026 7811

FORECASTER: EVANEGO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:12 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	78 min
Jun 29, 8:42 PM EDT	Special Weather Statement	CTP	Franklin, Fulton	63 min
Jun 29, 8:57 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Bedford, Cumberland, Franklin, Fulton	78 min
Jun 29, 9:44 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	76 min
Jun 29, 10:05 PM EDT	Special Weather Statement	CTP	Lancaster	55 min
Jun 29, 10:53 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Lancaster, York	52 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every special weather statement 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.