Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

July 27, 2012Potter County, Pennsylvania

NWS State College, PA issued this special weather statement at Jul 27, 2012, 6:42 PM EDT for Potter County, Pennsylvania. It was in force for 63 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: Jul 27, 2012, 6:42 PM EDT (22:42 UTC)
Expired: Jul 27, 2012, 7:45 PM EDT
In force: 63 min
Issued by: NWS State College, PA

County Potter County, PA

The radar

The State College radar (KCCX), 106 km from the middle of the area, began a volume at 22:45 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

Pittsburgh, PA (KPIT), launched 12:00Z, 10.7 hours before the alert went out and 240 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: 224 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Jul 27, 6:00 PM EDT, 42 minutes earlier.

Area forecast discussion, Jul 27, 6:00 PM EDT, 42 minutes before

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Hazardous weather outlook, Jul 27, 4:39 PM EDT, 2 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
439 PM EDT FRI JUL 27 2012

PAZ004>006-011-012-018-019-025>028-034>037-041-042-045-046-049>053-
056>059-063-064-282045-
WARREN-MCKEAN-POTTER-CAMERON-NORTHERN CLINTON-NORTHERN CENTRE-
SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON-
FRANKLIN-TIOGA-NORTHERN LYCOMING-SULLIVAN-SOUTHERN CLINTON-
SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-
DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-
439 PM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

SCATTERED STRONG THUNDERSTORMS WILL FORM THIS AFTERNOON ALONG AND
AHEAD OF A SLOW MOVING COLD FRONT...THAT WILL BE DRIFTING
SOUTHEAST ACROSS THE STATE.

SOME OF THE STORMS WILL CONTAIN GUSTY WINDS OF 40 TO 50 MPH...SMALL
HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING.

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

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ065-066-282045-
YORK-LANCASTER-
439 PM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
THIS EVENING. THE PRIMARY SEVERE WEATHER THREAT WILL BE IN THE
FORM OF LOCALIZED DOWNBURST WIND GUSTS AROUND 60 MPH...AND HAIL
UP TO ONE INCH IN DIAMETER.

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

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ010-017-024-033-282045-
ELK-CLEARFIELD-CAMBRIA-SOMERSET-
439 PM EDT FRI JUL 27 2012

...FLASH FLOOD WATCH IN EFFECT UNTIL 4 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.

   FLASH FLOOD WATCH.

SCATTERED STRONG THUNDERSTORMS WILL FORM THIS AFTERNOON ALONG AND
AHEAD OF A SLOW MOVING COLD FRONT. THAT FRONT WILL BE DRIFTING
SOUTHEAST ACROSS THE STATE AND COULD ALLOW FOR HEAVY DOWNPOURS WHICH
MAY LEAD TO POSSIBLE FLOODING.

SOME OF THE STORMS WILL CONTAIN GUSTY WINDS OF 40 TO 50 MPH...SMALL
HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING.

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

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 27, 3:55 PM EDT, 2 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
355 PM EDT FRI JUL 27 2012

PAZ011-012-017>019-024-045-272030-
CAMBRIA PA-CAMERON PA-CLEARFIELD PA-NORTHERN CENTRE PA-
NORTHERN CLINTON PA-SOUTHERN CENTRE PA-SOUTHERN CLINTON PA-
355 PM EDT FRI JUL 27 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CLEARFIELD...
NORTHEASTERN CAMBRIA...SOUTHEASTERN CAMERON...WESTERN CENTRE AND
WESTERN CLINTON COUNTIES...

AT 353 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
WESTPORT TO LECONTES MILLS TO MAHAFFEY...MOVING SOUTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS. THESE STORMS
WILL AFFECT RENOVO...HYNER...SNOW SHOE AND BALD EAGLE STATE PARK.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...
I-80 BETWEEN MILE MARKERS 114 AND 157...I-99 BETWEEN MILE MARKERS 61
AND 67.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 219...ROUTE
220...ALTERNATE ROUTE 220...ROUTE 322...STATE ROAD 120...STATE ROAD
350.

LAT...LON 4114 7747 4081 7800 4074 7820 4073 7836
      4072 7835 4066 7839 4063 7848 4090 7882
      4096 7881 4112 7839 4145 7785

FORECASTER: JUNG

Special weather statement, Jul 27, 4:20 PM EDT, 2 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
420 PM EDT FRI JUL 27 2012

PAZ041-042-046-051>053-272115-
COLUMBIA PA-MONTOUR PA-NORTHERN LYCOMING PA-NORTHUMBERLAND PA-
SOUTHERN LYCOMING PA-SULLIVAN PA-
420 PM EDT FRI JUL 27 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT LYCOMING...NORTHERN
MONTOUR...NORTHWESTERN COLUMBIA...NORTHWESTERN NORTHUMBERLAND AND
SOUTHERN SULLIVAN COUNTIES THROUGH 515 PM EDT...

AT 416 PM EDT...SEVERAL STRONG THUNDERSTORMS WERE LOCATED ALONG A
LINE FROM PICTURE ROCKS TO TROUT RUN...MOVING SOUTHEAST AT 25 MPH.

WIND GUSTS TO 45 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. THESE STORMS WILL AFFECT LAIRDSVILLE...BIGGERTOWN...
WILLIAMSPORT...MILLVILLE...ORANGEVILLE AND TURBOTVILLE.

THIS WILL IMPACT I-180 BETWEEN MILE MARKERS 1 AND 29.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 15...ROUTE
220...STATE ROAD 14...STATE ROAD 118.

LAT...LON 4110 7634 4102 7648 4105 7686 4114 7690
      4115 7696 4113 7697 4113 7703 4129 7725
      4149 7735 4145 7693 4145 7663 4131 7649

FORECASTER: LAMBERT

Special weather statement, Jul 27, 5:31 PM EDT, 1 hour 11 minutes before

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Special weather statement, Jul 27, 5:48 PM EDT, 54 minutes before

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Special weather statement, Jul 27, 5:57 PM EDT, 45 minutes before

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Special weather statement, Jul 27, 6:42 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 10:05 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, York	3 hr
Jul 27, 1:12 PM EDT	Special Weather Statement	CTP	Warren	78 min
Jul 27, 2:15 PM EDT	Special Weather Statement	CTP	Cameron, Elk	75 min
Jul 27, 3:18 PM EDT	Special Weather Statement	CTP	Warren	57 min
Jul 27, 3:37 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	53 min
Jul 27, 3:46 PM EDT	Special Weather Statement	CTP	Lycoming	59 min
Jul 27, 3:55 PM EDT	Special Weather Statement	CTP	Centre, Clearfield, Clinton	35 min
Jul 27, 4:06 PM EDT	Flash Flood Watch	CTP	Cambria, Clearfield, Elk, Somerset	12 hr
Jul 27, 4:20 PM EDT	Special Weather Statement	CTP	Lycoming	55 min
Jul 27, 4:34 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon	56 min
Jul 27, 4:38 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	52 min
Jul 27, 5:31 PM EDT	Special Weather Statement	CTP	Snyder, Union	29 min
Jul 27, 5:48 PM EDT	Special Weather Statement	CTP	McKean	57 min
Jul 27, 5:57 PM EDT	Special Weather Statement	CTP	Columbia, Montour, Northumberland, Snyder	33 min
Jul 27, 7:45 PM EDT	Special Weather Statement	CTP	Potter	30 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.