Alert archive / Pennsylvania / Special Weather Statements in 2015

Special Weather Statement, NWS State College, PA

April 20, 2015Clearfield County, Pennsylvania

NWS State College, PA issued this special weather statement at Apr 20, 2015, 4:49 PM EDT for Clearfield County, Pennsylvania. It was in force for 41 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: Apr 20, 2015, 4:49 PM EDT (20:49 UTC)
Expired: Apr 20, 2015, 5:30 PM EDT
In force: 41 min
Issued by: NWS State College, PA

County Clearfield County, PA

The radar

The State College radar (KCCX), 59 km from the middle of the area, began a volume at 20:49 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 (KAGC), launched 12:00Z, 8.8 hours before the alert went out and 126 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: 2 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 288 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.

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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 Apr 20, 3:34 PM EDT, 1 hour 15 minutes earlier.

Area forecast discussion, Apr 20, 3:34 PM EDT, 1 hour 15 minutes before

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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Apr 20, 3:28 PM EDT, 1 hour 21 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
328 PM EDT MON APR 20 2015

PAZ004>006-010>012-017>019-037-041-042-045-046-049>053-058-211930-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-SCHUYLKILL-
328 PM EDT MON APR 20 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND THROUGH EARLY THIS EVENING. THE MAIN SEVERE THREAT WILL BE
LOCALIZED STRAIGHT-LINE...DOWNBURST WIND DAMAGE IN THE VICINITY OF
BOW ECHOES.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

PAZ024>028-033>036-056-057-059-063>066-211930-
CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON-
FRANKLIN-PERRY-DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
328 PM EDT MON APR 20 2015

...TORNADO WATCH 90 IN EFFECT UNTIL 10 PM EDT THIS EVENING...

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.

   TORNADO WATCH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Apr 20, 3:20 PM EDT, 1 hour 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
320 PM EDT MON APR 20 2015

PAZ004-005-010-201945-
WARREN PA-MCKEAN PA-ELK PA-
320 PM EDT MON APR 20 2015

...A STRONG THUNDERSTORM WILL AFFECT WARREN...MCKEAN...AND ELK
COUNTIES UNTIL 345 PM EDT...

AT 319 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
LYNCH...MOVING NORTHEAST AT 50 MPH.

40 MPH WIND GUSTS WILL BE POSSIBLE WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  SHEFFIELD AROUND 330 PM EDT.
  KANE...WETMORE AND JAMES CITY AROUND 335 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LEWIS RUN...BRADFORD
AIRPORT AND MOUNT JEWETT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4180 7854 4145 7906 4153 7896 4162 7896
      4163 7919 4199 7880
TIME...MOT...LOC 1919Z 223DEG 43KT 4157 7909

LA CORTE

Special weather statement, Apr 20, 3:47 PM EDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
347 PM EDT MON APR 20 2015

PAZ005-202015-
MCKEAN PA-
347 PM EDT MON APR 20 2015

...A STRONG THUNDERSTORM WILL AFFECT MCKEAN COUNTY UNTIL 415 PM
EDT...

AT 345 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
WESTLINE...MOVING NORTHEAST AT 50 MPH.

40 MPH WIND GUSTS WILL BE POSSIBLE WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  KINZUA BRIDGE STATE PARK AROUND 350 PM EDT.
  CYCLONE AROUND 355 PM EDT.
  BRADFORD AND REW AROUND 400 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LEWIS RUN...UNIVERSITY
OF PITTSBURGH - BRADFORD...ELDRED...MOUNT JEWETT AND BRADFORD
AIRPORT.

LAT...LON 4200 7821 4163 7869 4177 7886 4200 7867
TIME...MOT...LOC 1947Z 217DEG 51KT 4179 7870

RXR

Special weather statement, Apr 20, 4:49 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
449 PM EDT MON APR 20 2015

PAZ017-018-024-202130-
CLEARFIELD PA-CAMBRIA PA-NORTHERN CENTRE PA-
449 PM EDT MON APR 20 2015

...A STRONG THUNDERSTORM WILL AFFECT CLEARFIELD...CAMBRIA...AND
NORTHERN CENTRE COUNTIES UNTIL 530 PM EDT...

AT 447 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR
CHERRY TREE...MOVING NORTHEAST AT 45 MPH.

40 MPH WIND GUSTS AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  CURWENSVILLE AND JEFFRIES AROUND 520 PM EDT.
  CLEARFIELD AND HYDE AROUND 525 PM EDT.
  WOODLAND AND PLYMPTONVILLE AROUND 530 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE LUMBER CITY...
BRISBIN...CLEARFIELD-LAWRENCE AIRPORT...CHERRY TREE AND COALPORT.

FOR THOSE DRIVING ON INTERSTATE 80...THIS INCLUDES AREAS BETWEEN THE
DUBOIS ROUTE 255 AND KYLERTOWN EXITS...SPECIFICALLY FROM MILE MARKERS
110 TO 128.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH IS IN EFFECT FOR THE SOUTHERN HALF PENNSYLVANIA
UNTIL 10 PM TONIGHT.

CENTRAL PENNSYLVANIA.

LAT...LON 4072 7881 4072 7880 4085 7881 4120 7847
      4086 7811 4056 7880 4061 7886
TIME...MOT...LOC 2047Z 229DEG 38KT 4070 7879

LAMBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 3:20 PM EDT	Special Weather Statement	CTP	McKean	25 min
Apr 20, 3:47 PM EDT	Special Weather Statement	CTP	McKean	28 min
Apr 20, 4:52 PM EDT	Special Weather Statement	CTP	Lebanon	38 min
Apr 20, 5:00 PM EDT	Special Weather Statement	CTP	Franklin, Fulton	45 min
Apr 20, 5:15 PM EDT	Special Weather Statement	CTP	Cambria, Clearfield	60 min
Apr 20, 5:25 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	65 min
Apr 20, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Elk	62 min
Apr 20, 5:42 PM EDT	Special Weather Statement	CTP	McKean	33 min
Apr 20, 6:18 PM EDT	Special Weather Statement	CTP	Blair	42 min
Apr 20, 6:22 PM EDT	Special Weather Statement	CTP	McKean	38 min
Apr 20, 6:23 PM EDT	Special Weather Statement	CTP	Perry	52 min
Apr 20, 6:30 PM EDT	Special Weather Statement	CTP	Huntingdon	30 min
Apr 20, 6:31 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Huntingdon	59 min
Apr 20, 6:48 PM EDT	Special Weather Statement	CTP	Bedford, Franklin, Fulton, Somerset	57 min
Apr 20, 6:48 PM EDT	Tornado Warning	CTP	Cumberland, Franklin	42 min
Apr 20, 7:02 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming	58 min
Apr 20, 7:09 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	66 min
Apr 20, 7:19 PM EDT	Special Weather Statement	CTP	Potter	41 min
Apr 20, 7:21 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Huntingdon, Mifflin	54 min
Apr 20, 7:21 PM EDT	Tornado Warning	CTP	Cumberland, Perry	54 min
Apr 20, 7:22 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon, Mifflin, Union	53 min
Apr 20, 7:32 PM EDT	Severe Thunderstorm Warning	CTP	Fulton, Huntingdon	58 min
Apr 20, 7:40 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	65 min
Apr 20, 7:42 PM EDT	Severe Thunderstorm Warning	CTP	Potter, Tioga	42 min
Apr 20, 7:56 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Fulton, Perry	64 min
Apr 20, 7:58 PM EDT	Areal Flood Advisory	CTP	Centre	3 hr
Apr 20, 7:58 PM EDT	Special Weather Statement	CTP	Cambria	32 min
Apr 20, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Perry	61 min

Nearby

Special Weather Statements in Pennsylvania, 2015 Every special weather statement in 2015

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.