Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

November 12, 20216 counties in Pennsylvania

NWS State College, PA issued this special weather statement at Nov 12, 2021, 1:09 AM EST for 6 counties in Pennsylvania. It was in force for 81 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: Nov 12, 2021, 1:09 AM EST (06:09 UTC)
Expired: Nov 12, 2021, 2:30 AM EST
In force: 81 min
Issued by: NWS State College, PA
Hail: 0.00 in
Wind: 50

Counties Blair County, PA, Cambria County, PA, Cameron County, PA, Clearfield County, PA, Elk County, PA, McKean County, PA

The radar

The State College radar (KCCX), 52 km from the middle of the area, began a volume at 06:12 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, 6.2 hours before the alert went out and 263 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1411 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 161 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Nov 11, 11:01 PM EST, 2 hours 8 minutes earlier.

Area forecast discussion, Nov 11, 11:01 PM EST, 2 hours 8 minutes before

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  <meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
<body>
  <main class="wrap">
    <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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Hazardous weather outlook, Nov 12, 12:05 AM EST, 1 hour 4 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
1205 AM EST Fri Nov 12 2021

PAZ004>006-010>012-017>019-024>027-033>035-037-041-042-045-046-
130515-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Somerset-Bedford-Fulton-Tioga-Northern Lycoming-Sullivan-
Southern Clinton-Southern Lycoming-
1205 AM EST Fri Nov 12 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ028-036-049>053-056>059-063>066-130515-
Juniata-Franklin-Union-Snyder-Montour-Northumberland-Columbia-Perry-
Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
1205 AM EST Fri Nov 12 2021

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

A narrow squall line may produce a few instances of strong to
locally damaging wind gusts late tonight into the pre dawn hours
Friday morning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MRS

In the hours before

Special weather statement, Nov 12, 1:09 AM EST, 0 minutes before

Special Weather Statement
National Weather Service State College PA
109 AM EST Fri Nov 12 2021

PAZ004>006-010-011-017-018-024-025-033-120730-
McKean PA-Warren PA-Potter PA-Northern Centre PA-Cameron PA-
Somerset PA-Clearfield PA-Blair PA-Cambria PA-Elk PA-
109 AM EST Fri Nov 12 2021

...A LINE OF SHOWERS WITH STRONG WIND GUSTS WILL IMPACT ELK...EASTERN
WARREN...CLEARFIELD...SOUTHWESTERN CENTRE...NORTH CENTRAL SOMERSET...
MCKEAN...WESTERN POTTER...BLAIR...CAMERON AND CAMBRIA COUNTIES
THROUGH 230 AM EST...

At 107 AM EST, Doppler radar was tracking a line of showers with
strong wind gusts along a line extending from near Scandia to near
Reynoldsville to near Jerome. Movement was northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Altoona, Johnstown, St. Marys, Bradford, DuBois, Clearfield,
Hollidaysburg, Tyrone, Westmont, Ridgway, Kane, Ebensburg, Belmont,
Nanty-Glo, Portage, Johnsonburg, Allegany State Park, Sandy, Cameron
and Northern Cambria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4200 7813 4142 7806 4079 7815 4074 7823
      4074 7816 4068 7822 4062 7818 4041 7821
      4019 7909 4072 7880 4114 7880 4120 7876
      4120 7871 4126 7874 4136 7900 4162 7896
      4163 7904 4200 7909
TIME...MOT...LOC 0607Z 246DEG 26KT 4197 7905 4113 7894 4027 7906

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Steinbugl

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 3:17 AM EST	Special Weather Statement	CTP	Cumberland, Franklin	43 min
Nov 12, 4:25 AM EST	Special Weather Statement	CTP	Snyder	35 min
Nov 12, 4:49 AM EST	Special Weather Statement	CTP	Northumberland	26 min
Nov 12, 5:10 AM EST	Special Weather Statement	CTP	Columbia, Montour	35 min

Nearby

Special Weather Statements in Pennsylvania, 2021 Every special weather statement in 2021

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.