Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS State College, PA

August 25, 2011Warren County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 25, 2011, 12:41 AM EDT for Warren County, Pennsylvania. It was in force for 34 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
Aug 25, 2011, 12:41 AM EDT (04:41 UTC)
Expired
Aug 25, 2011, 1:15 AM EDT
In force
34 min
Issued by
NWS State College, PA

County Warren County, PA

The radar

The Buffalo radar (KBUF), 126 km from the middle of the area, began a volume at 04:41 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 4.7 hours before the alert went out and 125 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2011-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 352 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2011-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 327 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
352 J/kg
Mixed-layer CIN
-345 J/kg
Mixed-layer LCL
1391 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
327 m²/s²
0-3 km storm-relative helicity
391 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 Aug 24, 10:53 PM EDT, 1 hour 48 minutes earlier.

Area forecast discussion, Aug 24, 10:53 PM EDT, 1 hour 48 minutes before
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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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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Aug 24, 9:53 PM EDT, 2 hours 48 minutes before
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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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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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In the hours before

Special weather statement, Aug 25, 12:41 AM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1241 AM EDT THU AUG 25 2011

PAZ004-250515-
WARREN PA-
1241 AM EDT THU AUG 25 2011

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN WARREN
COUNTY...

AT 1242 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 7
MILES NORTH OF FREWSBURG TO 13 MILES WEST OF ELGIN...MOVING EAST AT
60 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
THESE STORMS WILL AFFECT COLUMBUS...SUGAR GROVE...RUSSELL AND
YOUNGSVILLE.

LAT...LON 4200 7892 4193 7892 4169 7961 4170 7962
      4200 7961

FORECASTER:

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 12:54 AM EDTSevere Thunderstorm WarningCTPElk, McKean, Potter, Warren66 min
Aug 25, 1:19 AM EDTAreal Flood AdvisoryCTPWarren3 hr
Aug 25, 1:59 AM EDTSpecial Weather StatementCTPMcKean, Warren31 min
Aug 25, 2:30 AM EDTSpecial Weather StatementCTPMcKean, Potter45 min
Aug 25, 2:52 AM EDTSpecial Weather StatementCTPElk23 min
Aug 25, 3:16 AM EDTSevere Thunderstorm WarningCTPCameron, Centre, Clearfield, Clinton, Elk, Lycoming59 min
Aug 25, 3:22 AM EDTSpecial Weather StatementCTPPotter, Tioga53 min
Aug 25, 3:59 AM EDTSpecial Weather StatementCTPWarren31 min
Aug 25, 4:10 AM EDTSpecial Weather StatementCTPClearfield, Clinton, Lycoming65 min
Aug 25, 4:53 AM EDTSpecial Weather StatementCTPLycoming, Sullivan67 min
Aug 25, 4:56 AM EDTSpecial Weather StatementCTPCambria64 min
Aug 25, 5:01 AM EDTSpecial Weather StatementCTPClearfield59 min
Aug 25, 5:55 AM EDTSpecial Weather StatementCTPBedford, Blair, Huntingdon, Juniata, Mifflin, Snyder and 1 more35 min
Aug 25, 6:29 AM EDTSpecial Weather StatementCTPJuniata, Mifflin, Perry, Snyder46 min
Aug 25, 6:32 AM EDTSpecial Weather StatementCTPHuntingdon43 min
Aug 25, 6:46 AM EDTSpecial Weather StatementCTPColumbia, Lycoming, Montour, Northumberland, Schuylkill, Sullivan and 1 more59 min
Aug 25, 7:09 AM EDTSpecial Weather StatementCTPLancaster36 min
Aug 25, 7:16 AM EDTSpecial Weather StatementCTPCumberland, Dauphin, Juniata, Lebanon, Perry59 min
Aug 25, 7:51 AM EDTSpecial Weather StatementCTPAdams, York54 min
Aug 25, 8:04 AM EDTSpecial Weather StatementCTPColumbia26 min

Nearby

Special Weather Statements in Pennsylvania, 2011Every special weather statement in 2011

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.