Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 25, NWS State College, PA

May 10, 2013Warren County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 10, 2013, 4:06 PM EDT for Warren County, Pennsylvania. It was in force for 69 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 10, 2013, 4:06 PM EDT (20:06 UTC)
Expired
May 10, 2013, 5:15 PM EDT
In force
69 min
Issued by
NWS State College, PA
Area
Storm-based polygon

County Warren County, PA

The radar

The Buffalo radar (KBUF), 134 km from the middle of the area, began a volume at 20:10 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 12:00Z, 8.1 hours before the alert went out and 133 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 12:00Z on 2013-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2013-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2256 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 10, 2:36 PM EDT, 1 hour 30 minutes earlier.

Area forecast discussion, May 10, 2:36 PM EDT, 1 hour 30 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, May 10, 3:36 PM EDT, 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
336 PM EDT FRI MAY 10 2013

PAZ004>006-010>012-017-018-024-033-037-041-042-111945-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-CAMBRIA-SOMERSET-TIOGA-NORTHERN LYCOMING-SULLIVAN-
336 PM EDT FRI MAY 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS
AFTERNOON AND EVENING. THE MAIN SEVERE WEATHER THREATS WILL BE
DAMAGING WINDS AND LARGE HAIL.

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

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

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

PAZ019-025>028-034>036-045-046-049>053-056>059-063>066-111945-
SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON-
FRANKLIN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
336 PM EDT FRI MAY 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS
AFTERNOON AND EVENING. THE MAIN SEVERE WEATHER THREATS WILL BE
DAMAGING WINDS AND LARGE HAIL.

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

UNSEASONABLY COLD AIR WILL BRING THE POTENTIAL FOR FROST AND
FREEZING TEMPERATURES EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, May 10, 3:43 PM EDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
343 PM EDT FRI MAY 10 2013

PAZ004-102045-
WARREN PA-
343 PM EDT FRI MAY 10 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN WARREN COUNTY
BETWEEN 4 PM AND 445 PM..

AT 338 PM EDT...A STRONG THUNDERSTORM WAS 7 MILES WEST OF HYDETOWN...
MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT SPRING CREEK AROUND 415 PM...AND SUGAR GROVE
AROUND 440 PM.

THIS WILL IMPACT ROUTE 6.

LAT...LON 4200 7912 4170 7962 4197 7962 4200 7959

FORECASTER: LAMBERT
Special weather statement, May 10, 3:49 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
349 PM EDT FRI MAY 10 2013

PAZ034-102015-
BEDFORD PA-
349 PM EDT FRI MAY 10 2013

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN BEDFORD COUNTY...

AT 349 PM EDT...A STRONG THUNDERSTORM WAS NEAR PLEASANT VALLEY...
MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT RAINSBURG.

THIS WILL IMPACT THE PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 147
AND 148.

THIS WILL ALSO IMPACT ROUTE 220.

LAT...LON 4004 7852 3990 7827 3985 7829 3972 7852
      3972 7873 3972 7874

FORECASTER: STEINBUGL

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 3:43 PM EDTSpecial Weather StatementCTPWarren62 min
May 10, 3:49 PM EDTSpecial Weather StatementCTPBedford26 min
May 10, 5:25 PM EDTSpecial Weather StatementCTPMcKean35 min
May 10, 5:39 PM EDTSpecial Weather StatementCTPWarren36 min
May 10, 5:44 PM EDTSpecial Weather StatementCTPCumberland31 min
May 10, 5:49 PM EDTSpecial Weather StatementCTPElk26 min
May 10, 5:54 PM EDTSpecial Weather StatementCTPBedford36 min
May 10, 5:59 PM EDTSpecial Weather StatementCTPSomerset46 min
May 10, 6:10 PM EDTSpecial Weather StatementCTPBedford35 min
May 10, 6:18 PM EDTSpecial Weather StatementCTPMcKean, Warren42 min
May 10, 6:22 PM EDTSpecial Weather StatementCTPDauphin, Perry38 min
May 10, 6:23 PM EDTSevere Thunderstorm WarningCTPCambria, Clearfield, Somerset37 min
May 10, 6:26 PM EDTSpecial Weather StatementCTPBlair64 min
May 10, 6:29 PM EDTSevere Thunderstorm WarningCTPBlair46 min
May 10, 6:36 PM EDTSpecial Weather StatementCTPClinton39 min
May 10, 6:58 PM EDTSevere Thunderstorm WarningCTPBlair, Centre, Clearfield, Huntingdon62 min
May 10, 7:03 PM EDTSpecial Weather StatementCTPHuntingdon, Mifflin27 min
May 10, 7:06 PM EDTSpecial Weather StatementCTPPotter, Tioga54 min
May 10, 7:20 PM EDTSpecial Weather StatementCTPColumbia, Dauphin, Lancaster, Lebanon, Northumberland, Schuylkill and 1 more40 min
May 10, 7:37 PM EDTSpecial Weather StatementCTPClinton, Lycoming53 min
May 10, 7:56 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Lycoming64 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013Every severe thunderstorm warning in 2013

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.