Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS State College, PA

June 28, 2021Somerset County, Pennsylvania

NWS State College, PA issued this special weather statement at Jun 28, 2021, 6:16 PM EDT for Somerset County, Pennsylvania. It was in force for 29 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
Jun 28, 2021, 6:16 PM EDT (22:16 UTC)
Expired
Jun 28, 2021, 6:45 PM EDT
In force
29 min
Issued by
NWS State College, PA

County Somerset County, PA

The radar

The Pittsburgh radar (KPBZ), 132 km from the middle of the area, began a volume at 22:16 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, 10.3 hours before the alert went out and 117 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, Pittsburgh, PA at 12:00Z on 2021-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 188 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, Pittsburgh, PA at 12:00Z on 2021-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
188 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1100 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
38 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 Jun 28, 5:24 PM EDT, 52 minutes earlier.

Area forecast discussion, Jun 28, 5:24 PM EDT, 52 minutes before
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Hazardous weather outlook, Jun 28, 4:35 AM EDT, 13 hours 41 minutes before
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<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.
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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, Jun 28, 6:16 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service State College PA
616 PM EDT Mon Jun 28 2021

PAZ033-282245-
Somerset PA-
616 PM EDT Mon Jun 28 2021

...A STRONG THUNDERSTORM WILL SOUTHERN SOMERSET COUNTY UNTIL 645 PM
EDT...

At 614 PM EDT, Doppler radar indicated a cluster of strong
thunderstorms near Berlin and Salisbury, moving northeast at 15 mph.

Wind gusts of 50 to 55 mph are possible. Winds this strong can blow
down large branches and upset loose outdoor objects.

Additional locations impacted include...

Meyersdale, Garrett, Indian Lake, Shanksville, Wellersburg, New
Baltimore, Callimont and the Flight 93 National Memorial.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3973 7918 4010 7893 4007 7875 4006 7876
      3983 7875 3972 7881
TIME...MOT...LOC 2214Z 227DEG 12KT 3987 7897

Dangelo

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 6:58 PM EDTSpecial Weather StatementCTPSomerset47 min

Nearby

Special Weather Statements in Pennsylvania, 2021Every 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.