Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 321, NWS Pittsburgh, PA

August 13, 1995Lawrence County, Pennsylvania; Columbiana County, Ohio

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 13, 1995, 10:25 PM EDT for Lawrence County, Pennsylvania; Columbiana County, Ohio. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Aug 13, 1995, 10:25 PM EDT (02:25 UTC)
Expired: Aug 13, 1995, 11:30 PM EDT
In force: 65 min
Issued by: NWS Pittsburgh, PA
Area: Whole counties

Counties Columbiana County, OH, Lawrence County, PA

The radar

The Pittsburgh radar (KPBZ), 48 km from the middle of the area, began a volume at 02:28 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 00:00Z, 2.4 hours before the alert went out and 65 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: 2947 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1095 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Aug 13, 8:14 PM EDT, 2 hours 11 minutes before

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Special weather statement, Aug 13, 8:15 PM EDT, 2 hours 10 minutes before

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Special weather statement, Aug 13, 9:04 PM EDT, 1 hour 21 minutes before

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Special weather statement, Aug 13, 9:05 PM EDT, 1 hour 20 minutes before

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Special weather statement, Aug 13, 10:05 PM EDT, 20 minutes before

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<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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      <p id="message2">
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 9:32 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	88 min
Aug 13, 9:48 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana	57 min
Aug 13, 10:25 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	65 min
Aug 13, 10:47 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	28 min
Aug 13, 11:03 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll	57 min
Aug 13, 11:09 PM EDT	Flash Flood Warning	PBZ	Tucker	4 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1995 Severe Thunderstorm Warnings in Ohio, 1995 Every severe thunderstorm warning in 1995

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.