Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 7, NWS Pittsburgh, PA

April 16, 1993Fayette County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Apr 16, 1993, 2:24 AM EDT for Fayette County, Westmoreland County, Pennsylvania. It was in force for 66 min.

The area

The counties it named.

The facts

Issued: Apr 16, 1993, 2:24 AM EDT (06:24 UTC)
Expired: Apr 16, 1993, 3:30 AM EDT
In force: 66 min
Issued by: NWS Pittsburgh, PA
Area: Whole counties

Counties Fayette County, PA, Westmoreland County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 6.4 hours before the alert went out and 57 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: 2593 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 370 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, Apr 15, 9:25 PM EDT, 4 hours 59 minutes before

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Special weather statement, Apr 16, 12:39 AM EDT, 1 hour 45 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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 12:51 AM EDT	Severe Thunderstorm Warning	PBZ	Butler	39 min
Apr 16, 12:51 AM EDT	Severe Thunderstorm Warning	PBZ	Greene	39 min
Apr 16, 1:35 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	55 min
Apr 16, 1:35 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion	55 min
Apr 16, 2:24 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	66 min
Apr 16, 9:45 AM EDT	Flash Flood Warning	PBZ	Blair, Cambria, Clearfield	4 hr
Apr 16, 9:45 AM EDT	Flash Flood Warning	PBZ	Bedford, Somerset	4 hr
Apr 16, 6:30 PM EDT	Flash Flood Warning	PBZ	Cambria	4 hr
Apr 16, 6:57 PM EDT	Severe Thunderstorm Warning	PBZ	Bedford	33 min
Apr 16, 7:30 PM EDT	Severe Thunderstorm Warning	PBZ	Bedford	30 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1993 Every severe thunderstorm warning in 1993

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.