Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 135, NWS State College, PA

June 30, 1998Potter County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 30, 1998, 5:47 AM EDT for Potter County, Pennsylvania. It was in force for 63 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: Jun 30, 1998, 5:47 AM EDT (09:47 UTC)
Expired: Jun 30, 1998, 6:50 AM EDT
In force: 63 min
Issued by: NWS State College, PA
Area: Whole counties

County Potter County, PA

The radar

The State College radar (KCCX), 92 km from the middle of the area, began a volume at 09:49 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, 9.8 hours before the alert went out and 237 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: 1362 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.9
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.

NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 3:10 AM EDT, 2 hours 37 minutes earlier.

Area forecast discussion, Jun 30, 3:10 AM EDT, 2 hours 37 minutes before

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In the hours before

Special weather statement, Jun 30, 3:55 AM EDT, 1 hour 52 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.
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</body>
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 1:53 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	47 min
Jun 30, 2:23 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	62 min
Jun 30, 2:52 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	33 min
Jun 30, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	61 min
Jun 30, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	60 min
Jun 30, 3:24 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk	31 min
Jun 30, 3:33 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	87 min
Jun 30, 3:34 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	61 min
Jun 30, 3:45 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	60 min
Jun 30, 3:50 PM EDT	Severe Thunderstorm Warning	CTP	Centre	95 min
Jun 30, 4:08 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair	62 min
Jun 30, 4:16 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	34 min
Jun 30, 4:34 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon, Juniata, Mifflin, Snyder	61 min
Jun 30, 4:34 PM EDT	Severe Thunderstorm Warning	CTP	Union	61 min
Jun 30, 4:34 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	51 min
Jun 30, 4:42 PM EDT	Severe Thunderstorm Warning	CTP	Fulton	33 min
Jun 30, 4:46 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	64 min
Jun 30, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	59 min
Jun 30, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	65 min
Jun 30, 5:24 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	61 min
Jun 30, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	78 min
Jun 30, 5:37 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	48 min
Jun 30, 5:55 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	60 min
Jun 30, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland	20 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1998 Every severe thunderstorm warning in 1998

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.