Alert archive / North Carolina / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 33, NWS Raleigh, NC

April 25, 1989Durham County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Apr 25, 1989, 10:28 PM EDT for Durham County, North Carolina. It was in force for 47 min.

The area

The counties it named.

The facts

Issued: Apr 25, 1989, 10:28 PM EDT (02:28 UTC)
Expired: Apr 25, 1989, 11:15 PM EDT
In force: 47 min
Issued by: NWS Raleigh, NC
Area: Whole counties

County Durham County, NC

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.5 hours before the alert went out and 92 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: 497 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1856 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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

Local storm report, Apr 25, 6:43 PM EDT, 3 hours 45 minutes before

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Local storm report, Apr 25, 6:45 PM EDT, 3 hours 43 minutes before

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Local storm report, Apr 25, 7:01 PM EDT, 3 hours 27 minutes before

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Local storm report, Apr 25, 7:09 PM EDT, 3 hours 19 minutes before

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      <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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      <p class="small" id="detail">
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Local storm report, Apr 25, 7:33 PM EDT, 2 hours 55 minutes before

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<head>
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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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      <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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Local storm report, Apr 25, 7:52 PM EDT, 2 hours 36 minutes before

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<head>
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  <title>Service Notice</title>
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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.
      </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>
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The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 25, 8:51 PM EDT	Severe Thunderstorm Warning	RAH	Vance	54 min
Apr 25, 9:54 PM EDT	Severe Thunderstorm Warning	RAH	Person	66 min
Apr 25, 10:40 PM EDT	Severe Thunderstorm Warning	RAH	Johnston	35 min
Apr 25, 11:07 PM EDT	Severe Thunderstorm Warning	RAH	Wake	53 min
Apr 25, 11:44 PM EDT	Severe Thunderstorm Warning	RAH	Johnston	46 min
Apr 26, 12:33 AM EDT	Severe Thunderstorm Warning	RAH	Johnston	42 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1989 Every severe thunderstorm warning in 1989

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.