Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 467, NWS Norman, OK

June 27, 2001Custer County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 27, 2001, 6:50 PM CDT for Custer County, Oklahoma. It was in force for 25 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 27, 2001, 6:50 PM CDT (23:50 UTC)
Expired: Jun 27, 2001, 7:15 PM CDT
In force: 25 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Custer County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 27, 6:56 PM CDT	Hail 0.75	Thomas, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.8 hours before the alert went out and 152 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: 1226 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1120 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.5

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 2:00 PM CDT, 4 hours 50 minutes earlier.

Area forecast discussion, Jun 27, 2:00 PM CDT, 4 hours 50 minutes before

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In the hours before

Special weather statement, Jun 27, 1:00 PM CDT, 5 hours 50 minutes before

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  <meta charset="utf-8">
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  <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.
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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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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 9:10 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	50 min
Jun 27, 9:43 AM CDT	Severe Thunderstorm Warning	OUN	Johnston	47 min
Jun 27, 9:57 AM CDT	Flash Flood Warning	OUN	Cleveland, Oklahoma, Pottawatomie	3 hr
Jun 27, 10:01 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	44 min
Jun 27, 10:38 AM CDT	Severe Thunderstorm Warning	OUN	Johnston	52 min
Jun 27, 11:08 AM CDT	Severe Thunderstorm Warning	OUN	Logan	52 min
Jun 27, 11:12 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	48 min
Jun 27, 11:16 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	59 min
Jun 27, 11:19 AM CDT	Flash Flood Warning	OUN	Johnston	3 hr
Jun 27, 12:11 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	49 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.