Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 170, NWS Norman, OK

May 10, 1992Canadian County, Grady County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 10, 1992, 7:56 PM CDT for Canadian County, Grady County, Oklahoma. It was in force for 49 min. 3 reports 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: May 10, 1992, 7:56 PM CDT (00:56 UTC)
Expired: May 10, 1992, 8:45 PM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Canadian County, OK, Grady County, OK

What was reported inside it

Time	Report	Where
May 10, 8:18 PM CDT	Hail 0.88	Grady, OK
May 10, 8:20 PM CDT	Hail 0.88	Canadian, OK
May 10, 8:38 PM CDT	Hail 1	Canadian, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.9 hours before the alert went out and 49 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: 900 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1285 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.4

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, May 10, 6:50 PM CDT, 1 hour 6 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 10, 6:58 PM CDT, 58 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 10, 7:02 PM CDT, 54 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, May 10, 7:29 PM CDT, 27 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 10, 7:32 PM CDT, 24 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, May 10, 7:41 PM CDT, 15 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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:12 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	63 min
May 10, 8:36 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	54 min
May 10, 8:42 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	48 min
May 10, 9:24 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	66 min
May 10, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	60 min
May 10, 10:18 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie	57 min
May 11, 1:15 PM CDT	Severe Thunderstorm Warning	OUN	McClain, Pontotoc, Pottawatomie, Seminole	45 min
May 11, 1:22 PM CDT	Severe Thunderstorm Warning	OUN	Murray	53 min
May 11, 1:29 PM CDT	Tornado Warning	OUN	Garvin, Pontotoc	31 min
May 11, 1:39 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	51 min
May 11, 1:45 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Payne	60 min
May 11, 1:45 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	60 min
May 11, 1:55 PM CDT	Tornado Warning	OUN	Pontotoc	50 min
May 11, 2:15 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	60 min
May 11, 2:21 PM CDT	Severe Thunderstorm Warning	OUN	Love	69 min
May 11, 2:37 PM CDT	Severe Thunderstorm Warning	OUN	Johnston, Murray	68 min
May 11, 2:45 PM CDT	Tornado Warning	OUN	Coal, Pontotoc	45 min
May 11, 3:15 PM CDT	Severe Thunderstorm Warning	OUN	Hughes	45 min
May 11, 3:26 PM CDT	Severe Thunderstorm Warning	OUN	Love, Marshall	64 min
May 11, 3:45 PM CDT	Tornado Warning	OUN	Coal	45 min
May 11, 4:19 PM CDT	Tornado Warning	OUN	Atoka	36 min
May 11, 4:27 PM CDT	Tornado Warning	OUN	Bryan	48 min
May 11, 4:30 PM CDT	Severe Thunderstorm Warning	OUN	Coal	60 min
May 11, 4:37 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	68 min
May 11, 4:50 PM CDT	Severe Thunderstorm Warning	OUN	Atoka	55 min
May 11, 4:58 PM CDT	Tornado Warning	OUN	Kay	47 min
May 11, 5:03 PM CDT	Tornado Warning	OUN	Bryan	42 min
May 11, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Marshall	54 min
May 11, 5:21 PM CDT	Severe Thunderstorm Warning	OUN	Pushmataha	69 min
May 11, 5:44 PM CDT	Severe Thunderstorm Warning	OUN	Choctaw	61 min
May 11, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Kay	30 min
May 11, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	47 min
May 11, 6:28 PM CDT	Severe Thunderstorm Warning	OUN	Pushmataha	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1992 Every severe thunderstorm warning in 1992

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.