Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 340, NWS Norman, OK

June 13, 20234 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 2023, 9:17 PM CDT for 4 counties in Oklahoma. It was in force for 43 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 13, 2023, 9:17 PM CDT (02:17 UTC)
Expired: Jun 13, 2023, 10:00 PM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Damage threat: Considerable
Hail: 2.0 in
Wind: 70.0 mph

Counties Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 65 km from the middle of the area, began a volume at 02:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 13, 7:53 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.3 hours before the alert went out and 210 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: 1088 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1499 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 10.5

Open this sounding in Storm Lab

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 13, 6:20 PM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, Jun 13, 6:20 PM CDT, 2 hours 57 minutes before

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Hazardous weather outlook, Jun 13, 7:20 PM CDT, 1 hour 57 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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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:41 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Beckham, Greer, Harmon	49 min
Jun 13, 9:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Greer, Jackson, Kiowa, Tillman	50 min
Jun 13, 10:37 PM CDT	Special Weather Statement	OUN	Tillman	23 min
Jun 13, 11:01 PM CDT	Special Weather Statement	OUN	Cotton	29 min
Jun 13, 11:24 PM CDT	Special Weather Statement	OUN	Cotton	51 min
Jun 13, 11:31 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	24 min
Jun 13, 11:36 PM CDT	Special Weather Statement	OUN	Kay	24 min
Jun 14, 12:47 AM CDT	Special Weather Statement	OUN	Kay	28 min
Jun 14, 5:00 AM CDT	Special Weather Statement	OUN	Kay	30 min
Jun 14, 6:09 AM CDT	Dense Fog Advisory	OUN	Comanche, Cotton, Jefferson, Kiowa, Tillman	3 hr
Jun 14, 8:30 AM CDT	Special Weather Statement	OUN	Love	30 min
Jun 14, 8:59 AM CDT	Special Weather Statement	OUN	Love, Marshall	31 min
Jun 14, 9:06 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Love, Marshall	39 min
Jun 14, 9:42 AM CDT	Special Weather Statement	OUN	Bryan	33 min
Jun 14, 10:04 AM CDT	Severe Thunderstorm Warning	OUN	Bryan	41 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023 Every severe thunderstorm warning in 2023

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.