Alert archive / Oklahoma / Mesoscale Discussions in 2014

Mesoscale Discussion 1853

October 12, 20145 counties in Kansas; 24 counties in Oklahoma; 14 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Oct 12, 2014, 3:09 PM CDT for 5 counties in Kansas; 24 counties in Oklahoma; 14 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Oct 12, 2014, 3:09 PM CDT (20:09 UTC)
Expired: Oct 12, 2014, 4:45 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 43 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Meade County, KS, Seward County, KS, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Foard County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 142 km from the middle of the area, began a volume at 20:12 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 528Oct 12, 3:50 PM CDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.2 hours before the alert went out and 189 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1460 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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>

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 12, 3:48 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Harper, Meade, Seward	7 hr
Oct 12, 5:51 PM CDT	Mesoscale Discussion	SPC	Chautauqua, Cowley, Elk, Labette, Montgomery	114 min
Oct 12, 6:37 PM CDT	Mesoscale Discussion	SPC	Comanche	53 min
Oct 12, 2:27 PM CDT	Mesoscale Discussion	SPC	Cimarron, Texas	2 hr
Oct 12, 3:50 PM CDT	Mesoscale Discussion	SPC	Angelina, Austin, Colorado, Fort Bend, Grimes, Hardin and 15 more	85 min
Oct 12, 5:39 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coleman, Comanche, Concho, Eastland and 11 more	96 min

Nearby

Mesoscale Discussions in Oklahoma, 2014 Mesoscale Discussions in Texas, 2014 Mesoscale Discussions in Kansas, 2014 Every mesoscale discussion in 2014

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.