Alert archive / Arkansas / Mesoscale Discussions in 2015

Mesoscale Discussion 1930

November 5, 20154 states

The Storm Prediction Center issued this mesoscale discussion at Nov 5, 2015, 3:32 PM CST for 4 states. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Nov 5, 2015, 3:32 PM CST (21:32 UTC)
Expired: Nov 5, 2015, 5:00 PM CST
In force: 88 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 48 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, Barry County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Choctaw County, OK, LeFlore County, OK, McCurtain County, OK, Bowie County, TX, Camp County, TX, Delta County, TX, Franklin County, TX, Hopkins County, TX, Lamar County, TX, Morris County, TX, Red River County, TX, Titus County, TX, Wood County, TX

The radar

The Western Arkansas radar (KSRX), 60 km from the middle of the area, began a volume at 21:34 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.

Tornado Watch 533Nov 5, 3:55 PM CST

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.5 hours before the alert went out and 245 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: 884 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 248 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
Nov 5, 4:00 PM CST	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Clark, Conway and 32 more	5 hr
Nov 5, 5:55 PM CST	Mesoscale Discussion	SPC	Crawford, Franklin, Logan, Madison, Polk, Scott and 3 more	2 hr
Nov 5, 12:55 PM CST	Mesoscale Discussion	SPC	Andrew, Barton, Bates, Buchanan, Caldwell, Carroll and 24 more	95 min
Nov 5, 1:16 PM CST	Severe Thunderstorm Watch	SPC	Adair, Andrew, Barry, Barton, Bates, Benton and 59 more	7 hr
Nov 5, 3:17 PM CST	Mesoscale Discussion	SPC	Adair, Andrew, Barton, Bates, Benton, Buchanan and 50 more	118 min
Nov 5, 5:46 PM CST	Mesoscale Discussion	SPC	Barry, Callaway, Camden, Christian, Cole, Dallas and 17 more	59 min
Nov 4, 6:35 PM CST	Mesoscale Discussion	SPC	Beaver, Ellis, Harper, Texas	2 hr
Nov 5, 7:50 AM CST	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Cotton, Grady and 4 more	115 min
Nov 5, 10:48 AM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Coal, Garvin, Hughes and 13 more	87 min
Nov 5, 12:06 PM CST	Tornado Watch	SPC	Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 41 more	8 hr
Nov 5, 2:17 PM CST	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Coal, Hughes, Johnston and 5 more	88 min
Nov 5, 7:20 AM CST	Mesoscale Discussion	SPC	Bandera, Bastrop, Bell, Blanco, Burnet, Caldwell and 14 more	2 hr

Nearby

Mesoscale Discussions in Arkansas, 2015 Mesoscale Discussions in Texas, 2015 Mesoscale Discussions in Missouri, 2015 Every mesoscale discussion in 2015

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.