Alert archive / Arkansas / Mesoscale Discussions in 2013

Mesoscale Discussion 925

June 1, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2013, 9:53 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 1, 2013, 9:53 AM CDT (14:53 UTC)
Expired
Jun 1, 2013, 12:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 48 counties

Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Nevada County, AR, Ouachita County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, St. Francis County, AR, Union County, AR, Woodruff County, AR, Dunklin County, MO, Benton County, MS, Bolivar County, MS, Coahoma County, MS, DeSoto County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 104 km from the middle of the area, began a volume at 14:55 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 nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 2.9 hours before the alert went out and 79 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2013-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1721 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2013-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1721 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
1.2
Supercell composite
9.1

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.

IssuedProductOfficeCountiesLasted
May 31, 11:08 PM CDTMesoscale DiscussionSPCCrawford, Sebastian67 min
May 31, 11:23 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more5 hr
Jun 1, 1:51 AM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Madison, Marion, Washington114 min
Jun 1, 2:19 AM CDTMesoscale DiscussionSPCBoone, Crawford, Franklin, Johnson, Logan, Madison and 5 more116 min
Jun 1, 3:46 AM CDTMesoscale DiscussionSPCBaxter, Clay, Cleburne, Conway, Craighead, Crawford and 24 more29 min
May 31, 7:05 PM CDTMesoscale DiscussionSPCBarton, Benton, Camden, Cedar, Cole, Dade and 19 more85 min
May 31, 8:46 PM CDTMesoscale DiscussionSPCBarry, Camden, Christian, Crawford, Dade, Dallas and 32 more59 min
May 31, 9:37 PM CDTTornado WatchSPCBarry, Barton, Bollinger, Butler, Cape Girardeau, Carter and 37 more6 hr
Jun 1, 1:24 PM CDTMesoscale DiscussionSPCBedford, Bledsoe, Cannon, Cheatham, Clay, Coffee and 35 more96 min
Jun 1, 5:05 PM CDTMesoscale DiscussionSPCAnderson, Bledsoe, Campbell, Cannon, Coffee, Cumberland and 20 more85 min

Nearby

Mesoscale Discussions in Arkansas, 2013Mesoscale Discussions in Tennessee, 2013Mesoscale Discussions in Mississippi, 2013Every mesoscale discussion in 2013

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.