Alert archive / Arkansas / Mesoscale Discussions in 2010

Mesoscale Discussion 366

April 24, 20104 states

The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2010, 2:44 AM CDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Apr 24, 2010, 2:44 AM CDT (07:44 UTC)
Expired
Apr 24, 2010, 4:15 AM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 65 counties

Arkansas County, AR, Cleburne County, AR, Cleveland County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Faulkner County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sharp County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, Benton County, MS, Bolivar County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 73 km from the middle of the area, began a volume at 07:46 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.

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 7.7 hours before the alert went out and 76 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 00:00Z on 2010-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 325 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2010-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.19395878Sfc1 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
325 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
463 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.7

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
Apr 23, 11:40 PM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clay, Cleveland, Craighead and 25 more65 min
Apr 24, 1:20 AM CDTMesoscale DiscussionSPCColumbia, Lafayette25 min
Apr 24, 1:50 AM CDTTornado WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more8 hr
Apr 24, 3:02 AM CDTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Cleveland, Dallas and 14 more8 hr
Apr 24, 5:01 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Columbia, Drew and 2 more89 min
Apr 24, 6:00 AM CDTTornado Watch PDSSPCAshley, Chicot, Clay, Craighead, Crittenden, Cross and 8 more6 hr
Apr 24, 7:25 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Cleveland, Drew, Jefferson and 3 more95 min
Apr 24, 9:31 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Chicot, Cleveland, Crittenden, Cross and 12 more59 min
Apr 24, 11:08 AM CDTMesoscale DiscussionSPCArkansas, Baxter, Clay, Cleburne, Conway, Craighead and 24 more67 min
Apr 24, 11:31 AM CDTTornado Watch PDSSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more8 hr
Apr 24, 1:52 PM CDTMesoscale DiscussionSPCBaxter, Boone, Marion53 min
Apr 24, 2:01 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Greene, Mississippi, Poinsett89 min
Apr 23, 7:39 PM CDTMesoscale DiscussionSPCAttala, Bolivar, Carroll, Choctaw, Clarke, Clay and 35 more36 min
Apr 23, 10:32 PM CDTMesoscale DiscussionSPCAttala, Choctaw, Clarke, Clay, Greene, Jasper and 16 more58 min
Apr 24, 2:07 AM CDTMesoscale DiscussionSPCGeorge, Greene53 min
Apr 24, 6:15 AM CDTTornado WatchSPCAmite, George, Greene, Hancock, Harrison, Jackson and 7 more7 hr
Apr 24, 10:28 AM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Clarke, Copiah, Covington and 34 more92 min
Apr 24, 12:47 PM CDTTornado WatchSPCGeorge, Greene, Hancock, Harrison, Jackson, Pearl River and 5 more7 hr
Apr 24, 5:48 PM CDTMesoscale DiscussionSPCClarke, Clay, Itawamba, Jasper, Kemper, Lauderdale and 11 more57 min
Apr 23, 7:06 PM CDTTornado WatchSPCAdair, Audrain, Boone, Callaway, Chariton, Howard and 17 more5 hr
Apr 23, 10:03 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Bates, Buchanan, Caldwell, Cass and 12 more27 min
Apr 23, 10:58 PM CDTTornado WatchSPCAndrew, Atchison, Buchanan, Caldwell, Carroll, Clay and 15 more5 hr
Apr 24, 3:15 AM CDTMesoscale DiscussionSPCCaldwell, Carroll, Daviess, Grundy, Livingston, Mercer and 1 more30 min
Apr 24, 7:35 AM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Mississippi, Perry, Scott, Stoddard55 min
Apr 24, 1:29 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Gentry, Harrison, Holt, Mercer and 2 more91 min
Apr 24, 2:52 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Gasconade, Iron, Jefferson, Saint Charles and 6 more53 min
Apr 24, 3:20 PM CDTTornado WatchSPCFranklin, Gasconade, Jefferson, Lewis, Lincoln, Marion and 7 more7 hr
Apr 24, 5:14 PM CDTMesoscale DiscussionSPCFranklin, Gasconade, Jefferson, Lincoln, Montgomery, Pike and 5 more61 min
Apr 24, 8:01 AM CDTTornado Watch PDSSPCBedford, Benton, Cheatham, Coffee, Davidson, Dickson and 17 more5 hr
Apr 24, 11:40 AM CDTMesoscale DiscussionSPCBedford, Bledsoe, Bradley, Cannon, Cheatham, Clay and 32 more95 min
Apr 24, 1:17 PM CDTTornado Watch PDSSPCBedford, Benton, Cannon, Cheatham, Clay, Coffee and 36 more8 hr
Apr 24, 6:15 PM CDTTornado WatchSPCAnderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 53 more8 hr

Nearby

Mesoscale Discussions in Arkansas, 2010Mesoscale Discussions in Tennessee, 2010Mesoscale Discussions in Mississippi, 2010Every mesoscale discussion in 2010

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.