Alert archive / Tennessee / Mesoscale Discussions in 2005

Mesoscale Discussion 729

April 30, 2005Alcorn County, Benton County, Marshall County, Mississippi; Graham County, North Carolina; 59 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2005, 2:25 PM CDT for Alcorn County, Benton County, Marshall County, Mississippi; Graham County, North Carolina; 59 counties in Tennessee. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Apr 30, 2005, 2:25 PM CDT (19:25 UTC)
Expired
Apr 30, 2005, 4:00 PM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 63 counties

Alcorn County, MS, Benton County, MS, Marshall County, MS, Graham County, NC, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Blount County, TN, Campbell County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Fayette County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Humphreys County, TN, Jackson County, TN, Knox County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Loudon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, McNairy County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Perry County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Shelby County, TN, Smith County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 149 km from the middle of the area, began a volume at 19:28 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, 7.4 hours before the alert went out and 201 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 2005-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2005-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -77 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
-77 m²/s²
0-3 km storm-relative helicity
4 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.

IssuedProductOfficeCountiesLasted
Apr 29, 8:53 PM CDTMesoscale DiscussionSPCAttala, Calhoun, Carroll, Chickasaw, Choctaw, Clay and 35 more97 min
Apr 29, 9:23 PM CDTMesoscale DiscussionSPCAlcorn, Benton, Marshall97 min
Apr 29, 9:45 PM CDTTornado WatchSPCAdams, Alcorn, Attala, Benton, Calhoun, Carroll and 46 more7 hr
Apr 30, 1:08 AM CDTMesoscale DiscussionSPCAdams, Amite, Clarke, Copiah, Covington, Forrest and 20 more2 hr
Apr 30, 1:39 AM CDTMesoscale DiscussionSPCAdams, Alcorn, Attala, Calhoun, Carroll, Chickasaw and 45 more96 min
Apr 30, 2:40 AM CDTTornado WatchSPCAmite, Clarke, Copiah, Covington, Forrest, Franklin and 25 more7 hr
Apr 30, 4:42 AM CDTMesoscale DiscussionSPCAmite, Clarke, Copiah, Covington, Forrest, Franklin and 31 more93 min
Apr 30, 5:05 AM CDTTornado WatchSPCGeorge, Greene, Hancock, Harrison, Jackson, Stone7 hr
Apr 30, 6:41 AM CDTMesoscale DiscussionSPCGeorge, Greene, Hancock, Harrison, Jackson, Stone94 min
Apr 30, 11:02 AM CDTMesoscale DiscussionSPCGeorge, Hancock, Harrison, Jackson, Pearl River, Stone58 min
Apr 30, 1:08 AM CDTMesoscale DiscussionSPCGraham67 min
Apr 30, 8:19 AM CDTMesoscale DiscussionSPCAlamance, Anson, Bladen, Cabarrus, Caswell, Catawba and 43 more26 min
Apr 30, 8:40 AM CDTSevere Thunderstorm WatchSPCAlamance, Anson, Bladen, Cabarrus, Caswell, Chatham and 29 more6 hr
Apr 30, 10:25 AM CDTMesoscale DiscussionSPCAlamance, Anson, Bertie, Bladen, Chatham, Columbus and 29 more2 hr
Apr 30, 12:17 PM CDTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Chowan, Currituck, Edgecombe and 15 more118 min
Apr 30, 2:21 PM CDTMesoscale DiscussionSPCBeaufort, Bertie, Bladen, Chowan, Columbus, Craven and 14 more54 min

Nearby

Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Mississippi, 2005Mesoscale Discussions in North Carolina, 2005Every mesoscale discussion in 2005

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.