Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 2436

November 23, 200428 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Nov 23, 2004, 12:16 PM CST for 28 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 23, 2004, 12:16 PM CST (18:16 UTC)
Expired
Nov 23, 2004, 2:45 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 28 counties

Bosque County, TX, Brown County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Coryell County, TX, Crane County, TX, Crockett County, TX, Glasscock County, TX, Hamilton County, TX, Irion County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Sterling County, TX, Sutton County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX

The radar

The San Angelo radar (KSJT), 36 km from the middle of the area, began a volume at 18:19 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

Del Rio, TX (KDRT), launched 12:00Z, 6.3 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, Del Rio, TX at 12:00Z on 2004-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 682 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, Del Rio, TX at 12:00Z on 2004-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 square meters per square second.1939587897Sfc1 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
682 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.6

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
Nov 22, 6:03 PM CSTMesoscale DiscussionSPCAustin, Brazoria, Chambers, Colorado, Fort Bend, Hardin and 16 more2 hr
Nov 22, 10:30 PM CSTMesoscale DiscussionSPCBorden, Coke, Crockett, Dawson, Fisher, Garza and 21 more2 hr
Nov 22, 11:00 PM CSTTornado WatchSPCAndrews, Borden, Coke, Crane, Crockett, Dawson and 22 more6 hr
Nov 23, 2:58 AM CSTMesoscale DiscussionSPCBorden, Coke, Crockett, Fisher, Glasscock, Howard and 11 more92 min
Nov 23, 4:10 AM CSTSevere Thunderstorm WatchSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 19 more5 hr
Nov 23, 7:06 AM CSTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bastrop, Bell, Blanco and 46 more84 min
Nov 23, 7:19 AM CSTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Denton and 13 more86 min
Nov 23, 7:40 AM CSTMesoscale DiscussionSPCDallam6 hr
Nov 23, 8:45 AM CSTTornado WatchSPCAnderson, Austin, Bastrop, Bell, Blanco, Brazos and 47 more6 hr
Nov 23, 9:15 AM CSTMesoscale DiscussionSPCCollin, Dallas, Delta, Denton, Fannin, Grayson and 5 more3 hr
Nov 23, 9:45 AM CSTTornado WatchSPCAngelina, Austin, Brazoria, Calhoun, Chambers, Colorado and 25 more5 hr
Nov 23, 10:37 AM CSTMesoscale DiscussionSPCAnderson, Austin, Bastrop, Bell, Blanco, Brazos and 47 more113 min
Nov 23, 11:38 AM CSTMesoscale DiscussionSPCAngelina, Austin, Brazoria, Calhoun, Chambers, Colorado and 25 more2 hr
Nov 23, 12:15 PM CSTMesoscale DiscussionSPCCarson, Dallam, Hansford, Hartley, Hutchinson, Moore and 3 more5 hr
Nov 23, 12:48 PM CSTMesoscale DiscussionSPCAnderson, Bastrop, Bell, Blanco, Brazoria, Brazos and 58 more117 min
Nov 23, 2:00 PM CSTTornado WatchSPCAnderson, Angelina, Austin, Bowie, Brazoria, Brazos and 42 more7 hr
Nov 23, 2:14 PM CSTMesoscale DiscussionSPCBriscoe, Childress, Cottle, Crosby, Dickens, Fisher and 20 more3 hr
Nov 23, 3:15 PM CSTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bexar, Blanco, Bosque, Brown and 40 more5 hr
Nov 23, 3:21 PM CSTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bowie, Brazoria, Brazos and 42 more114 min
Nov 23, 5:30 PM CSTSevere Thunderstorm WatchSPCAtascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 64 more6 hr

Nearby

Mesoscale Discussions in Texas, 2004Every mesoscale discussion in 2004

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.