Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 990

May 14, 200311 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 14, 2003, 11:20 PM CDT for 11 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: May 14, 2003, 11:20 PM CDT (04:20 UTC)
Expired: May 15, 2003, 1:15 AM CDT
In force: 115 min
Issued by: the Storm Prediction Center

Counties Bell County, TX, Bosque County, TX, Coryell County, TX, Ellis County, TX, Falls County, TX, Freestone County, TX, Hill County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 377May 14, 11:45 PM CDT

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.3 hours before the alert went out and 154 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: 3397 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1078 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 16.7

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.

Issued	Product	Office	Counties	Lasted
May 14, 7:36 PM CDT	Mesoscale Discussion	SPC	Bowie, Red River	114 min
May 14, 9:20 PM CDT	Mesoscale Discussion	SPC	Cass, Harrison, Marion	115 min
May 14, 11:35 PM CDT	Severe Thunderstorm Watch	SPC	Camp, Cass, Cherokee, Franklin, Gregg, Harrison and 8 more	5 hr
May 14, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bosque, Collin, Dallas, Delta, Denton and 16 more	5 hr
May 15, 2:10 AM CDT	Mesoscale Discussion	SPC	Anderson, Collin, Dallas, Denton, Ellis, Henderson and 13 more	2 hr
May 15, 2:27 AM CDT	Mesoscale Discussion	SPC	Gregg, Harrison, Marion, Panola, Rusk, Shelby	2 hr
May 15, 1:31 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Castro, Dallam, Deaf Smith and 10 more	119 min
May 15, 1:55 PM CDT	Tornado Watch	SPC	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 13 more	6 hr
May 15, 3:41 PM CDT	Mesoscale Discussion	SPC	Armstrong, Baylor, Briscoe, Carson, Castro, Childress and 30 more	94 min
May 15, 4:05 PM CDT	Tornado Watch	SPC	Borden, Briscoe, Castro, Childress, Cottle, Crosby and 20 more	6 hr
May 15, 5:15 PM CDT	Mesoscale Discussion	SPC	Frio, Kinney, Maverick, Uvalde, Zavala	2 hr
May 15, 5:49 PM CDT	Mesoscale Discussion	SPC	Baylor, Coke, Cottle, Fisher, Foard, Hardeman and 17 more	116 min
May 15, 6:25 PM CDT	Tornado Watch	SPC	Archer, Baylor, Borden, Briscoe, Brown, Callahan and 45 more	6 hr
May 15, 6:47 PM CDT	Mesoscale Discussion	SPC	Childress, Collingsworth, Donley, Gray, Hall, Hansford and 6 more	58 min
May 15, 6:50 PM CDT	Tornado Watch	SPC	Armstrong, Carson, Collingsworth, Dallam, Donley, Gray and 12 more	5 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.