Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 301

April 8, 2004Eddy County, Lea County, Roosevelt County, New Mexico; 9 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 8, 2004, 6:19 PM MDT for Eddy County, Lea County, Roosevelt County, New Mexico; 9 counties in Texas. It was in force for 26 min.

The area

The outline as issued.

The facts

Issued
Apr 8, 2004, 6:19 PM MDT (00:19 UTC)
Expired
Apr 8, 2004, 6:45 PM MDT
In force
26 min
Issued by
the Storm Prediction Center

Counties Eddy County, NM, Lea County, NM, Roosevelt County, NM, Bailey County, TX, Castro County, TX, Cochran County, TX, Gaines County, TX, Hockley County, TX, Lamb County, TX, Parmer County, TX, Terry County, TX, Yoakum County, TX

The watches that followed

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

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 0.3 hours before the alert went out and 194 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, Midland Regional, TX at 00:00Z on 2004-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 846 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, Midland Regional, TX at 00:00Z on 2004-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
846 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1631 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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 8, 6:40 PM MDTSevere Thunderstorm WatchSPCLea4 hr
Apr 8, 7:42 PM MDTMesoscale DiscussionSPCLea63 min
Apr 8, 9:18 PM MDTMesoscale DiscussionSPCLea57 min
Apr 9, 3:20 PM MDTMesoscale DiscussionSPCHarding, Quay, Union115 min
Apr 9, 2:32 PM MDTMesoscale DiscussionSPCCollin, Cooke, Denton, Fannin, Grayson, Lamar88 min
Apr 9, 4:49 PM MDTMesoscale DiscussionSPCBrown, Burnet, Callahan, Coleman, Comanche, Concho and 17 more86 min

Nearby

Mesoscale Discussions in Texas, 2004Mesoscale Discussions in New Mexico, 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.