Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 640

May 10, 20044 counties in New Mexico; Beaver County, Texas County, Oklahoma; 44 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 10, 2004, 6:43 PM MDT for 4 counties in New Mexico; Beaver County, Texas County, Oklahoma; 44 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2004, 6:43 PM MDT (00:43 UTC)
Expired
May 10, 2004, 8:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 50 counties

Curry County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Beaver County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Borden County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Cochran County, TX, Collingsworth County, TX, Crosby County, TX, Dallam County, TX, Dawson County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Scurry County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 90 km from the middle of the area, began a volume at 00:46 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.7 hours before the alert went out and 90 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, Amarillo Airport, TX at 00:00Z on 2004-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 987 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, Amarillo Airport, TX at 00:00Z on 2004-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 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
987 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
2745 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
29 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
May 11, 1:00 PM MDTMesoscale DiscussionSPCCimarron, Texas2 hr
May 11, 3:05 PM MDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas6 hr
May 11, 8:37 AM MDTMesoscale DiscussionSPCAransas, Austin, Bee, Brazoria, Chambers, Colorado and 17 more113 min
May 11, 9:05 AM MDTMesoscale DiscussionSPCBee, Duval, Goliad, Jim Wells, Live Oak, McMullen and 2 more115 min
May 11, 9:55 AM MDTSevere Thunderstorm WatchSPCAransas, Atascosa, Austin, Bastrop, Bee, Brazoria and 33 more5 hr
May 11, 1:33 PM MDTMesoscale DiscussionSPCCrane, Crockett, Glasscock, Irion, Midland, Pecos and 3 more117 min
May 11, 1:58 PM MDTMesoscale DiscussionSPCBrazoria, Fort Bend, Harris, Matagorda62 min
May 11, 2:00 PM MDTMesoscale DiscussionSPCBrazoria, Fort Bend, Harris, Matagorda60 min
May 11, 2:50 PM MDTSevere Thunderstorm WatchSPCChambers, Hardin, Harris, Jefferson, Liberty, Orange3 hr
May 11, 5:03 PM MDTMesoscale DiscussionSPCChambers, Hardin, Jefferson, Liberty, Orange57 min

Nearby

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