Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 720

May 3, 200318 counties in Oklahoma; 38 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 3, 2003, 10:00 PM CDT for 18 counties in Oklahoma; 38 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 3, 2003, 10:00 PM CDT (03:00 UTC)
Expired
May 4, 2003, 12:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 56 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Donley County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Jack County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Palo Pinto County, TX, Roberts County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 63 km from the middle of the area, began a volume at 02:59 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

Fort Worth, TX (KFWD), launched 00:00Z, 3.0 hours before the alert went out and 208 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, Fort Worth, TX at 00:00Z on 2003-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2133 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, Fort Worth, TX at 00:00Z on 2003-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.19395878Sfc1 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
2133 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
661 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
1.4
Supercell composite
7.2

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 3, 8:05 PM CDTTornado WatchSPCBeckham, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more6 hr
May 4, 11:44 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Cherokee, Coal, Craig, Creek and 27 more3 hr
May 4, 12:35 PM CDTTornado WatchSPCAdair, Cherokee, Craig, Creek, Delaware, Haskell and 22 more6 hr
May 4, 2:16 PM CDTMesoscale DiscussionSPCBryan, Johnston, Love, Marshall, Murray119 min
May 4, 3:00 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 6 more6 hr
May 4, 3:05 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Delaware, Haskell, McIntosh and 9 more115 min
May 4, 4:43 PM CDTMesoscale DiscussionSPCCraig, Nowata, Ottawa2 hr
May 4, 5:20 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, LeFlore, Ottawa and 1 more55 min
May 4, 6:05 PM CDTTornado WatchSPCAdair, Cherokee, Craig, Delaware, Haskell, Latimer and 5 more7 hr
May 4, 6:28 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Johnston and 5 more2 hr

Nearby

Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Oklahoma, 2003Every 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; radar from the NEXRAD Level II archive.