Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1328

June 18, 200414 counties in Arkansas; McDonald County, Missouri; 29 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2004, 10:49 AM CDT for 14 counties in Arkansas; McDonald County, Missouri; 29 counties in Oklahoma. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Jun 18, 2004, 10:49 AM CDT (15:49 UTC)
Expired
Jun 18, 2004, 12:45 PM CDT
In force
116 min
Issued by
the Storm Prediction Center
All 44 counties

Benton County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Montgomery County, AR, Perry County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Yell County, AR, McDonald County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Delaware County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 101 km from the middle of the area, began a volume at 15:52 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

Norman, OK (KOUN), launched 12:00Z, 3.8 hours before the alert went out and 178 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, Norman, OK at 12:00Z on 2004-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1190 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, Norman, OK at 12:00Z on 2004-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
1190 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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
Jun 18, 3:51 PM CDTMesoscale DiscussionSPCLittle River114 min
Jun 18, 1:20 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 26 more115 min
Jun 18, 1:40 PM CDTSevere Thunderstorm WatchSPCAudrain, Bollinger, Butler, Callaway, Cape Girardeau, Carter and 35 more7 hr
Jun 18, 3:49 PM CDTMesoscale DiscussionSPCMississippi116 min
Jun 18, 6:17 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 10 more88 min
Jun 17, 7:38 PM CDTMesoscale DiscussionSPCBeaver, Cimarron, Texas2 hr
Jun 17, 9:19 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 15 more26 min
Jun 17, 9:40 PM CDTSevere Thunderstorm WatchSPCBeaver, Beckham, Blaine, Custer, Dewey, Ellis and 9 more5 hr
Jun 17, 11:44 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Canadian, Custer, Dewey, Garfield and 10 more91 min
Jun 17, 11:50 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Garfield, Grant, Kay, Kingfisher and 5 more4 hr
Jun 18, 1:29 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Craig, Creek, Garfield, Grant and 16 more91 min
Jun 18, 3:30 PM CDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas7 hr

Nearby

Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Arkansas, 2004Mesoscale Discussions in Missouri, 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.