Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 1184

June 11, 200426 counties in Iowa; 24 counties in Nebraska; Clay County, Lincoln County, Union County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2004, 1:28 AM CDT for 26 counties in Iowa; 24 counties in Nebraska; Clay County, Lincoln County, Union County, South Dakota. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2004, 1:28 AM CDT (06:28 UTC)
Expired
Jun 11, 2004, 2:30 AM CDT
In force
62 min
Issued by
the Storm Prediction Center
All 53 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Crawford County, IA, Dallas County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Ida County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, O'Brien County, IA, Plymouth County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Union County, IA, Woodbury County, IA, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Hall County, NE, Hamilton County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Platte County, NE, Polk County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE, Clay County, SD, Lincoln County, SD, Union County, SD

The radar

The Omaha radar (KOAX), 80 km from the middle of the area, began a volume at 06:29 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

Omaha, NE (KOAX), launched 00:00Z, 6.5 hours before the alert went out and 80 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, Omaha, NE at 00:00Z on 2004-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1255 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, Omaha, NE at 00:00Z on 2004-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
1255 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1340 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
71 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
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCClinton, Dubuque, Jackson, Scott92 min
Jun 11, 10:10 AM CDTMesoscale DiscussionSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more95 min
Jun 11, 12:55 PM CDTMesoscale DiscussionSPCBremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 23 more3 hr
Jun 11, 1:45 PM CDTTornado WatchSPCBlack Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 20 more5 hr
Jun 11, 3:03 PM CDTMesoscale DiscussionSPCBlack Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 19 more87 min
Jun 11, 4:55 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 20 more95 min
Jun 11, 5:00 PM CDTTornado WatchSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more6 hr
Jun 11, 5:56 PM CDTMesoscale DiscussionSPCJackson94 min
Jun 10, 7:58 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Clay, Dawson, Fillmore, Franklin and 20 more92 min
Jun 10, 8:19 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 23 more86 min
Jun 10, 8:50 PM CDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 28 more5 hr
Jun 10, 10:00 PM CDTSevere Thunderstorm WatchSPCAdams, Buffalo, Clay, Fillmore, Franklin, Furnas and 12 more5 hr
Jun 10, 11:43 PM CDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Butler and 28 more92 min
Jun 11, 12:09 PM CDTMesoscale DiscussionSPCBrown, Campbell, Corson, Dewey, Edmunds, Faulk and 4 more2 hr

Nearby

Mesoscale Discussions in Iowa, 2004Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in South Dakota, 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.