Alert archive / Iowa / Mesoscale Discussions in 2005

Mesoscale Discussion 2152

September 6, 200527 counties in Iowa; 5 counties in Minnesota; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Sep 6, 2005, 2:52 AM CDT for 27 counties in Iowa; 5 counties in Minnesota; 5 counties in Nebraska. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Sep 6, 2005, 2:52 AM CDT (07:52 UTC)
Expired
Sep 6, 2005, 4:15 AM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 37 counties

Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Hamilton County, IA, Hancock County, IA, Howard County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Mitchell County, IA, Monona County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Shelby County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Fillmore County, MN, Freeborn County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Burt County, NE, Dakota County, NE, Dixon County, NE, Thurston County, NE, Wayne County, NE

The radar

The Des Moines radar (KDMX), 156 km from the middle of the area, began a volume at 07:52 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

Omaha, NE (KOAX), launched 00:00Z, 7.9 hours before the alert went out and 253 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 2005-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 2005-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 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
3 J/kg
Mixed-layer CIN
-202 J/kg
Mixed-layer LCL
2260 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
Sep 5, 11:18 PM CDTMesoscale DiscussionSPCDickinson, Emmet, Lyon, O'Brien, Osceola, Sioux87 min
Sep 5, 11:40 PM CDTSevere Thunderstorm WatchSPCClay, Dickinson, Lyon, O'Brien, Osceola, Sioux4 hr
Sep 5, 7:13 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Clay, Clearwater, Grant and 16 more2 hr
Sep 5, 8:30 PM CDTSevere Thunderstorm WatchSPCAitkin, Carlton, Cass, Crow Wing, Douglas, Hubbard and 9 more6 hr
Sep 5, 10:10 PM CDTMesoscale DiscussionSPCAnoka, Benton, Brown, Carver, Chisago, Hennepin and 13 more65 min
Sep 5, 10:20 PM CDTSevere Thunderstorm WatchSPCAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 33 more5 hr
Sep 5, 7:30 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Dawson, Franklin, Frontier, Furnas and 12 more90 min
Sep 5, 11:00 PM CDTMesoscale DiscussionSPCAdams, Clay, Franklin, Furnas, Harlan, Kearney and 4 more60 min
Sep 6, 3:18 PM CDTMesoscale DiscussionSPCArthur, Chase, Deuel, Dundy, Hayes, Hitchcock and 7 more87 min
Sep 6, 5:47 PM CDTMesoscale DiscussionSPCAntelope, Arthur, Blaine, Boone, Brown, Garfield and 12 more118 min

Nearby

Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Minnesota, 2005Mesoscale Discussions in Nebraska, 2005Every mesoscale discussion in 2005

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.