Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 748

May 6, 20054 states

The Storm Prediction Center issued this mesoscale discussion at May 6, 2005, 4:42 PM MDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2005, 4:42 PM MDT (22:42 UTC)
Expired
May 6, 2005, 6:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 82 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Phillips County, CO, Prowers County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Finney County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Morton County, KS, Norton County, KS, Phillips County, KS, Rawlins County, KS, Rooks County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Arthur County, NE, Blaine County, NE, Box Butte County, NE, Brown County, NE, Buffalo County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Dawes County, NE, Dawson County, NE, Deuel County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garden County, NE, Garfield County, NE, Gosper County, NE, Grant County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sheridan County, NE, Sherman County, NE, Sioux County, NE, Thomas County, NE, Valley County, NE, Bennett County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Jackson County, SD, Lawrence County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Todd County, SD

The radar

The North Platte radar (KLNX), 130 km from the middle of the area, began a volume at 22:42 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.7 hours before the alert went out and 108 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, N. Platte/Lee Bi, NE at 12:00Z on 2005-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 350 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, N. Platte/Lee Bi, NE at 12:00Z on 2005-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
350 J/kg
Mixed-layer CIN
-281 J/kg
Mixed-layer LCL
966 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
90 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 6, 12:56 PM MDTMesoscale DiscussionSPCBaca, Bent, Kiowa, Las Animas, Otero, Prowers2 hr
May 6, 1:30 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Crowley, Kiowa, Las Animas, Otero and 2 more8 hr
May 6, 2:35 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Logan, Phillips, Sedgwick, Washington and 1 more6 hr
May 6, 2:41 PM MDTMesoscale DiscussionSPCBox Butte, Cherry, Dawes, Garden, Grant, Hooker and 4 more2 hr
May 6, 5:24 PM MDTMesoscale DiscussionSPCBrookings, Hamlin, Hanson, Kingsbury, Lake, Lincoln and 6 more2 hr

Nearby

Mesoscale Discussions in Nebraska, 2005Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in South Dakota, 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.