Alert archive / Nebraska / Mesoscale Discussions in 2008

Mesoscale Discussion 1003

May 24, 200833 counties in Nebraska; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 24, 2008, 2:17 PM CDT for 33 counties in Nebraska; 10 counties in South Dakota. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
May 24, 2008, 2:17 PM CDT (19:17 UTC)
Expired
May 24, 2008, 4:15 PM CDT
In force
118 min
Issued by
the Storm Prediction Center
All 43 counties

Adams County, NE, Antelope County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dixon County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Aurora County, SD, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Yankton County, SD

The radar

The Grand Island radar (KUEX), 169 km from the middle of the area, began a volume at 19:20 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.3 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, Omaha, NE at 12:00Z on 2008-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2008-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 323 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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
453 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 23, 7:07 PM CDTTornado WatchSPCArthur, Banner, Box Butte, Chase, Cheyenne, Dawes and 13 more5 hr
May 23, 8:17 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Chase, Clay, Dawson, Dundy and 24 more58 min
May 23, 8:48 PM CDTTornado Watch PDSSPCAdams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more6 hr
May 23, 10:33 PM CDTMesoscale DiscussionSPCAdams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more57 min
May 23, 11:14 PM CDTMesoscale DiscussionSPCArthur, Dawson, Frontier, Garden, Grant, Hayes and 6 more61 min
May 24, 1:18 PM CDTMesoscale DiscussionSPCKeya Paha57 min
May 24, 3:08 PM CDTTornado WatchSPCAdams, Antelope, Boone, Boyd, Brown, Buffalo and 45 more6 hr
May 24, 6:33 PM CDTMesoscale DiscussionSPCAdams, Boone, Burt, Butler, Cass, Cedar and 34 more117 min
May 24, 2:39 PM CDTTornado WatchSPCAurora, Beadle, Bon Homme, Brown, Brule, Buffalo and 31 more7 hr
May 24, 6:07 PM CDTMesoscale DiscussionSPCAurora, Beadle, Brookings, Brown, Brule, Buffalo and 39 more113 min

Nearby

Mesoscale Discussions in Nebraska, 2008Mesoscale Discussions in South Dakota, 2008Every mesoscale discussion in 2008

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.