Alert archive / Minnesota / Mesoscale Discussions in 2024

Mesoscale Discussion 2001

August 26, 20244 states

The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2024, 4:39 PM CDT for 4 states. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Aug 26, 2024, 4:39 PM CDT (21:39 UTC)
Expired
Aug 26, 2024, 6:15 PM CDT
In force
96 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch possible
Chance of a watch
60%
All 50 counties

Clay County, IA, Dickinson County, IA, Emmet County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Le Sueur County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Cedar County, NE, Dixon County, NE, Holt County, NE, Knox County, NE, Bon Homme County, SD, Clay County, SD, Lincoln County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 84 km from the middle of the area, began a volume at 21:42 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 watches that followed

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 213 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, Minneapolis, MN at 12:00Z on 2024-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3708 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, Minneapolis, MN at 12:00Z on 2024-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
3708 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
-3.5

Open this sounding in Storm Lab

The text

As transmitted.

<!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
Aug 26, 5:49 PM CDTSevere Thunderstorm WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more2 hr
Aug 25, 11:53 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 21 more2 hr
Aug 26, 12:35 PM CDTMesoscale DiscussionSPCAitkin, Cass, Crow Wing, Douglas, Grant, Morrison and 6 more85 min
Aug 26, 2:38 PM CDTSevere Thunderstorm WatchSPCAitkin, Benton, Big Stone, Cass, Chippewa, Crow Wing and 20 more5 hr
Aug 26, 2:43 PM CDTMesoscale DiscussionSPCBenton, Big Stone, Brown, Carver, Cass, Chippewa and 30 more2 hr
Aug 26, 5:18 PM CDTSevere Thunderstorm WatchSPCAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 15 more6 hr
Aug 26, 6:44 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Carver, Dakota, Goodhue, Hennepin and 8 more91 min
Aug 25, 7:50 PM CDTMesoscale DiscussionSPCBoyd85 min
Aug 26, 12:15 PM CDTMesoscale DiscussionSPCBox Butte, Dawes, Morrill, Scotts Bluff, Sheridan, Sioux2 hr
Aug 26, 2:37 PM CDTMesoscale DiscussionSPCBox Butte, Boyd, Brown, Cherry, Dawes, Holt and 5 more83 min
Aug 26, 3:11 PM CDTSevere Thunderstorm WatchSPCBox Butte, Boyd, Brown, Cherry, Dawes, Holt and 4 more8 hr
Aug 26, 4:51 PM CDTMesoscale DiscussionSPCBox Butte, Dawes, Sheridan, Sioux84 min
Aug 26, 5:28 PM CDTMesoscale DiscussionSPCCuster, Dawson, Frontier, Furnas, Gosper, Hayes and 5 more92 min
Aug 25, 10:50 PM CDTMesoscale DiscussionSPCBeadle, Brown, Clark, Day, Marshall, Spink85 min

Nearby

Mesoscale Discussions in Minnesota, 2024Mesoscale Discussions in Iowa, 2024Mesoscale Discussions in South Dakota, 2024Every mesoscale discussion in 2024

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.