Alert archive / South Dakota / Mesoscale Discussions in 2016
Mesoscale Discussion 1636
The Storm Prediction Center issued this mesoscale discussion at Sep 4, 2016, 6:56 PM CDT for Wilkin County, Minnesota; 6 counties in North Dakota; 31 counties in South Dakota. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Sep 4, 2016, 6:56 PM CDT (23:56 UTC)
- Expired
- Sep 4, 2016, 8:30 PM CDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
All 38 counties
Wilkin County, MN, Dickey County, ND, LaMoure County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Aurora County, SD, Beadle County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Mellette County, SD, Miner County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 107 km from the middle of the area, began a volume at 23:59 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
Aberdeen, SD (KABR), launched 12:00Z, 11.9 hours before the alert went out and 65 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.
- Mixed-layer CAPE
- 37 J/kg
- Mixed-layer CIN
- -585 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 5:32 AM CDT | Mesoscale Discussion | SPC | Benson, Burleigh, Cavalier, Ramsey, Sheridan, Wells | 118 min |
| Sep 4, 10:05 AM CDT | Mesoscale Discussion | SPC | Barnes, Grand Forks, Griggs, LaMoure, Nelson, Pembina and 2 more | 115 min |
| Sep 4, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | Dickey, LaMoure, Logan, McIntosh, Ransom, Richland and 1 more | 7 hr |
| Sep 4, 2:46 PM CDT | Mesoscale Discussion | SPC | Bennett, Haakon, Jackson, Jones, Lyman, Mellette and 4 more | 119 min |
| Sep 4, 3:24 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Custer, Fall River, Haakon, Jackson, Mellette and 4 more | 7 hr |
| Sep 4, 4:01 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Edmunds and 13 more | 89 min |
| Sep 4, 6:07 PM CDT | Mesoscale Discussion | SPC | Bennett, Custer, Fall River, Jackson, Oglala Lakota | 113 min |
Nearby
Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in North Dakota, 2016Mesoscale Discussions in Minnesota, 2016Every mesoscale discussion in 2016
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.