Alert archive / South Dakota / Mesoscale Discussions in 2026
Mesoscale Discussion 979
The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2026, 1:32 PM MDT for 5 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2026, 1:32 PM MDT (19:32 UTC)
- Expired
- Jun 4, 2026, 3:00 PM MDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...severe thunderstorm watch likely
- Chance of a watch
- 80%
All 29 counties
Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Golden Valley County, ND, Hettinger County, ND, Slope County, ND, Stark County, ND, Box Butte County, NE, Dawes County, NE, Sheridan County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Campbell County, WY, Crook County, WY, Niobrara County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 70 km from the middle of the area, began a volume at 19:36 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 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 |
|---|---|---|---|---|
| Jun 4, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Custer, Dawson, Fallon, Powder River, Prairie and 1 more | 7 hr |
| Jun 4, 4:46 PM MDT | Mesoscale Discussion | SPC | Carter, Custer, Dawson, Fallon, Powder River, Prairie and 1 more | 89 min |
| Jun 4, 12:29 PM MDT | Mesoscale Discussion | SPC | Gage, Johnson, Nemaha, Otoe, Pawnee, Richardson | 3 hr |
| Jun 4, 4:11 PM MDT | Mesoscale Discussion | SPC | Pawnee, Richardson | 94 min |
| Jun 3, 7:09 PM MDT | Mesoscale Discussion | SPC | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 4 more | 96 min |
| Jun 3, 7:37 PM MDT | Mesoscale Discussion | SPC | Brookings, Codington, Deuel, Grant, Hamlin, Kingsbury and 1 more | 83 min |
| Jun 4, 12:26 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brule, Buffalo, Clark, Codington and 11 more | 94 min |
| Jun 4, 2:12 PM MDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Brule, Buffalo, Charles Mix and 21 more | 93 min |
| Jun 4, 4:25 PM MDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Brookings, Brule, Buffalo, Charles Mix and 27 more | 8 hr |
Nearby
Mesoscale Discussions in South Dakota, 2026Mesoscale Discussions in North Dakota, 2026Mesoscale Discussions in Montana, 2026Every mesoscale discussion in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.