Alert archive / Tennessee / Mesoscale Discussions in 2026

Mesoscale Discussion 934

June 1, 20269 counties in Alabama; 13 counties in Mississippi; 16 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2026, 9:30 AM CDT for 9 counties in Alabama; 13 counties in Mississippi; 16 counties in Tennessee. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 1, 2026, 9:30 AM CDT (14:30 UTC)
Expired
Jun 1, 2026, 11:30 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...severe thunderstorm watch likely
Chance of a watch
80%
All 38 counties

Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Morgan County, AL, Winston County, AL, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Pontotoc County, MS, Prentiss County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Chester County, TN, Decatur County, TN, Fayette County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, McNairy County, TN, Perry County, TN, Shelby County, TN, Wayne County, TN

The radar

The Columbus AFB radar (KGWX), 105 km from the middle of the area, began a volume at 14:32 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

Birmingham, AL (KBMX), launched 12:00Z, 2.5 hours before the alert went out and 245 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, Birmingham, AL at 12:00Z on 2026-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1010 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, Birmingham, AL at 12:00Z on 2026-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
1010 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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
Jun 1, 11:26 AM CDTSevere Thunderstorm WatchSPCAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 44 more12 hr
Jun 1, 2:18 PM CDTMesoscale DiscussionSPCBibb, Blount, Calhoun, Cherokee, Chilton, Clay and 18 more117 min
Jun 1, 4:46 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Chambers, Choctaw and 23 more119 min
Jun 1, 5:07 PM CDTSevere Thunderstorm WatchSPCButler, Coffee, Conecuh, Covington, Crenshaw, Dale and 5 more3 hr
Jun 1, 5:16 PM CDTMesoscale DiscussionSPCCalhoun, Coahoma, DeSoto, Grenada, Lafayette, Marshall and 6 more119 min
Jun 1, 6:01 AM CDTMesoscale DiscussionSPCWeakley2 hr

Nearby

Mesoscale Discussions in Tennessee, 2026Mesoscale Discussions in Mississippi, 2026Mesoscale Discussions in Alabama, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.