Alert archive / Kentucky / Mesoscale Discussions in 2024

Mesoscale Discussion 992

May 26, 20244 states

The Storm Prediction Center issued this mesoscale discussion at May 26, 2024, 6:18 PM CDT for 4 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 26, 2024, 6:18 PM CDT (23:18 UTC)
Expired
May 26, 2024, 7:45 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 320
All 59 counties

Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Crawford County, IN, Dubois County, IN, Gibson County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Ballard County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, Scott County, MO

The radar

The Evansville,IN radar (KVWX), 72 km from the middle of the area, began a volume at 23:20 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

Nashville Metro, TN (KBNA), launched 12:00Z, 11.3 hours before the alert went out and 233 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, Nashville Metro, TN at 12:00Z on 2024-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1896 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, Nashville Metro, TN at 12:00Z on 2024-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
1896 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
1.4
Supercell composite
9.5

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
May 26, 2:35 AM CDTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more7 hr
May 26, 7:50 AM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more115 min
May 26, 2:38 PM CDTMesoscale DiscussionSPCAlexander, Jackson, Johnson, Massac, Pulaski, Randolph and 2 more3 hr
May 26, 2:46 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more59 min
May 26, 3:26 PM CDTMesoscale DiscussionSPCBoone, DeKalb, DuPage, Kane, Kendall, Lake and 2 more94 min
May 26, 4:01 PM CDTTornado Watch PDSSPCAlexander, Bond, Clinton, Fayette, Franklin, Hamilton and 16 more7 hr
May 26, 5:38 PM CDTMesoscale DiscussionSPCBond, Christian, Clark, Clay, Coles, Crawford and 14 more67 min
May 26, 5:53 PM CDTMesoscale DiscussionSPCMcHenry67 min
May 26, 6:27 PM CDTSevere Thunderstorm WatchSPCClark, Coles, Cumberland, Edgar, Shelby5 hr
May 26, 6:54 PM CDTTornado WatchSPCClay, Crawford, Edwards, Effingham, Gallatin, Hardin and 6 more6 hr
May 26, 6:57 PM CDTMesoscale DiscussionSPCAlexander63 min
May 26, 8:59 AM CDTTornado WatchSPCCrawford, Dubois, Harrison, Perry, Posey, Spencer and 2 more8 hr
May 26, 11:20 AM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Dearborn, Decatur and 27 more85 min
May 26, 12:02 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Blackford, Dearborn, Decatur, Delaware and 12 more7 hr
May 26, 10:17 AM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Boyle, Casey and 26 more88 min
May 26, 11:52 AM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Boyle, Casey and 32 more83 min
May 26, 12:13 PM CDTMesoscale DiscussionSPCFloyd, Harlan, Knott, Letcher, Martin, Pike92 min
May 26, 12:46 PM CDTSevere Thunderstorm WatchSPCBreathitt, Floyd, Harlan, Johnson, Knott, Leslie and 5 more9 hr
May 26, 1:57 PM CDTMesoscale DiscussionSPCClinton, Cumberland, McCreary, Monroe, Wayne93 min
May 26, 2:25 PM CDTMesoscale DiscussionSPCMartin, Pike95 min
May 26, 5:18 PM CDTMesoscale DiscussionSPCCalloway, Fulton87 min
May 25, 8:19 PM CDTMesoscale DiscussionSPCBarton, Jasper, McDonald, Newton86 min
May 25, 9:04 PM CDTTornado WatchSPCBarry, Barton, Bates, Benton, Camden, Cass and 23 more8 hr
May 25, 9:41 PM CDTMesoscale DiscussionSPCAndrew, Buchanan, Cass, Clay, Clinton, Holt and 3 more2 hr
May 25, 9:46 PM CDTSevere Thunderstorm WatchSPCAndrew, Atchison, Buchanan, Caldwell, Carroll, Chariton and 18 more4 hr
May 25, 11:31 PM CDTMesoscale DiscussionSPCButler, Callaway, Camden, Carter, Cole, Crawford and 26 more119 min
May 26, 1:03 AM CDTMesoscale DiscussionSPCBarry, Bollinger, Butler, Camden, Carter, Christian and 29 more117 min
May 26, 4:12 AM CDTMesoscale DiscussionSPCBarry, Carter, Christian, Dade, Dallas, Dent and 17 more93 min
May 26, 1:36 PM CDTMesoscale DiscussionSPCBarry, Barton, Benton, Camden, Cedar, Christian and 17 more2 hr
May 26, 3:28 PM CDTTornado WatchSPCBarry, Barton, Benton, Camden, Cedar, Christian and 19 more5 hr
May 26, 5:47 PM CDTMesoscale DiscussionSPCCarter, Christian, Dent, Douglas, Howell, Iron and 10 more88 min

Nearby

Mesoscale Discussions in Kentucky, 2024Mesoscale Discussions in Illinois, 2024Mesoscale Discussions in Indiana, 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.