Alert archive / Tennessee / Mesoscale Discussions in 2024

Mesoscale Discussion 974

May 26, 202438 counties in Kentucky; 47 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 26, 2024, 11:52 AM CDT for 38 counties in Kentucky; 47 counties in Tennessee. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
May 26, 2024, 11:52 AM CDT (16:52 UTC)
Expired
May 26, 2024, 1:15 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 315
All 85 counties

Adair County, KY, Allen County, KY, Barren County, KY, Bell County, KY, Boyle County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Garrard County, KY, Green County, KY, Hart County, KY, Jackson County, KY, Jessamine County, KY, Knox County, KY, Laurel County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Campbell County, TN, Cannon County, TN, Cheatham County, TN, Claiborne County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Knox County, TN, Lewis County, TN, Loudon County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Morgan County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 64 km from the middle of the area, began a volume at 16:53 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.9 hours before the alert went out and 74 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.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 2:35 AM CDTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more7 hr
May 26, 7:50 AM CDTMesoscale DiscussionSPCAllen, Ballard, Barren, Breckinridge, Bullitt, Butler and 36 more115 min
May 26, 8:59 AM CDTTornado WatchSPCAdair, Allen, Anderson, Barren, Bell, Boyle and 59 more8 hr
May 26, 10:17 AM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Boyle, Casey and 26 more88 min
May 26, 11:20 AM CDTMesoscale DiscussionSPCBath, Boone, Bourbon, Boyd, Bracken, Campbell and 21 more85 min
May 26, 12:02 PM CDTSevere Thunderstorm WatchSPCBath, Boone, Bourbon, Boyd, Bracken, Campbell and 21 more7 hr
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, 2:38 PM CDTMesoscale DiscussionSPCBallard, Calloway, Carlisle, Fulton, Graves, Hickman and 1 more3 hr
May 26, 2:46 PM CDTMesoscale DiscussionSPCBallard, Butler, Caldwell, Calloway, Carlisle, Christian and 21 more59 min
May 26, 4:01 PM CDTTornado Watch PDSSPCBallard, Calloway, Carlisle, Fulton, Graves, Hickman and 3 more7 hr
May 26, 5:18 PM CDTMesoscale DiscussionSPCCalloway, Fulton87 min
May 26, 6:18 PM CDTMesoscale DiscussionSPCBallard, Breckinridge, Butler, Caldwell, Carlisle, Christian and 21 more87 min
May 26, 6:54 PM CDTTornado WatchSPCAdair, Allen, Barren, Breckinridge, Bullitt, Butler and 37 more6 hr
May 26, 3:42 PM CDTMesoscale DiscussionSPCAnderson, Bledsoe, Blount, Bradley, Cannon, Cumberland and 19 more63 min
May 26, 4:00 PM CDTMesoscale DiscussionSPCCarter, Cocke, Greene, Johnson, Unicoi, Washington90 min
May 26, 5:35 PM CDTMesoscale DiscussionSPCCarter, Cocke, Greene, Sevier, Unicoi, Washington85 min

Nearby

Mesoscale Discussions in Tennessee, 2024Mesoscale Discussions in Kentucky, 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.