Alert archive / Tennessee / Mesoscale Discussions in 2010

Mesoscale Discussion 372

April 24, 20106 states

The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2010, 9:31 AM CDT for 6 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Apr 24, 2010, 9:31 AM CDT (14:31 UTC)
Expired
Apr 24, 2010, 10:30 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 145 counties

Colbert County, AL, Fayette County, AL, Franklin County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Morgan County, AL, Winston County, AL, Arkansas County, AR, Ashley County, AR, Chicot County, AR, Cleveland County, AR, Crittenden County, AR, Cross County, AR, Desha County, AR, Drew County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, St. Francis County, AR, Woodruff County, AR, Allen County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Webster County, KY, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Attala County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Marshall County, MS, Monroe County, MS, Montgomery County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Coffee County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Franklin County, TN, Gibson County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Moore County, TN, Obion County, TN, Perry County, TN, Robertson County, TN, Rutherford County, TN, Shelby County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN

The radar

The Memphis radar (KNQA), 81 km from the middle of the area, began a volume at 14:34 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

Little Rock, AR (KLZK), launched 12:00Z, 2.5 hours before the alert went out and 93 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, Little Rock, AR at 12:00Z on 2010-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Little Rock, AR at 12:00Z on 2010-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -254 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-254 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 7:39 PM CDTMesoscale DiscussionSPCBaldwin, Bibb, Choctaw, Clarke, Conecuh, Dallas and 12 more36 min
Apr 23, 10:32 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Chilton, Choctaw, Clarke, Dallas and 11 more58 min
Apr 24, 2:07 AM CDTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Conecuh, Covington, Escambia and 3 more53 min
Apr 24, 6:15 AM CDTTornado WatchSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Mobile and 3 more7 hr
Apr 24, 7:43 AM CDTMesoscale DiscussionSPCAutauga, Bibb, Chilton, Coosa, Cullman, Dallas and 18 more2 hr
Apr 24, 8:01 AM CDTTornado Watch PDSSPCAutauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 34 more5 hr
Apr 24, 10:28 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Blount, Butler, Calhoun and 32 more92 min
Apr 24, 11:40 AM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Bullock, Butler, Calhoun and 39 more95 min
Apr 24, 12:47 PM CDTTornado WatchSPCBaldwin, Butler, Choctaw, Clarke, Coffee, Conecuh and 11 more7 hr
Apr 24, 1:17 PM CDTTornado Watch PDSSPCAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 44 more8 hr
Apr 24, 2:01 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Chilton, Colbert, Cullman and 24 more89 min
Apr 24, 5:48 PM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Blount, Bullock and 61 more57 min
Apr 23, 11:40 PM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clay, Cleveland, Craighead and 25 more65 min
Apr 24, 1:20 AM CDTMesoscale DiscussionSPCColumbia, Lafayette25 min
Apr 24, 1:50 AM CDTTornado WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more8 hr
Apr 24, 2:44 AM CDTMesoscale DiscussionSPCArkansas, Cleburne, Cleveland, Craighead, Crittenden, Cross and 24 more91 min
Apr 24, 3:02 AM CDTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Cleveland, Dallas and 14 more8 hr
Apr 24, 5:01 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Columbia, Drew and 2 more89 min
Apr 24, 6:00 AM CDTTornado Watch PDSSPCAshley, Chicot, Clay, Craighead, Crittenden, Cross and 8 more6 hr
Apr 24, 7:25 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Cleveland, Drew, Jefferson and 3 more95 min
Apr 24, 11:08 AM CDTMesoscale DiscussionSPCArkansas, Baxter, Clay, Cleburne, Conway, Craighead and 24 more67 min
Apr 24, 11:31 AM CDTTornado Watch PDSSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more8 hr
Apr 24, 1:52 PM CDTMesoscale DiscussionSPCBaxter, Boone, Marion53 min
Apr 24, 7:35 AM CDTMesoscale DiscussionSPCBallard, Caldwell, Carlisle, Crittenden, Fulton, Graves and 10 more55 min
Apr 24, 5:45 PM CDTMesoscale DiscussionSPCAdair, Anderson, Bath, Bell, Boone, Bourbon and 67 more60 min
Apr 24, 6:15 PM CDTTornado WatchSPCAdair, Allen, Anderson, Barren, Bath, Bell and 81 more8 hr
Apr 23, 7:06 PM CDTTornado WatchSPCAdair, Audrain, Boone, Callaway, Chariton, Howard and 17 more5 hr
Apr 23, 10:03 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Bates, Buchanan, Caldwell, Cass and 12 more27 min
Apr 23, 10:58 PM CDTTornado WatchSPCAndrew, Atchison, Buchanan, Caldwell, Carroll, Clay and 15 more5 hr
Apr 24, 3:15 AM CDTMesoscale DiscussionSPCCaldwell, Carroll, Daviess, Grundy, Livingston, Mercer and 1 more30 min
Apr 24, 1:29 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Gentry, Harrison, Holt, Mercer and 2 more91 min
Apr 24, 2:52 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Gasconade, Iron, Jefferson, Saint Charles and 6 more53 min
Apr 24, 3:20 PM CDTTornado WatchSPCFranklin, Gasconade, Jefferson, Lewis, Lincoln, Marion and 7 more7 hr
Apr 24, 5:14 PM CDTMesoscale DiscussionSPCFranklin, Gasconade, Jefferson, Lincoln, Montgomery, Pike and 5 more61 min

Nearby

Mesoscale Discussions in Tennessee, 2010Mesoscale Discussions in Mississippi, 2010Mesoscale Discussions in Kentucky, 2010Every mesoscale discussion in 2010

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.