Alert archive / Tennessee / Mesoscale Discussions in 2003

Mesoscale Discussion 757

May 5, 20034 states

The Storm Prediction Center issued this mesoscale discussion at May 5, 2003, 7:11 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2003, 7:11 AM CDT (12:11 UTC)
Expired
May 5, 2003, 9:15 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 77 counties

Colbert County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Crittenden County, AR, Cross County, AR, Lee County, AR, Mississippi County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Marshall County, MS, Prentiss County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Franklin County, TN, Gibson County, TN, Giles County, TN, Grundy 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, Jackson County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Madison County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Moore County, TN, Perry County, TN, Putnam 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, Warren County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN

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, 0.2 hours before the alert went out and 153 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 2003-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2211 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, Little Rock, AR at 12:00Z on 2003-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.1939587897117Sfc1 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
2211 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
850 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.3

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
May 5, 4:18 AM CDTMesoscale DiscussionSPCColbert, Lauderdale57 min
May 5, 4:55 AM CDTTornado WatchSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 1 more6 hr
May 5, 6:07 AM CDTMesoscale DiscussionSPCDeKalb, Jackson, Marshall83 min
May 5, 6:15 AM CDTTornado WatchSPCDeKalb, Jackson, Marshall3 hr
May 5, 8:50 AM CDTTornado WatchSPCBibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 13 more6 hr
May 5, 9:05 AM CDTMesoscale DiscussionSPCColbert, Cullman, Fayette, Franklin, Greene, Hale and 13 more115 min
May 5, 9:35 AM CDTTornado WatchSPCColbert, Cullman, Fayette, Franklin, Greene, Lamar and 10 more5 hr
May 5, 10:38 AM CDTMesoscale DiscussionSPCBibb, Blount, Colbert, Cullman, Fayette, Franklin and 15 more3 hr
May 5, 11:06 AM CDTMesoscale DiscussionSPCBibb, Colbert, Cullman, Fayette, Franklin, Greene and 12 more114 min
May 5, 12:52 PM CDTMesoscale DiscussionSPCBibb, Calhoun, Chambers, Cherokee, Chilton, Clay and 11 more113 min
May 5, 2:13 PM CDTMesoscale DiscussionSPCBibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 32 more62 min
May 5, 2:35 PM CDTTornado WatchSPCBibb, Blount, Colbert, Cullman, Fayette, Franklin and 15 more7 hr
May 5, 5:40 PM CDTMesoscale DiscussionSPCBlount, Calhoun, Chambers, Cherokee, Clay, Cleburne and 26 more2 hr
May 4, 7:19 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 21 more86 min
May 4, 7:34 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Jackson and 7 more116 min
May 4, 9:26 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Jackson and 7 more2 hr
May 4, 9:42 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 29 more93 min
May 5, 12:50 AM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 34 more5 hr
May 5, 1:20 AM CDTTornado WatchSPCArkansas, Clay, Craighead, Crittenden, Cross, Greene and 7 more6 hr
May 5, 9:56 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 33 more2 hr
May 5, 10:40 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 21 more5 hr
May 5, 1:05 PM CDTTornado WatchSPCCleburne, Conway, Craighead, Crawford, Crittenden, Cross and 21 more3 hr
May 5, 1:13 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clark, Cleveland and 17 more2 hr
May 5, 3:25 PM CDTTornado WatchSPCArkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 62 more7 hr
May 5, 5:18 PM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Clark, Cleveland, Columbia and 24 more117 min
May 4, 11:37 PM CDTMesoscale DiscussionSPCBedford, Cannon, Cheatham, Clay, Coffee, Davidson and 29 more23 min
May 4, 11:45 PM CDTTornado WatchSPCBedford, Cannon, Cheatham, Clay, Coffee, Davidson and 30 more5 hr
May 5, 2:31 AM CDTMesoscale DiscussionSPCAnderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 42 more89 min
May 5, 3:15 AM CDTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 25 more6 hr
May 5, 11:59 AM CDTMesoscale DiscussionSPCPickett61 min

Nearby

Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Mississippi, 2003Mesoscale Discussions in Alabama, 2003Every mesoscale discussion in 2003

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.