Alert archive / Tennessee / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 831

August 2, 20036 states

The Storm Prediction Center issued this severe thunderstorm watch at Aug 2, 2003, 4:30 AM CDT for 6 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Aug 2, 2003, 4:30 AM CDT (09:30 UTC)
Expired
Aug 2, 2003, 11:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 92 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Union County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dent County, MO, Dunklin County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 2, 5:00 AM CDTSevere Thunderstorm WarningLZKSharp50 min
Aug 2, 5:48 AM CDTSevere Thunderstorm WarningLSXIron, Reynolds27 min
Aug 2, 7:46 AM CDTSevere Thunderstorm WarningLZKJackson39 min
Aug 2, 9:24 AM CDTFlash Flood WarningLZKJackson2 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 9.5 hours before the alert went out and 322 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, Springfield, MO at 00:00Z on 2003-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 483 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, Springfield, MO at 00:00Z on 2003-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 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
483 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1986 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 1, 8:53 PM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Cleburne, Conway, Crawford and 13 more97 min
Aug 2, 1:05 AM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Izard and 8 more6 hr
Aug 2, 3:26 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Crawford and 10 more64 min
Aug 2, 6:48 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Independence and 14 more57 min
Aug 2, 12:22 PM CDTMesoscale DiscussionSPCAshley, Bradley, Chicot, Desha, Drew, Lincoln113 min
Aug 1, 7:20 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 8 more85 min
Aug 2, 4:30 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 23 more6 hr
Aug 2, 11:58 AM CDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Bourbon and 58 more2 hr
Aug 2, 4:44 PM CDTMesoscale DiscussionSPCAdams, Amite, Attala, Chickasaw, Choctaw, Claiborne and 28 more91 min
Aug 1, 11:54 PM CDTMesoscale DiscussionSPCBarton, Bates, Cedar, Vernon96 min
Aug 2, 3:15 PM CDTMesoscale DiscussionSPCAudrain, Boone, Callaway, Cole, Cooper, Henry and 8 more2 hr

Nearby

Severe Thunderstorm Watches in Tennessee, 2003Severe Thunderstorm Watches in Arkansas, 2003Severe Thunderstorm Watches in Missouri, 2003Every severe thunderstorm watch 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.