Alert archive / Mississippi / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 797

July 22, 20036 counties in Alabama; 9 counties in Mississippi; 6 counties in Tennessee

The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2003, 6:40 AM CDT for 6 counties in Alabama; 9 counties in Mississippi; 6 counties in Tennessee. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jul 22, 2003, 6:40 AM CDT (11:40 UTC)
Expired
Jul 22, 2003, 10:00 AM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 21 counties

Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Marion County, AL, Winston County, AL, Alcorn County, MS, Benton County, MS, Itawamba County, MS, Lee County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Chester County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, McNairy County, TN, Wayne County, TN

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 22, 6:49 AM CDTSevere Thunderstorm WarningMEGAlcorn26 min
Jul 22, 7:04 AM CDTSevere Thunderstorm WarningMEGTishomingo41 min
Jul 22, 7:21 AM CDTSevere Thunderstorm WarningHUNLauderdale54 min
Jul 22, 7:22 AM CDTSevere Thunderstorm WarningMEGBenton38 min
Jul 22, 7:30 AM CDTSevere Thunderstorm WarningMEGHardeman45 min
Jul 22, 7:34 AM CDTSevere Thunderstorm WarningMEGTippah26 min
Jul 22, 7:53 AM CDTSevere Thunderstorm WarningMEGAlcorn52 min
Jul 22, 7:58 AM CDTFlash Flood WarningHUNLauderdale4 hr
Jul 22, 8:01 AM CDTSevere Thunderstorm WarningMEGTippah14 min
Jul 22, 8:03 AM CDTSevere Thunderstorm WarningMEGPrentiss, Tishomingo42 min
Jul 22, 8:06 AM CDTSevere Thunderstorm WarningMEGHardin39 min
Jul 22, 8:21 AM CDTSevere Thunderstorm WarningHUNLauderdale29 min
Jul 22, 8:41 AM CDTSevere Thunderstorm WarningOHXLawrence, Wayne64 min
Jul 22, 8:46 AM CDTSevere Thunderstorm WarningHUNColbert44 min
Jul 22, 8:50 AM CDTSevere Thunderstorm WarningHUNLauderdale40 min
Jul 22, 9:02 AM CDTFlash Flood WarningOHXGiles, Lawrence, Lincoln, Wayne3 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

Little Rock, AR (KLZK), launched 00:00Z, 11.7 hours before the alert went out and 164 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 00:00Z on 2003-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3035 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 00:00Z on 2003-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.1939Sfc1 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
3035 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1538 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.3
Supercell composite
9.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 11:31 AM CDTMesoscale DiscussionSPCBullock, Calhoun, Chambers, Chilton, Clay, Cleburne and 8 more119 min
Jul 22, 11:55 AM CDTSevere Thunderstorm WatchSPCAutauga, Bibb, Calhoun, Chambers, Cherokee, Chilton and 19 more5 hr
Jul 22, 1:15 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Bullock, Butler, Chambers, Coffee and 18 more2 hr
Jul 22, 2:30 PM CDTSevere Thunderstorm WatchSPCChoctaw6 hr
Jul 22, 2:40 PM CDTSevere Thunderstorm WatchSPCBaldwin, Barbour, Bullock, Butler, Clarke, Coffee and 16 more5 hr
Jul 22, 6:21 PM CDTMesoscale DiscussionSPCWashington54 min
Jul 22, 2:49 AM CDTMesoscale DiscussionSPCCoahoma, DeSoto, Quitman, Tunica116 min
Jul 22, 3:45 AM CDTSevere Thunderstorm WatchSPCCalhoun, Chickasaw, Coahoma, DeSoto, Lafayette, Marshall and 6 more5 hr
Jul 22, 4:47 AM CDTMesoscale DiscussionSPCCoahoma, Quitman, Tate, Tunica118 min
Jul 22, 6:29 AM CDTMesoscale DiscussionSPCAlcorn, Benton, DeSoto, Marshall, Prentiss, Tippah and 2 more91 min
Jul 22, 1:42 PM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Covington, Forrest and 18 more2 hr

Nearby

Severe Thunderstorm Watches in Mississippi, 2003Severe Thunderstorm Watches in Alabama, 2003Severe Thunderstorm Watches in Tennessee, 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.