Alert archive / Mississippi / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 801

July 22, 2003Choctaw County, Alabama; 10 parishes in Louisiana; 35 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2003, 2:30 PM CDT for Choctaw County, Alabama; 10 parishes in Louisiana; 35 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 22, 2003, 2:30 PM CDT (19:30 UTC)
Expired
Jul 22, 2003, 8:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 46 counties

Choctaw County, AL, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Madison Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Washington Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hinds County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Newton County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Warren County, MS, Wayne County, MS, Wilkinson County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 22, 2:34 PM CDTSevere Thunderstorm WarningJANClarke31 min
Jul 22, 2:40 PM CDTSevere Thunderstorm WarningJANLauderdale60 min
Jul 22, 2:44 PM CDTSevere Thunderstorm WarningJANJasper51 min
Jul 22, 3:08 PM CDTSevere Thunderstorm WarningJANClarke42 min
Jul 22, 3:19 PM CDTSevere Thunderstorm WarningJANJones41 min
Jul 22, 4:03 PM CDTSevere Thunderstorm WarningJANJones42 min
Jul 22, 4:07 PM CDTSevere Thunderstorm WarningJANCovington38 min
Jul 22, 4:45 PM CDTTornado WarningLIXEast Baton Rouge30 min
Jul 22, 4:47 PM CDTSevere Thunderstorm WarningJANForrest, Lamar58 min
Jul 22, 5:05 PM CDTSevere Thunderstorm WarningJANJones40 min
Jul 22, 5:11 PM CDTSevere Thunderstorm WarningJANNeshoba, Newton, Scott59 min
Jul 22, 5:25 PM CDTSevere Thunderstorm WarningMOBPerry35 min
Jul 22, 6:22 PM CDTSevere Thunderstorm WarningJANScott, Smith63 min
Jul 22, 6:34 PM CDTSevere Thunderstorm WarningJANMadison, Rankin61 min
Jul 22, 6:36 PM CDTSevere Thunderstorm WarningJANJasper44 min
Jul 22, 7:24 PM CDTSevere Thunderstorm WarningJANSmith46 min
Jul 22, 7:39 PM CDTSevere Thunderstorm WarningJANJasper46 min

Discussions around it

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

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 7.5 hours before the alert went out and 55 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, Jackson, MS at 12:00Z on 2003-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2581 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, Jackson, MS at 12:00Z on 2003-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
2581 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
680 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 6:40 AM CDTSevere Thunderstorm WatchSPCColbert, Franklin, Lauderdale, Lawrence, Marion, Winston3 hr
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, 2:40 PM CDTSevere Thunderstorm WatchSPCBaldwin, Barbour, Bullock, Butler, Clarke, Coffee and 16 more5 hr
Jul 22, 6:21 PM CDTMesoscale DiscussionSPCWashington54 min
Jul 22, 1:42 PM CDTMesoscale DiscussionSPCAvoyelles, Bienville, Caldwell, Catahoula, Concordia, De Soto and 15 more2 hr
Jul 22, 4:50 PM CDTMesoscale DiscussionSPCBossier, Caddo, De Soto, Webster85 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

Nearby

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