Alert archive / Mississippi / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 180

April 29, 200223 counties in Alabama; Haralson County, Georgia; 25 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Apr 29, 2002, 12:00 AM CDT for 23 counties in Alabama; Haralson County, Georgia; 25 counties in Mississippi. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 29, 2002, 12:00 AM CDT (05:00 UTC)
Expired
Apr 29, 2002, 4:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 49 counties

Autauga County, AL, Bibb County, AL, Calhoun County, AL, Chambers County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Elmore County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lee County, AL, Perry County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Haralson County, GA, Attala County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Holmes County, MS, Humphreys County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 29, 12:05 AM CDTSevere Thunderstorm WarningBMXTalladega25 min
Apr 29, 12:21 AM CDTSevere Thunderstorm WarningJANHumphreys, Sunflower24 min
Apr 29, 12:30 AM CDTSevere Thunderstorm WarningJANHolmes, Leflore45 min
Apr 29, 12:47 AM CDTSevere Thunderstorm WarningJANSunflower23 min
Apr 29, 12:55 AM CDTSevere Thunderstorm WarningBMXRandolph35 min
Apr 29, 12:58 AM CDTSevere Thunderstorm WarningBMXTallapoosa47 min
Apr 29, 1:06 AM CDTSevere Thunderstorm WarningJANCarroll24 min
Apr 29, 1:24 AM CDTSevere Thunderstorm WarningBMXJefferson36 min
Apr 29, 1:56 AM CDTSevere Thunderstorm WarningJANChoctaw34 min

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 5.0 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, Jackson, MS at 00:00Z on 2002-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1827 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2002-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
1827 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1282 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 8:00 PM CDTSevere Thunderstorm WatchSPCBlount, Calhoun, Cherokee, Cleburne, Colbert, Cullman and 19 more4 hr
Apr 29, 3:30 PM CDTSevere Thunderstorm WatchSPCBaldwin, Choctaw, Clarke, Conecuh, Covington, Escambia and 5 more5 hr
Apr 29, 3:00 PM CDTSevere Thunderstorm WatchSPCBolivar, Coahoma, Humphreys, Leflore, Quitman, Sunflower and 2 more5 hr

Nearby

Severe Thunderstorm Watches in Mississippi, 2002Severe Thunderstorm Watches in Alabama, 2002Severe Thunderstorm Watches in Georgia, 2002Every severe thunderstorm watch in 2002

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.