Alert archive / Mississippi / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 526

June 12, 20035 counties in Alabama; 12 parishes in Louisiana; 27 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2003, 9:10 AM CDT for 5 counties in Alabama; 12 parishes in Louisiana; 27 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2003, 9:10 AM CDT (14:10 UTC)
Expired
Jun 12, 2003, 2:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 44 counties

Baldwin County, AL, Choctaw County, AL, Clarke County, AL, Mobile County, AL, Washington County, AL, Ascension Parish, LA, Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Amite County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 12, 9:56 AM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson64 min
Jun 12, 9:58 AM CDTSevere Thunderstorm WarningJANForrest42 min
Jun 12, 10:24 AM CDTSevere Thunderstorm WarningLIXAscension, Assumption, Livingston, Saint James36 min
Jun 12, 11:04 AM CDTSevere Thunderstorm WarningLIXSaint James, Tangipahoa41 min
Jun 12, 11:15 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington45 min
Jun 12, 11:17 AM CDTSevere Thunderstorm WarningJANJefferson Davis, Simpson43 min
Jun 12, 11:19 AM CDTSevere Thunderstorm WarningJANLawrence31 min
Jun 12, 11:23 AM CDTSevere Thunderstorm WarningJANSmith47 min
Jun 12, 11:42 AM CDTSevere Thunderstorm WarningLIXPearl River63 min
Jun 12, 1:26 PM CDTSevere Thunderstorm WarningLIXHarrison34 min
Jun 12, 1:49 PM CDTSevere Thunderstorm WarningLIXJackson41 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.2 hours before the alert went out and 105 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, Slidell Radar S, LA at 12:00Z on 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1553 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, Slidell Radar S, LA at 12:00Z on 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
1553 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
852 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 7:50 PM CDTSevere Thunderstorm WatchSPCBibb, Chilton, Coosa, Fayette, Greene, Hale and 10 more5 hr
Jun 11, 9:18 PM CDTMesoscale DiscussionSPCBibb, Chilton, Fayette, Greene, Hale, Jefferson and 6 more87 min
Jun 12, 8:51 AM CDTMesoscale DiscussionSPCWashington84 min
Jun 12, 11:10 AM CDTMesoscale DiscussionSPCChoctaw, Clarke, Mobile, Washington95 min
Jun 12, 1:15 PM CDTMesoscale DiscussionSPCClarke, Mobile, Washington60 min
Jun 12, 1:34 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Chambers, Chilton, Clay and 19 more86 min
Jun 12, 12:30 AM CDTMesoscale DiscussionSPCBossier, Caddo, De Soto2 hr
Jun 12, 1:10 AM CDTSevere Thunderstorm WatchSPCBossier, Caddo, De Soto4 hr
Jun 12, 4:20 AM CDTMesoscale DiscussionSPCBossier, Caddo, De Soto55 min
Jun 12, 4:40 PM CDTSevere Thunderstorm WatchSPCEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Saint Tammany, Tangipahoa and 2 more4 hr
Jun 11, 7:14 PM CDTMesoscale DiscussionSPCBolivar, Calhoun, Chickasaw, Clay, Coahoma, Grenada and 8 more2 hr

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.