Alert archive / Louisiana / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 202

April 24, 200019 parishes in Louisiana; 6 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Apr 24, 2000, 1:15 AM CDT for 19 parishes in Louisiana; 6 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 24, 2000, 1:15 AM CDT (06:15 UTC)
Expired
Apr 24, 2000, 6:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Ascension Parish, LA, Assumption Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Parish, LA, Lafayette Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Terrebonne Parish, LA, West Baton Rouge Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Stone County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 24, 1:54 AM CDTSevere Thunderstorm WarningLIXPearl River36 min
Apr 24, 2:23 AM CDTSevere Thunderstorm WarningMOBStone37 min
Apr 24, 2:39 AM CDTTornado WarningMOBStone36 min
Apr 24, 3:07 AM CDTSevere Thunderstorm WarningMOBGeorge53 min

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.3 hours before the alert went out and 100 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 00:00Z on 2000-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 89 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 00:00Z on 2000-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 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
89 J/kg
Mixed-layer CIN
-269 J/kg
Mixed-layer LCL
924 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 8:00 PM CDTTornado WatchSPCBienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 19 more6 hr
Apr 23, 9:30 PM CDTTornado WatchSPCAllen, Avoyelles, Beauregard, East Baton Rouge, East Feliciana, Evangeline and 8 more6 hr
Apr 23, 8:00 PM CDTSevere Thunderstorm WatchSPCBolivar, Coahoma, Sunflower6 hr
Apr 23, 10:45 PM CDTSevere Thunderstorm WatchSPCAdams, Claiborne, Clarke, Copiah, Covington, Franklin and 18 more4 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 2000Severe Thunderstorm Watches in Mississippi, 2000Every severe thunderstorm watch in 2000

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.