Alert archive / Louisiana / Tornado Watches in 2006

Tornado Watch 334

May 10, 200623 parishes in Louisiana; 12 counties in Texas

The Storm Prediction Center issued this tornado watch at May 10, 2006, 1:13 PM CDT for 23 parishes in Louisiana; 12 counties in Texas. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2006, 1:13 PM CDT (18:13 UTC)
Expired
May 10, 2006, 8:54 PM CDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
60 kt
All 35 counties

Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Evangeline Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Cherokee County, TX, Hardin County, TX, Jasper County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Tyler County, TX

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 10, 2:37 PM CDTSevere Thunderstorm WarningSHVNacogdoches38 min
May 10, 2:58 PM CDTSevere Thunderstorm WarningSHVDe Soto47 min
May 10, 3:15 PM CDTSevere Thunderstorm WarningSHVUnion60 min
May 10, 3:19 PM CDTSevere Thunderstorm WarningSHVSan Augustine41 min
May 10, 3:29 PM CDTSevere Thunderstorm WarningSHVSabine46 min
May 10, 3:46 PM CDTSevere Thunderstorm WarningSHVSabine59 min
May 10, 3:56 PM CDTSevere Thunderstorm WarningSHVOuachita34 min
May 10, 4:04 PM CDTSevere Thunderstorm WarningSHVSan Augustine26 min
May 10, 4:12 PM CDTSevere Thunderstorm WarningSHVSabine48 min
May 10, 4:17 PM CDTSevere Thunderstorm WarningLCHJasper, Newton58 min
May 10, 4:26 PM CDTTornado WarningSHVSan Augustine34 min
May 10, 4:27 PM CDTSevere Thunderstorm WarningSHVJackson30 min
May 10, 4:30 PM CDTTornado WarningSHVSabine30 min
May 10, 4:34 PM CDTTornado WarningLCHJasper, Newton56 min
May 10, 4:45 PM CDTSevere Thunderstorm WarningLCHHardin45 min
May 10, 5:06 PM CDTSevere Thunderstorm WarningLCHVernon54 min
May 10, 5:10 PM CDTSevere Thunderstorm WarningSHVNatchitoches31 min
May 10, 5:13 PM CDTSevere Thunderstorm WarningLCHRapides47 min
May 10, 5:26 PM CDTTornado WarningLCHNewton49 min
May 10, 5:30 PM CDTSevere Thunderstorm WarningLCHHardin45 min
May 10, 5:50 PM CDTTornado WarningLCHBeauregard40 min
May 10, 6:31 PM CDTSevere Thunderstorm WarningLCHBeauregard59 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

Shreveport, LA (KSHV), launched 12:00Z, 6.2 hours before the alert went out and 95 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, Shreveport, LA at 12:00Z on 2006-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2609 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, Shreveport, LA at 12:00Z on 2006-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 258 square meters per square second.19395878Sfc1 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
2609 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
528 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
258 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 10:57 AM CDTMesoscale DiscussionSPCCaldwell, Catahoula, Claiborne, East Carroll, Franklin, Jackson and 9 more2 hr
May 10, 12:03 PM CDTTornado WatchSPCCatahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more9 hr
May 10, 12:50 PM CDTMesoscale DiscussionSPCBienville, De Soto, Grant, Jackson, Natchitoches, Red River and 2 more115 min
May 10, 2:42 PM CDTMesoscale DiscussionSPCCaldwell, Catahoula, East Carroll, Franklin, Jackson, LaSalle and 6 more2 hr
May 10, 6:05 PM CDTMesoscale DiscussionSPCAcadia, Ascension, Assumption, Cameron, East Baton Rouge, East Feliciana and 20 more85 min
May 9, 8:06 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Donley, Gray, Hall, Hardeman and 2 more84 min
May 9, 9:18 PM CDTTornado WatchSPCBowie, Red River6 hr
May 9, 9:38 PM CDTMesoscale DiscussionSPCArcher, Clay, Cooke, Fannin, Grayson, Hardeman and 5 more97 min
May 9, 10:46 PM CDTSevere Thunderstorm WatchSPCArcher, Clay, Collin, Cooke, Delta, Fannin and 6 more7 hr
May 10, 4:01 AM CDTMesoscale DiscussionSPCBowie, Collin, Cooke, Delta, Fannin, Franklin and 8 more89 min
May 10, 4:24 AM CDTSevere Thunderstorm WatchSPCBowie, Cass, Franklin, Morris, Red River, Titus8 hr
May 10, 6:27 AM CDTMesoscale DiscussionSPCBowie, Red River93 min
May 10, 2:34 PM CDTMesoscale DiscussionSPCAransas, Austin, Bee, Brazoria, Brooks, Calhoun and 26 more116 min
May 10, 2:59 PM CDTSevere Thunderstorm WatchSPCAustin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 11 more5 hr
May 10, 3:20 PM CDTSevere Thunderstorm WatchSPCAransas, Bee, Brooks, Calhoun, Cameron, DeWitt and 15 more7 hr
May 10, 5:04 PM CDTMesoscale DiscussionSPCBrazoria, Calhoun, Chambers, Colorado, Fort Bend, Galveston and 5 more116 min
May 10, 6:06 PM CDTMesoscale DiscussionSPCAransas, Brooks, Hidalgo, Jim Hogg, Jim Wells, Kenedy and 6 more114 min

Nearby

Tornado Watches in Louisiana, 2006Tornado Watches in Texas, 2006Every tornado watch in 2006

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.