Alert archive / Louisiana / Tornado Watches in 2006

Tornado Watch 48

March 9, 200611 counties in Arkansas; 39 parishes in Louisiana; 39 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 9, 2006, 5:48 AM CST for 11 counties in Arkansas; 39 parishes in Louisiana; 39 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 9, 2006, 5:48 AM CST (11:48 UTC)
Expired: Mar 9, 2006, 11:48 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 89 counties

Ashley County, AR, Chicot County, AR, Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Cameron Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, Union Parish, LA, Vermilion Parish, LA, Vernon Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Franklin County, TX, Galveston County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Newton County, TX, Orange County, TX, Panola County, TX, Polk County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Wood County, TX

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 9, 5:56 AM CST	Severe Thunderstorm Warning	SHV	Franklin, Red River	64 min
Mar 9, 6:29 AM CST	Severe Thunderstorm Warning	SHV	Cherokee	61 min
Mar 9, 6:37 AM CST	Severe Thunderstorm Warning	SHV	Titus	53 min
Mar 9, 7:08 AM CST	Severe Thunderstorm Warning	SHV	Little River	67 min
Mar 9, 7:16 AM CST	Severe Thunderstorm Warning	SHV	Rusk	44 min
Mar 9, 7:21 AM CST	Tornado Warning	SHV	Sevier	39 min
Mar 9, 7:33 AM CST	Severe Thunderstorm Warning	SHV	Nacogdoches, Panola	57 min
Mar 9, 7:46 AM CST	Tornado Warning	SHV	Howard	44 min
Mar 9, 7:57 AM CST	Severe Thunderstorm Warning	SHV	Harrison	33 min
Mar 9, 8:17 AM CST	Severe Thunderstorm Warning	SHV	Caddo, De Soto	43 min
Mar 9, 8:31 AM CST	Severe Thunderstorm Warning	SHV	Hempstead	44 min
Mar 9, 8:36 AM CST	Severe Thunderstorm Warning	SHV	Bossier	39 min
Mar 9, 8:44 AM CST	Severe Thunderstorm Warning	SHV	Sabine, San Augustine	46 min
Mar 9, 8:55 AM CST	Severe Thunderstorm Warning	SHV	Webster	50 min
Mar 9, 9:10 AM CST	Severe Thunderstorm Warning	SHV	Columbia	50 min
Mar 9, 9:22 AM CST	Severe Thunderstorm Warning	SHV	Claiborne	38 min
Mar 9, 9:33 AM CST	Severe Thunderstorm Warning	SHV	Union	57 min
Mar 9, 9:42 AM CST	Severe Thunderstorm Warning	SHV	Bienville, Lincoln	48 min
Mar 9, 9:48 AM CST	Severe Thunderstorm Warning	SHV	Union	57 min
Mar 9, 9:57 AM CST	Severe Thunderstorm Warning	SHV	Jackson	48 min
Mar 9, 10:08 AM CST	Severe Thunderstorm Warning	LCH	Newton	67 min
Mar 9, 10:23 AM CST	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	67 min
Mar 9, 10:24 AM CST	Severe Thunderstorm Warning	SHV	Ouachita	51 min
Mar 9, 10:32 AM CST	Severe Thunderstorm Warning	JAN	Ashley	50 min
Mar 9, 11:04 AM CST	Severe Thunderstorm Warning	JAN	Chicot	56 min
Mar 9, 11:21 AM CST	Severe Thunderstorm Warning	JAN	East Carroll, Richland, West Carroll	54 min
Mar 9, 11:25 AM CST	Severe Thunderstorm Warning	JAN	Chicot	50 min
Mar 9, 11:32 AM CST	Severe Thunderstorm Warning	JAN	Franklin	43 min
Mar 9, 11:34 AM CST	Tornado Warning	JAN	Chicot	41 min
Mar 9, 11:39 AM CST	Severe Thunderstorm Warning	JAN	Catahoula	51 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.8 hours before the alert went out and 133 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 485 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 709 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 091150
SEL8  
SPC WW 091150
ARZ000-LAZ000-OKZ000-TXZ000-CWZ000-091900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 48
NWS STORM PREDICTION CENTER NORMAN OK
550 AM CST THU MAR 9 2006

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTHERN ARKANSAS
       LOUISIANA
       FAR SOUTHEAST OKLAHOMA
       EASTERN TEXAS
       COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 550 AM UNTIL
100 PM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF
PORT ARTHUR TEXAS TO 15 MILES NORTH OF EL DORADO ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 44...WW 45...WW 46...WW
47...

DISCUSSION...THUNDERSTORMS ARE INCREASING ALONG ADVANCING COLD FRONT
OVER EASTERN TX.  SUPERCELLS SHOULD EMERGE AND MATURE OVER THE NEXT
FEW HOURS AS VERY STRONG...90-100 KT...MID LEVEL SPEED MAX EJECTS
ACROSS REGION. WITH TIME...DAMAGING SQUALL LINE WITH TORNADOES AND
STRONG WINDS CAN BE EXPECTED.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26040.


...DARROW/EVANS

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 9, 1:14 AM CST	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Crawford and 16 more	6 hr
Mar 9, 1:36 AM CST	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 33 more	5 hr
Mar 9, 1:57 AM CST	Mesoscale Discussion	SPC	Polk, Scott, Sebastian	63 min
Mar 9, 6:10 AM CST	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Cleburne and 30 more	95 min
Mar 9, 6:52 AM CST	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 39 more	6 hr
Mar 9, 10:30 AM CST	Mesoscale Discussion	SPC	Arkansas, Bradley, Clay, Cleveland, Craighead, Crittenden and 18 more	2 hr
Mar 9, 10:34 AM CST	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more	116 min
Mar 9, 11:05 AM CST	Mesoscale Discussion	SPC	Chicot	85 min
Mar 9, 11:29 AM CST	Tornado Watch	SPC	Chicot	7 hr
Mar 9, 12:30 PM CST	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Conway, Crawford and 20 more	6 hr
Mar 9, 1:55 PM CST	Mesoscale Discussion	SPC	Clark, Cleburne, Faulkner, Fulton, Grant, Hot Spring and 14 more	2 hr
Mar 9, 3:06 PM CST	Mesoscale Discussion	SPC	Baxter, Boone, Conway, Marion, Newton, Perry and 3 more	84 min
Mar 9, 4:44 PM CST	Mesoscale Discussion	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	61 min
Mar 9, 5:18 PM CST	Tornado Watch	SPC	Clay, Craighead, Greene, Mississippi	3 hr
Mar 9, 5:14 AM CST	Mesoscale Discussion	SPC	Acadia, Allen, Avoyelles, Beauregard, Bienville, Bossier and 29 more	91 min
Mar 9, 1:52 PM CST	Mesoscale Discussion	SPC	Acadia, Ascension, Assumption, Cameron, East Baton Rouge, East Feliciana and 20 more	83 min
Mar 9, 3:51 PM CST	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 12 more	54 min
Mar 9, 5:43 PM CST	Mesoscale Discussion	SPC	Ascension, Assumption, East Baton Rouge, Iberville, Jefferson, Lafourche and 15 more	32 min
Mar 8, 8:22 PM CST	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Cooke, Denton and 16 more	53 min
Mar 8, 10:51 PM CST	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Camp, Clay, Collin and 40 more	24 min
Mar 8, 11:02 PM CST	Mesoscale Discussion	SPC	Atascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 32 more	88 min
Mar 8, 11:25 PM CST	Tornado Watch	SPC	Anderson, Bastrop, Bell, Bexar, Blanco, Burnet and 31 more	7 hr
Mar 8, 11:42 PM CST	Tornado Watch	SPC	Archer, Baylor, Camp, Clay, Collin, Cooke and 17 more	6 hr

Nearby

Tornado Watches in Louisiana, 2006 Tornado Watches in Texas, 2006 Tornado Watches in Arkansas, 2006 Every 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.