Alert archive / Arkansas / Tornado Watches in 2006

Tornado Watch 47

March 9, 200639 counties in Arkansas; Bowie County, Cass County, Texas

The Storm Prediction Center issued this tornado watch at Mar 9, 2006, 1:36 AM CST for 39 counties in Arkansas; Bowie County, Cass County, Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 9, 2006, 1:36 AM CST (07:36 UTC)
Expired
Mar 9, 2006, 7:02 AM CST
In force
5 hr
Issued by
the Storm Prediction Center
All 41 counties

Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sevier County, AR, Union County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bowie County, TX, Cass County, TX

The radar

The Little Rock radar (KLZK), 107 km from the middle of the area, began a volume at 07:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 9, 2:54 AM CSTSevere Thunderstorm WarningLZKJohnson, Logan43 min
Mar 9, 4:37 AM CSTSevere Thunderstorm WarningLZKLonoke, White38 min
Mar 9, 4:39 AM CSTSevere Thunderstorm WarningLZKGrant, Hot Spring51 min
Mar 9, 5:00 AM CSTSevere Thunderstorm WarningLZKSaline30 min
Mar 9, 5:16 AM CSTSevere Thunderstorm WarningLZKJackson, White, Woodruff43 min
Mar 9, 5:17 AM CSTSevere Thunderstorm WarningLZKPulaski28 min
Mar 9, 5:29 AM CSTSevere Thunderstorm WarningLZKLonoke46 min
Mar 9, 5:35 AM CSTSevere Thunderstorm WarningLZKClark25 min
Mar 9, 5:40 AM CSTTornado WarningLZKLonoke35 min
Mar 9, 5:48 AM CSTSevere Thunderstorm WarningLZKHot Spring27 min
Mar 9, 6:09 AM CSTSevere Thunderstorm WarningLZKPrairie51 min
Mar 9, 6:33 AM CSTSevere Thunderstorm WarningLZKWoodruff57 min
Mar 9, 6:48 AM CSTTornado WarningLZKWoodruff27 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 00:00Z, 7.6 hours before the alert went out and 205 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 00:00Z on 2006-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 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 00:00Z on 2006-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
123 J/kg
Mixed-layer CIN
-260 J/kg
Mixed-layer LCL
1573 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 090737
SEL7  
SPC WW 090737
ARZ000-TXZ000-091400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 47
NWS STORM PREDICTION CENTER NORMAN OK
135 AM CST THU MAR 9 2006

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

       CENTRAL AND SOUTHERN ARKANSAS
       FAR NORTHEASTERN TEXAS

EFFECTIVE THIS THURSDAY MORNING FROM 135 AM UNTIL 800 AM 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 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES NORTHWEST OF LITTLE ROCK
ARKANSAS TO 30 MILES WEST SOUTHWEST OF EL DORADO ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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...

DISCUSSION...A SERIES OF BOW ECHOES WILL LIKELY SPREAD EWD ACROSS WW
THROUGH THE EARLY MORNING WITH SUBSTANTIAL SHEAR SUPPORTING
SUPERCELLS BOTH AHEAD OF AND WITH THESE QUASI-LINEAR CONVECTIVE
SYSTEMS.  AIR MASS IS EXPECTED TO DESTABILIZE THROUGH THE NIGHT AS
COOLING ALOFT AND DEEP ASCENT OVERSPREAD THE REGION...FURTHER
ENHANCING THE SEVERE THREAT.  THOUGH DAMAGING WINDS MAY BECOME
PRIMARY SEVERE CONCERN...A FEW TORNADOES ARE ALSO
POSSIBLE...ESPECIALLY ALONG AND SOUTH OF AN OUTFLOW BOUNDARY
EXTENDING E-W ACROSS CENTRAL AR NEAR I-40.

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.


...EVANS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 9, 1:14 AM CSTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Crawford and 16 more6 hr
Mar 9, 1:57 AM CSTMesoscale DiscussionSPCPolk, Scott, Sebastian63 min
Mar 9, 5:48 AM CSTTornado WatchSPCAshley, Chicot, Columbia, Hempstead, Howard, Lafayette and 5 more6 hr
Mar 9, 6:10 AM CSTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clay, Cleburne and 30 more95 min
Mar 9, 6:52 AM CSTTornado WatchSPCArkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 39 more6 hr
Mar 9, 10:30 AM CSTMesoscale DiscussionSPCArkansas, Bradley, Clay, Cleveland, Craighead, Crittenden and 18 more2 hr
Mar 9, 10:34 AM CSTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more116 min
Mar 9, 11:05 AM CSTMesoscale DiscussionSPCChicot85 min
Mar 9, 11:29 AM CSTTornado WatchSPCChicot7 hr
Mar 9, 12:30 PM CSTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Conway, Crawford and 20 more6 hr
Mar 9, 1:55 PM CSTMesoscale DiscussionSPCClark, Cleburne, Faulkner, Fulton, Grant, Hot Spring and 14 more2 hr
Mar 9, 3:06 PM CSTMesoscale DiscussionSPCBaxter, Boone, Conway, Marion, Newton, Perry and 3 more84 min
Mar 9, 4:44 PM CSTMesoscale DiscussionSPCClay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more61 min
Mar 9, 5:18 PM CSTTornado WatchSPCClay, Craighead, Greene, Mississippi3 hr
Mar 8, 8:22 PM CSTMesoscale DiscussionSPCArcher, Baylor, Callahan, Clay, Cooke, Denton and 16 more53 min
Mar 8, 10:51 PM CSTMesoscale DiscussionSPCArcher, Baylor, Callahan, Camp, Clay, Collin and 40 more24 min
Mar 8, 11:02 PM CSTMesoscale DiscussionSPCAtascosa, Bandera, Bastrop, Bell, Bexar, Blanco and 32 more88 min
Mar 8, 11:25 PM CSTTornado WatchSPCAnderson, Bastrop, Bell, Bexar, Blanco, Burnet and 31 more7 hr
Mar 8, 11:42 PM CSTTornado WatchSPCArcher, Baylor, Camp, Clay, Collin, Cooke and 17 more6 hr
Mar 9, 5:14 AM CSTMesoscale DiscussionSPCAngelina, Hardin, Harrison, Houston, Jasper, Jefferson and 14 more91 min

Nearby

Tornado Watches in Arkansas, 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; radar from the NEXRAD Level II archive.