Alert archive / Arkansas / Tornado Watches in 2001

Tornado Watch 824

November 26, 200117 counties in Arkansas; 14 parishes in Louisiana; 8 counties in Texas

The Storm Prediction Center issued this tornado watch at Nov 26, 2001, 1:00 PM CST for 17 counties in Arkansas; 14 parishes in Louisiana; 8 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Nov 26, 2001, 1:00 PM CST (19:00 UTC)
Expired: Nov 26, 2001, 6:00 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 39 counties

Ashley County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Hempstead County, AR, Lafayette County, AR, Lincoln County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Cass County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 43 km from the middle of the area, began a volume at 18:59 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

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

Issued	Product	Office	Counties	Lasted
Nov 26, 2:26 PM CST	Severe Thunderstorm Warning	SHV	De Soto	49 min
Nov 26, 2:35 PM CST	Tornado Warning	SHV	De Soto	40 min
Nov 26, 4:14 PM CST	Severe Thunderstorm Warning	SHV	Lafayette	61 min
Nov 26, 4:17 PM CST	Tornado Warning	LZK	Clark	28 min
Nov 26, 4:23 PM CST	Tornado Warning	SHV	Union	67 min
Nov 26, 4:26 PM CST	Tornado Warning	SHV	Bienville	64 min
Nov 26, 4:28 PM CST	Severe Thunderstorm Warning	LZK	Dallas	32 min
Nov 26, 4:42 PM CST	Tornado Warning	LZK	Ouachita	33 min
Nov 26, 4:43 PM CST	Tornado Warning	SHV	Lincoln	62 min
Nov 26, 4:43 PM CST	Tornado Warning	SHV	Webster	32 min
Nov 26, 4:45 PM CST	Tornado Warning	LZK	Calhoun	45 min
Nov 26, 4:55 PM CST	Tornado Warning	SHV	Union	35 min
Nov 26, 5:05 PM CST	Tornado Warning	SHV	Claiborne	55 min
Nov 26, 5:23 PM CST	Tornado Warning	LZK	Bradley	37 min
Nov 26, 5:27 PM CST	Severe Thunderstorm Warning	SHV	Jackson	63 min
Nov 26, 5:29 PM CST	Severe Thunderstorm Warning	LZK	Cleveland, Jefferson	46 min
Nov 26, 5:58 PM CST	Tornado Warning	LZK	Cleveland	32 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 7.0 hours before the alert went out and 35 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: 31 J/kg
Mixed-layer CIN: -250 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 297 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 261849
SEL4  
SPC WW 261842
ARZ000-LAZ000-TXZ000-270000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 824
STORM PREDICTION CENTER NORMAN OK
1242 PM CST MON NOV 26 2001

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

   SOUTHERN ARKANSAS                           
   NORTHERN LOUISIANA                          
   NORTHEAST TEXAS                              

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 100 PM UNTIL 600
PM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 95 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES SOUTH OF SHREVEPORT LOUISIANA TO 75 MILES
NORTH NORTHEAST OF EL DORADO ARKANSAS.

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.


DISCUSSION...SURFACE DRYLINE EXTENDS SWWD ACROSS NERN AND CENTRAL
TX MOVING EWD INTO SWRN AR/NWRN LA.  AIR MASS IS EXPECTED TO
DESTABILZE RAPIDLY WITHIN THE NEXT HOUR OR SO AS WEAK WARM FRONTAL
BOUNDARY ACROSS SRN SECTIONS OF CENTRAL LA MOVES NWD. PROFILERS
SHOW FAVORABLE VERTICAL SHEAR ACROSS THE AREA AND AS AIR MASS
DESTABILZES...WILL SEE RAPID DEVELOPMENT OF SUPERCELLS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 80 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 23035.


...MCCARTHY

314,0951 341,0934 341,0904 314,0922

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 26, 5:00 PM CST	Tornado Watch	SPC	Baxter, Clay, Cleburne, Conway, Craighead, Crittenden and 27 more	6 hr
Nov 26, 2:30 PM CST	Tornado Watch	SPC	Allen, Beauregard, Calcasieu, Grant, LaSalle, Rapides and 2 more	6 hr
Nov 26, 3:30 PM CST	Tornado Watch	SPC	Catahoula, Concordia, East Carroll, Franklin, Madison, Tensas	5 hr

Nearby

Tornado Watches in Arkansas, 2001 Tornado Watches in Louisiana, 2001 Tornado Watches in Texas, 2001 Every tornado watch in 2001

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.