Alert archive / Arkansas / Tornado Watches in 2001

Tornado Watch 813

November 23, 200153 counties in Arkansas; 14 counties in Missouri

The Storm Prediction Center issued this tornado watch at Nov 23, 2001, 11:00 PM CST for 53 counties in Arkansas; 14 counties in Missouri. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Nov 23, 2001, 11:00 PM CST (05:00 UTC)
Expired
Nov 24, 2001, 3:00 AM CST
In force
4 hr
Issued by
the Storm Prediction Center
All 67 counties

Arkansas County, AR, Ashley County, AR, Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lafayette County, AR, Lawrence County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Carter County, MO, Christian County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Reynolds County, MO, Ripley County, MO, Shannon County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO

The radar

The Little Rock radar (KLZK), 36 km from the middle of the area, began a volume at 05:03 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

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

IssuedProductOfficeCountiesLasted
Nov 23, 11:15 PM CSTTornado WarningLZKSearcy30 min
Nov 23, 11:20 PM CSTSevere Thunderstorm WarningLZKClark, Hot Spring60 min
Nov 23, 11:20 PM CSTSevere Thunderstorm WarningLZKGarland, Perry60 min
Nov 23, 11:23 PM CSTTornado WarningLZKMarion37 min
Nov 23, 11:33 PM CSTTornado WarningLZKBaxter42 min
Nov 23, 11:46 PM CSTSevere Thunderstorm WarningLZKConway, Van Buren44 min
Nov 24, 12:05 AM CSTSevere Thunderstorm WarningLZKFaulkner, Pulaski55 min
Nov 24, 12:05 AM CSTSevere Thunderstorm WarningLZKSaline55 min
Nov 24, 12:06 AM CSTSevere Thunderstorm WarningLZKBaxter24 min
Nov 24, 12:29 AM CSTSevere Thunderstorm WarningLZKCleburne, Van Buren46 min
Nov 24, 12:37 AM CSTSevere Thunderstorm WarningSGFHowell38 min
Nov 24, 12:49 AM CSTTornado WarningJANAshley41 min
Nov 24, 1:12 AM CSTTornado WarningLZKWhite48 min
Nov 24, 1:16 AM CSTTornado WarningJANChicot44 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.0 hours before the alert went out and 247 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, Little Rock, AR at 00:00Z on 2001-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 571 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2001-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 331 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
571 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
331 m²/s²
0-3 km storm-relative helicity
419 m²/s²
Significant tornado parameter
1.6
Supercell composite
6.1

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 240450
SEL3  
SPC WW 240445
ARZ000-MOZ000-240900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 813
STORM PREDICTION CENTER NORMAN OK
1045 PM CST FRI NOV 23 2001

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

   MUCH OF ARKANSAS                           
   SOUTHERN MISSOURI                           

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1100 PM UNTIL
300 AM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 15 MILES SOUTH SOUTHEAST OF EL DORADO ARKANSAS TO 50
MILES NORTH OF WEST PLAINS MISSOURI.

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...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 811...TORNADO WATCH NUMBER 812.  WATCH NUMBER 811...812 WILL
NOT BE IN EFFECT AFTER 1100 PM CST.

DISCUSSION...INTENSE SQUALL LINE AND ISOLATED SUPERCELLS AHEAD OF
LINE WILL CONTINUE TO TRACK EASTWARD ACROSS MUCH OF AR AND SOUTHERN
MO.  SHEAR PROFILES REMAIN FAVORABLE FOR ISOLATED TORNADOES...AS
WELL AS DAMAGING WINDS AND HAIL.  STORMS MAY BEGIN TO SLOWLY WEAKEN
BY 3AM CST AS ACTIVITY MOVES INTO MORE STABLE LOW LEVEL AIRMASS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24040.

...HART

372,0902 330,0912 330,0940 372,0931

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 23, 6:00 PM CSTTornado WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Hempstead and 17 more5 hr
Nov 24, 1:15 AM CSTTornado WatchSPCAshley, Chicot, Desha, Drew, Lee, Phillips6 hr
Nov 24, 2:30 AM CSTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 2 more5 hr
Nov 23, 7:30 PM CSTTornado WatchSPCBarry, Barton, Camden, Cedar, Christian, Dade and 21 more5 hr

Nearby

Tornado Watches in Arkansas, 2001Tornado Watches in Missouri, 2001Every 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.