Alert archive / Arkansas / Tornado Watches in 2004

Tornado Watch 106

April 22, 200416 counties in Arkansas; 7 counties in Missouri; 8 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Apr 22, 2004, 7:50 PM CDT for 16 counties in Arkansas; 7 counties in Missouri; 8 counties in Oklahoma. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 2004, 7:50 PM CDT (00:50 UTC)
Expired
Apr 23, 2004, 12:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 31 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Howell County, MO, McDonald County, MO, Oregon County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, McIntosh County, OK, Muskogee County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 64 km from the middle of the area, began a volume at 00:54 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

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

IssuedProductOfficeCountiesLasted
Apr 22, 7:52 PM CDTTornado WarningSGFBarry, Stone53 min
Apr 22, 7:59 PM CDTTornado WarningSGFMcDonald61 min
Apr 22, 8:23 PM CDTTornado WarningTSACherokee52 min
Apr 22, 8:25 PM CDTTornado WarningSGFOzark65 min
Apr 22, 8:35 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg55 min
Apr 22, 8:54 PM CDTSevere Thunderstorm WarningTSAMadison66 min
Apr 22, 9:04 PM CDTSevere Thunderstorm WarningTSAWashington56 min
Apr 22, 9:19 PM CDTSevere Thunderstorm WarningLZKPope41 min
Apr 22, 9:26 PM CDTSevere Thunderstorm WarningSGFHowell79 min
Apr 22, 9:29 PM CDTSevere Thunderstorm WarningSGFOzark46 min
Apr 22, 9:30 PM CDTSevere Thunderstorm WarningTSAHaskell, McIntosh, Pittsburg75 min
Apr 22, 9:33 PM CDTSevere Thunderstorm WarningTSAFranklin42 min
Apr 22, 9:47 PM CDTSevere Thunderstorm WarningTSACrawford13 min
Apr 22, 9:50 PM CDTSevere Thunderstorm WarningTSACrawford25 min
Apr 22, 9:51 PM CDTSevere Thunderstorm WarningTSACrawford24 min
Apr 22, 9:56 PM CDTSevere Thunderstorm WarningLZKJohnson39 min
Apr 22, 9:56 PM CDTSevere Thunderstorm WarningTSAMadison64 min
Apr 22, 10:06 PM CDTSevere Thunderstorm WarningLZKPope14 min
Apr 22, 10:08 PM CDTSevere Thunderstorm WarningLZKNewton52 min
Apr 22, 10:11 PM CDTSevere Thunderstorm WarningTSAFranklin64 min
Apr 22, 10:25 PM CDTTornado WarningLZKJohnson40 min
Apr 22, 10:25 PM CDTSevere Thunderstorm WarningTSASebastian65 min
Apr 22, 10:42 PM CDTSevere Thunderstorm WarningLZKBaxter43 min
Apr 22, 10:47 PM CDTSevere Thunderstorm WarningLZKMarion58 min
Apr 22, 10:50 PM CDTSevere Thunderstorm WarningSGFOregon55 min
Apr 22, 10:53 PM CDTSevere Thunderstorm WarningTSAMcIntosh67 min
Apr 22, 10:59 PM CDTFlash Flood WarningLZKBoone3 hr
Apr 22, 11:01 PM CDTSevere Thunderstorm WarningLZKSearcy49 min
Apr 22, 11:06 PM CDTTornado WarningLZKJohnson34 min
Apr 22, 11:15 PM CDTFlash Flood WarningLZKBaxter, Johnson, Marion, Newton3 hr
Apr 22, 11:16 PM CDTSevere Thunderstorm WarningTSAFranklin59 min
Apr 22, 11:24 PM CDTFlash Flood WarningTSAFranklin, Madison5 hr
Apr 22, 11:27 PM CDTSevere Thunderstorm WarningLZKPope43 min
Apr 22, 11:31 PM CDTFlash Flood WarningLZKFulton3 hr
Apr 22, 11:46 PM CDTSevere Thunderstorm WarningSGFOregon59 min
Apr 22, 11:51 PM CDTSevere Thunderstorm WarningLZKSearcy39 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

Springfield, MO (KSGF), launched 00:00Z, 0.8 hours before the alert went out and 125 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, Springfield, MO at 00:00Z on 2004-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 112 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, Springfield, MO at 00:00Z on 2004-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 336 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
112 J/kg
Mixed-layer CIN
-140 J/kg
Mixed-layer LCL
785 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
336 m²/s²
0-3 km storm-relative helicity
543 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.1

Open this sounding in Storm Lab

The text

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

637 
WWUS20 KWNS 230059
SEL6  
SPC WW 230050
ARZ000-MOZ000-OKZ000-230500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 106
NWS STORM PREDICTION CENTER NORMAN OK
750 PM CDT THU APR 22 2004

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

       NORTHWEST AND NORTH CENTRAL ARKANSAS
       FAR SOUTHWEST AND SOUTH CENTRAL MISSOURI
       EAST CENTRAL OKLAHOMA

EFFECTIVE THIS THURSDAY NIGHT FROM 750 PM UNTIL MIDNIGHT CDT.

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 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES WEST SOUTHWEST OF FORT SMITH ARKANSAS TO
45 MILES NORTH NORTHEAST OF HARRISON 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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 104. WATCH NUMBER 104 WILL NOT BE IN EFFECT AFTER 750
PM CDT. CONTINUE...WW 105...

DISCUSSION...SEVERAL SUPERCELLS WITH STRONG LOW LEVEL ROTATION
CONTINUE ATTM NEAR AND JUST NORTH OF SURFACE COLD FRONT EXTENDING
E-W NEAR THE MO/AR BORDER SWWD INTO E-CENTRAL OK...AND ALONG OUTFLOW
BOUNDARY EXTENDING INTO NWRN AR.  THOUGH COOLING BOUNDARY LAYER WILL
INCREASE INHIBITION TO SURFACE-BASED PARCELS THROUGH THE
EVENING...COMBINATION OF SUFFICIENT SHEAR AND INSTABILITY WILL
REMAIN FAVORABLE FOR SUPERCELLS WITH ATTENDANT THREAT OF ISOLATED
TORNADOES NEAR THE BOUNDARIES FOR A FEW MORE HOURS AS SLY LLJ
INCREASES.

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 450.
MEAN STORM MOTION VECTOR 26015.


...EVANS

351,0962 365,0943 365,0910 351,0930

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 22, 7:10 PM CDTMesoscale DiscussionSPCBoone, Franklin, Howard, Johnson, Logan, Madison and 5 more35 min
Apr 22, 9:50 PM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more6 hr
Apr 22, 10:52 PM CDTMesoscale DiscussionSPCConway, Pope, Searcy, Stone, Van Buren53 min
Apr 22, 11:25 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more65 min
Apr 22, 11:40 PM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more6 hr
Apr 23, 12:54 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more96 min
Apr 23, 3:12 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 5 more93 min
Apr 23, 7:33 AM CDTMesoscale DiscussionSPCCraighead, Crittenden, Cross, Jackson, Lee, Poinsett and 2 more87 min
Apr 23, 10:37 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Fulton, Izard and 3 more113 min
Apr 23, 2:10 PM CDTSevere Thunderstorm WatchSPCBenton, Crawford, Sebastian, Washington6 hr
Apr 23, 6:01 PM CDTMesoscale DiscussionSPCCrawford, Scott, Sebastian59 min
Apr 23, 12:51 PM CDTMesoscale DiscussionSPCBarton, Bates, Benton, Camden, Cedar, Dade and 12 more114 min
Apr 23, 3:05 PM CDTSevere Thunderstorm WatchSPCBarry, Barton, Cedar, Dade, Greene, Hickory and 8 more5 hr
Apr 22, 8:00 PM CDTMesoscale DiscussionSPCLove60 min
Apr 22, 11:47 PM CDTMesoscale DiscussionSPCBeaver, Custer, Dewey, Ellis, Harper, Major and 3 more58 min
Apr 23, 10:10 AM CDTMesoscale DiscussionSPCBeaver, Beckham, Blaine, Custer, Dewey, Ellis and 11 more3 hr
Apr 23, 12:15 PM CDTTornado WatchSPCCarter, Cotton, Jefferson, Tillman6 hr
Apr 23, 1:46 PM CDTMesoscale DiscussionSPCAdair, Caddo, Canadian, Carter, Cherokee, Cleveland and 29 more119 min
Apr 23, 3:05 PM CDTMesoscale DiscussionSPCCotton, Garvin, Murray, Pontotoc, Stephens85 min
Apr 23, 4:40 PM CDTMesoscale DiscussionSPCCarter, Jefferson65 min
Apr 23, 5:30 PM CDTSevere Thunderstorm WatchSPCCarter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more7 hr

Nearby

Tornado Watches in Arkansas, 2004Tornado Watches in Oklahoma, 2004Tornado Watches in Missouri, 2004Every tornado watch in 2004

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.