Alert archive / Oklahoma / Tornado Watches in 2004

Tornado Watch 104

April 22, 200418 counties in Arkansas; 7 counties in Missouri; 39 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Apr 22, 2004, 1:40 PM CDT for 18 counties in Arkansas; 7 counties in Missouri; 39 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 2004, 1:40 PM CDT (18:40 UTC)
Expired
Apr 22, 2004, 8:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 64 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Howard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Montgomery County, AR, Newton County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Barry County, MO, Christian County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 107 km from the middle of the area, began a volume at 18:40 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

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

IssuedProductOfficeCountiesLasted
Apr 22, 3:29 PM CDTSevere Thunderstorm WarningTSATulsa, Wagoner76 min
Apr 22, 3:50 PM CDTSevere Thunderstorm WarningTSARogers70 min
Apr 22, 3:53 PM CDTTornado WarningTSAWagoner37 min
Apr 22, 3:56 PM CDTTornado WarningTSARogers64 min
Apr 22, 4:20 PM CDTTornado WarningTSATulsa55 min
Apr 22, 4:27 PM CDTTornado WarningTSAMayes63 min
Apr 22, 4:34 PM CDTSevere Thunderstorm WarningTSAOkfuskee56 min
Apr 22, 4:36 PM CDTSevere Thunderstorm WarningTSAOkmulgee24 min
Apr 22, 4:42 PM CDTTornado WarningTSAWagoner63 min
Apr 22, 5:02 PM CDTSevere Thunderstorm WarningSGFBarry, Newton58 min
Apr 22, 5:03 PM CDTTornado WarningTSACherokee, Delaware72 min
Apr 22, 5:11 PM CDTTornado WarningTSAOkmulgee, Tulsa34 min
Apr 22, 5:23 PM CDTSevere Thunderstorm WarningOUNPottawatomie, Seminole67 min
Apr 22, 5:25 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee80 min
Apr 22, 5:26 PM CDTTornado WarningTSAMayes34 min
Apr 22, 5:30 PM CDTTornado WarningTSAMuskogee60 min
Apr 22, 5:32 PM CDTSevere Thunderstorm WarningOUNCarter, Jefferson, Love, Murray58 min
Apr 22, 5:40 PM CDTTornado WarningTSAWagoner65 min
Apr 22, 5:45 PM CDTTornado WarningTSAOkmulgee60 min
Apr 22, 5:48 PM CDTTornado WarningTSAAdair57 min
Apr 22, 5:54 PM CDTSevere Thunderstorm WarningTSAOkfuskee51 min
Apr 22, 5:58 PM CDTSevere Thunderstorm WarningSGFLawrence32 min
Apr 22, 6:05 PM CDTSevere Thunderstorm WarningTSACraig55 min
Apr 22, 6:13 PM CDTSevere Thunderstorm WarningSGFChristian47 min
Apr 22, 6:17 PM CDTTornado WarningSGFBarry, Stone58 min
Apr 22, 6:22 PM CDTSevere Thunderstorm WarningTSAWashington68 min
Apr 22, 6:26 PM CDTTornado WarningTSAMuskogee64 min
Apr 22, 6:31 PM CDTSevere Thunderstorm WarningSGFNewton14 min
Apr 22, 6:31 PM CDTSevere Thunderstorm WarningOUNGarvin, Seminole44 min
Apr 22, 6:31 PM CDTSevere Thunderstorm WarningTSACherokee59 min
Apr 22, 6:36 PM CDTTornado WarningTSACherokee54 min
Apr 22, 6:41 PM CDTSevere Thunderstorm WarningTSAWagoner64 min
Apr 22, 6:41 PM CDTSevere Thunderstorm WarningTSAOkmulgee79 min
Apr 22, 6:45 PM CDTTornado WarningTSAAdair60 min
Apr 22, 6:46 PM CDTTornado WarningTSAWashington59 min
Apr 22, 6:51 PM CDTTornado WarningTSACraig, Ottawa54 min
Apr 22, 6:55 PM CDTSevere Thunderstorm WarningTSAMcIntosh95 min
Apr 22, 6:56 PM CDTFlash Flood WarningTSAAdair, Cherokee, Muskogee, Okmulgee, Wagoner4 hr
Apr 22, 7:00 PM CDTSevere Thunderstorm WarningOUNHughes45 min
Apr 22, 7:10 PM CDTTornado WarningSGFChristian65 min
Apr 22, 7:14 PM CDTTornado WarningSGFStone31 min
Apr 22, 7:18 PM CDTSevere Thunderstorm WarningSGFBarry57 min
Apr 22, 7:26 PM CDTTornado WarningTSACherokee, Muskogee64 min
Apr 22, 7:29 PM CDTTornado WarningSGFTaney61 min
Apr 22, 7:35 PM CDTFlash Flood WarningTSAWashington3 hr
Apr 22, 7:42 PM CDTTornado WarningTSAWashington63 min
Apr 22, 7:47 PM CDTSevere Thunderstorm WarningTSAAdair58 min
Apr 22, 7:52 PM CDTTornado WarningSGFBarry, Stone53 min
Apr 22, 7:59 PM CDTTornado WarningSGFMcDonald61 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

Norman, OK (KOUN), launched 12:00Z, 6.7 hours before the alert went out and 165 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, Norman, OK at 12:00Z on 2004-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 900 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, Norman, OK at 12:00Z on 2004-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 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
900 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
473 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

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

581 
WWUS20 KWNS 221850
SEL4  
SPC WW 221840
ARZ000-MOZ000-OKZ000-230100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 104
NWS STORM PREDICTION CENTER NORMAN OK
140 PM CDT THU APR 22 2004

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

       WESTERN ARKANSAS
       SOUTHWEST MISSOURI
       EASTERN OKLAHOMA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
800 PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS ALONG AND 110 STATUTE MILES EAST AND
WEST OF A LINE FROM 40 MILES WEST NORTHWEST OF MONETT MISSOURI TO
45 MILES EAST OF DURANT OKLAHOMA.

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...BOUNDARY LAYER CONTINUES TO DESTABILIZE WITH HEATING
NEAR/EAST OF SURFACE LOW/INVERTED SURFACE TROUGH EXTENDING FROM EAST
CENTRAL OKLAHOMA INTO SOUTHWEST MISSOURI.  LOW-LEVEL WARM ADVECTION
IS PROVIDING SUPPORT FOR LARGE-SCALE UPWARD VERTICAL MOTION...AND
WILL CONTRIBUTE TO INTENSE CONVECTIVE DEVELOPMENT IN ENVIRONMENT
WITH MEAN MIXED LAYER CAPE UP TO 2000 J/KG.  WITH MID-LEVEL CAP SLOW
TO WEAKEN...DISCRETE SUPERCELLS ARE LIKELY FOR SEVERAL
HOURS...ENHANCED BY DIFLUENT/DIVERGENT UPPER FLOW...BEFORE STORMS
INCREASE IN COVERAGE TOWARD EARLY EVENING.  VERY LARGE HAIL/DAMAGING
WIND GUSTS ARE LIKELY...WITH ISOLATED TORNADOES ALSO POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26020.


...KERR

370,0923 335,0934 335,0973 370,0963

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 21, 7:01 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more119 min
Apr 21, 8:12 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Baxter, Benton, Boone, Bradley and 52 more63 min
Apr 21, 10:10 PM CDTMesoscale DiscussionSPCBenton, Washington95 min
Apr 21, 10:50 PM CDTSevere Thunderstorm WatchSPCCrawford, Sebastian5 hr
Apr 22, 1:43 AM CDTMesoscale DiscussionSPCCrawford, Logan, Sebastian92 min
Apr 22, 12:32 PM CDTMesoscale DiscussionSPCBenton, Washington88 min
Apr 22, 3:26 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Johnson, Logan, Madison, Newton and 6 more64 min
Apr 22, 5:27 PM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Howard and 12 more63 min
Apr 22, 6:23 PM CDTMesoscale DiscussionSPCBoone, Carroll, Crawford, Franklin, Howard, Johnson and 11 more67 min
Apr 21, 7:06 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Blaine, Dewey, Ellis, Harper and 3 more2 hr
Apr 21, 7:51 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Choctaw, Cleveland, Creek, Delaware and 18 more84 min
Apr 21, 8:35 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Dewey, Ellis, Garfield, Grant and 9 more5 hr
Apr 21, 8:35 PM CDTTornado WatchSPCAtoka, Bryan, Choctaw, Coal, Haskell, Hughes and 6 more5 hr
Apr 21, 10:26 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Haskell, Hughes and 7 more64 min
Apr 21, 10:56 PM CDTMesoscale DiscussionSPCAlfalfa, Garfield, Grant, Kay, Kingfisher, Logan and 2 more94 min
Apr 22, 4:30 PM CDTTornado WatchSPCBryan, Love6 hr

Nearby

Tornado Watches in Oklahoma, 2004Tornado Watches in Arkansas, 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.