Alert archive / Oklahoma / Tornado Watches in 2003

Tornado Watch 273

May 6, 20034 counties in Arkansas; 18 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at May 6, 2003, 3:05 PM CDT for 4 counties in Arkansas; 18 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2003, 3:05 PM CDT (20:05 UTC)
Expired
May 6, 2003, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 22 counties

Logan County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK

The radar

The Norman radar (KTLX), 158 km from the middle of the area, began a volume at 20:08 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

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

IssuedProductOfficeCountiesLasted
May 6, 3:18 PM CDTSevere Thunderstorm WarningOUNJohnston, Pontotoc42 min
May 6, 3:39 PM CDTSevere Thunderstorm WarningOUNHughes51 min
May 6, 3:50 PM CDTSevere Thunderstorm WarningTSAMcIntosh55 min
May 6, 4:00 PM CDTSevere Thunderstorm WarningOUNCoal, Johnston, Pontotoc45 min
May 6, 4:18 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg87 min
May 6, 4:26 PM CDTSevere Thunderstorm WarningOUNHughes49 min
May 6, 4:36 PM CDTSevere Thunderstorm WarningOUNLove39 min
May 6, 4:45 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston60 min
May 6, 5:39 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, Muskogee, Pittsburg81 min
May 6, 5:46 PM CDTSevere Thunderstorm WarningOUNAtoka59 min
May 6, 5:50 PM CDTSevere Thunderstorm WarningOUNLove25 min
May 6, 6:02 PM CDTSevere Thunderstorm WarningTSAPushmataha88 min
May 6, 6:19 PM CDTSevere Thunderstorm WarningOUNCoal26 min
May 6, 6:38 PM CDTSevere Thunderstorm WarningOUNMarshall52 min
May 6, 6:45 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston45 min
May 6, 6:48 PM CDTSevere Thunderstorm WarningTSALeFlore72 min
May 6, 7:07 PM CDTSevere Thunderstorm WarningTSASebastian53 min
May 6, 7:18 PM CDTSevere Thunderstorm WarningTSAPittsburg57 min
May 6, 7:28 PM CDTSevere Thunderstorm WarningTSALatimer, Pushmataha77 min
May 6, 7:52 PM CDTSevere Thunderstorm WarningTSASebastian38 min
May 6, 7:55 PM CDTSevere Thunderstorm WarningOUNAtoka50 min
May 6, 8:00 PM CDTSevere Thunderstorm WarningTSALeFlore75 min
May 6, 8:45 PM CDTSevere Thunderstorm WarningTSALatimer45 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, 8.1 hours before the alert went out and 160 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 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 236 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 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.1939587897117Sfc1 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
236 J/kg
Mixed-layer CIN
-453 J/kg
Mixed-layer LCL
2191 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 062003
SEL3  
SPC WW 062005
ARZ000-OKZ000-070200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 273 
NWS STORM PREDICTION CENTER NORMAN OK 
305 PM CDT TUE MAY 6 2003

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

       WEST CENTRAL ARKANSAS
       SOUTHEAST OKLAHOMA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 305 PM UNTIL 900
PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 90 STATUTE MILES EAST AND WEST
OF A LINE FROM 20 MILES WEST NORTHWEST OF FORT SMITH ARKANSAS TO
15 MILES SOUTHEAST 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.


OTHER WATCH INFORMATION...CONTINUE...WW 266...WW 268...WW 269...WW
270...WW 271...WW 272...


DISCUSSION...DRY LINE IS BECOMING MORE ACTIVE AND SHOULD QUICKLY
INITIATE SEVERE THUNDERSTORMS ACROSS SERN OK...AS CAP WEAKENS.	VERY
STRONG INSTABILITY AND SHEAR PARAMETERS WILL SUPPORT LONG-LIVED
SUPERCELLS WITH THE THREAT OF A FEW STRONG TORNADOES WELL INTO THE
EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 25025.


...EVANS

352,0930 334,0943 334,0974 352,0961

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 9:05 PM CDTTornado WatchSPCPhillips7 hr
May 5, 10:58 PM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Fulton, Marion2 hr
May 6, 1:26 AM CDTMesoscale DiscussionSPCCrittenden, Lee, St. Francis3 hr
May 6, 1:50 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 4 more6 hr
May 6, 5:06 AM CDTMesoscale DiscussionSPCCrittenden, Cross, Lee, Mississippi, Phillips, St. Francis3 hr
May 6, 10:32 AM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Sebastian, Washington118 min
May 6, 11:40 AM CDTTornado WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 4 more7 hr
May 6, 5:33 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Franklin, Fulton, Johnson and 6 more117 min
May 6, 6:55 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 32 more5 hr
May 6, 2:47 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Haskell, Latimer and 5 more118 min
May 6, 3:42 PM CDTMesoscale DiscussionSPCCraig, Delaware, Mayes, Nowata, Ottawa, Rogers and 1 more2 hr

Nearby

Tornado Watches in Oklahoma, 2003Tornado Watches in Arkansas, 2003Every tornado watch in 2003

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.