Alert archive / Arkansas / Tornado Watches in 1998

Tornado Watch 294

May 6, 19984 states

The Storm Prediction Center issued this tornado watch at May 6, 1998, 4:00 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 6, 1998, 4:00 PM CDT (21:00 UTC)
Expired
May 6, 1998, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 69 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crawford County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Mississippi County, AR, Newton County, AR, Poinsett County, AR, Pope County, AR, Randolph County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Barry County, MO, Butler County, MO, Carter County, MO, Christian County, MO, Douglas County, MO, Dunklin County, MO, Greene County, MO, Howell County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Mississippi County, MO, New Madrid County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Wayne County, MO, Webster County, MO, Wright County, MO, Dyer County, TN, Fayette County, TN, Lake County, TN, Lauderdale County, TN, Shelby County, TN, Tipton County, TN

The radar

The Springfield radar (KSGF), 128 km from the middle of the area, began a volume at 21:04 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
May 6, 4:30 PM CDTSevere Thunderstorm WarningLZKBaxter20 min
May 6, 4:32 PM CDTSevere Thunderstorm WarningSGFOzark48 min
May 6, 4:49 PM CDTSevere Thunderstorm WarningSGFHowell66 min
May 6, 5:14 PM CDTSevere Thunderstorm WarningSGFJasper66 min
May 6, 6:38 PM CDTSevere Thunderstorm WarningSGFBarry, Christian, Lawrence, Stone62 min
May 6, 6:43 PM CDTSevere Thunderstorm WarningSGFMcDonald, Newton62 min
May 6, 6:48 PM CDTSevere Thunderstorm WarningSGFDouglas, Ozark, Taney62 min
May 6, 6:52 PM CDTSevere Thunderstorm WarningSGFWebster, Wright63 min
May 6, 6:52 PM CDTSevere Thunderstorm WarningSGFGreene63 min
May 6, 7:01 PM CDTSevere Thunderstorm WarningTSACrawford, Washington59 min
May 6, 7:34 PM CDTTornado WarningTSACrawford56 min
May 6, 7:36 PM CDTFlash Flood WarningSGFBarry, Stone, Taney6 hr
May 6, 7:36 PM CDTFlash Flood WarningSGFMcDonald6 hr
May 6, 7:43 PM CDTTornado WarningTSAFranklin62 min
May 6, 7:45 PM CDTSevere Thunderstorm WarningSGFChristian, Taney50 min
May 6, 7:52 PM CDTSevere Thunderstorm WarningTSAMadison38 min
May 6, 7:52 PM CDTSevere Thunderstorm WarningSGFDouglas, Ozark33 min
May 6, 8:01 PM CDTTornado WarningTSAWashington44 min
May 6, 8:15 PM CDTTornado WarningTSACrawford45 min
May 6, 8:18 PM CDTTornado WarningSGFOzark37 min
May 6, 8:25 PM CDTSevere Thunderstorm WarningTSACarroll, Madison50 min
May 6, 8:40 PM CDTSevere Thunderstorm WarningTSASebastian65 min
May 6, 8:45 PM CDTSevere Thunderstorm WarningTSACrawford, Franklin45 min
May 6, 8:52 PM CDTTornado WarningTSASebastian38 min
May 6, 8:55 PM CDTSevere Thunderstorm WarningSGFHowell, Ozark65 min
May 6, 8:57 PM CDTSevere Thunderstorm WarningLZKBoone48 min
May 6, 9:03 PM CDTSevere Thunderstorm WarningLZKMarion47 min
May 6, 9:08 PM CDTSevere Thunderstorm WarningMEGClay47 min
May 6, 9:19 PM CDTSevere Thunderstorm WarningLZKJohnson46 min
May 6, 9:20 PM CDTSevere Thunderstorm WarningLZKBaxter50 min
May 6, 9:25 PM CDTSevere Thunderstorm WarningMEGGreene20 min
May 6, 9:30 PM CDTSevere Thunderstorm WarningLZKFulton65 min
May 6, 9:46 PM CDTTornado WarningLZKFulton49 min
May 6, 9:47 PM CDTSevere Thunderstorm WarningTSACrawford43 min
May 6, 9:49 PM CDTSevere Thunderstorm WarningMEGLawrence, Randolph36 min
May 6, 9:56 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan, Pope64 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.0 hours before the alert went out and 282 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 12:00Z on 1998-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1098 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, Little Rock, AR at 12:00Z on 1998-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.19395878Sfc1 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
1098 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
-32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

278 
WWUS9 KMKC 062033
SEL4  
MKC WW 062033
TNZ000-ARZ000-MOZ000-070300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 294
STORM PREDICTION CENTER NORMAN OK
333 PM CDT WED MAY 6 1998

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

   WESTERN TENNESSEE                          
   NORTHERN ARKANSAS                           
   SOUTHERN MISSOURI                           

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 400 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EITHER SIDE OF
A LINE FROM 25 MILES NORTHWEST OF FAYETTEVILLE ARKANSAS TO 10 MILES
NORTHEAST OF DYERSBURG TENNESSEE.

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 292...WW 293...

DISCUSSION...THUNDERSTORMS SHOULD RAPIDLY INCREASE ACROSS THE AREA
AS HEATING HAS ERODED THE CAPPING INVERSION. SHEAR PROFILES ARE
SUPPORTIVE OF SUPERCELLS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 27025.


...VESCIO

372,0942 371,0891 350,0891 351,0943

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 6, 3:30 AM CDTSevere Thunderstorm WatchSPCClay, Cleburne, Conway, Craighead, Crawford, Crittenden and 39 more6 hr
May 6, 5:30 PM CDTTornado WatchSPCBarton, Bates, Benton, Callaway, Camden, Cass and 32 more6 hr

Nearby

Tornado Watches in Arkansas, 1998Tornado Watches in Missouri, 1998Tornado Watches in Tennessee, 1998Every tornado watch in 1998

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.