Alert archive / Arkansas / Tornado Warnings in 1998

Tornado Warning 77, NWS Tulsa, OK

October 5, 1998Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Oct 5, 1998, 4:07 AM CDT for Benton County, Arkansas. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 5, 1998, 4:07 AM CDT (09:07 UTC)
Expired
Oct 5, 1998, 4:30 AM CDT
In force
23 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Benton County, AR

The radar

The Tulsa radar (KINX), 104 km from the middle of the area, began a volume at 09:09 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 4, 11:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 9.1 hours before the alert went out and 81 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 1998-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1811 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, Springfield, MO at 00:00Z on 1998-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 236 square meters per square second.193958Sfc1 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
1811 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
918 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
236 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
2.7
Supercell composite
19.4

Open this sounding in Storm Lab

The text

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

578 
WFUS54 KTSA 050909 RRA
TORTUL
ARC007-050930-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
407 AM CDT MON OCT 5 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR
     WESTERN BENTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 430 AM CDT

* AT 407 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG  
ROTATION NEAR GENTRY...MOVING EAST AT 40 MILES PER HOUR.  THIS 
DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  
GENTRY...BELLA VISTA...HIWASSE...CENTERTON...DECATUR 
...GRAVETTE...MAYSVILLE AND BENTONVILLE

THIS IS A DANGEROUS STORM. IF YOU ARE IN OR NEAR ITS PATH YOU SHOULD
PREPARE FOR LARGE HAIL...DAMAGING WINDS AND POSSIBLY A TORNADO. IF NO
UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN AN
INTERIOR ROOM AWAY FROM WINDOWS.

IF YOU ARE IN OR NEAR THE PATH OF THIS TORNADO...TAKE COVER NOW IF
NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

LAT...LON 3641 9458 3625 9456 3633 9420 3650 9424

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at Oct 5, 3:55 AM CDT, 12 minutes earlier.

Area forecast discussion, Oct 5, 3:55 AM CDT, 12 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1010 AM CDT MON OCT 5 1998

HEAVY RAIN HAS SHIFTED SOUTHEAST AND IS STILL MAKING PROGRESS
EASTWARD. HOWEVER BIG PIECE OF ENERGY STILL TO ROUND BASE OF
UPPER TROF AND MOVE ACROSS SOUTHERN PLAINS THIS AFTERNOON AND
TONIGHT. SURFACE COLD FRONT WAS EXTENDED FROM NEAR MIAMI TO
OKEMAH BUT 850 MB TROF IS STILL NORTHWEST OF THE FORECAST
AREA. SCATTERED SHOWERS WILL CONTINUE TO DEVELOP AND MOVE
NORTHEAST OVER NORTHEAST OKLAHOMA WITH MAIN AREAS OF
THUNDERSTORMS AND HEAVY RAINS SOUTHEAST OF CURRENT POSITION
OF SURFACE COLD FRONT. DUE TO CURRENT RUNOFF AND FLASH FLOOD
WARNINGS IN EFFECT WON'T CANCEL  ANY OF THE FFA AT THIS
TIME...BUT THREAT WILL HAVE SHIFTED INTO SOUTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS THIS AFTERNOON...SO PLAN ON SHAVING
OFF NORTHWEST PART OF WATCH EARLY THIS AFTERNOON.

WILL UPDATE ZONES TO LOWER MAXES BEHIND COLD FRONT WHERE CLOUDS
SCATTERED SHOWERS WILL KEEP TEMPERATURES FROM RISING MUCH.
TEMPERATURES SHOULD BE STEADY OR FALL WITH PRECIP OVER THE
REST OF THE AREA...EXCEPT NEAR RED RIVER WHERE SUNSHINE
COULD LET TEMPS WARM INTO MID 80S. THREAT FOR SEVERE SHOULD
BE LIMITED TO THAT AREA...BUT WILL HAVE TO MONITOR LEADING
EDGE OF STORMS FOR POSSIBLE INTENSIFICATION. UPDATED ZONES
SHOULD BE OUT BY 11AM.

.TUL...
OK...FLASH FLOOD WATCH FOR TODAY FOR ZONES OKZ049...OKZ053>077.

AR...FLASH FLOOD WATCH FOR TODAY FOR ZONES $ARZ001>002...ARZ010>011...
ARZ019>020...ARZ029.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 5, 2:12 AM CDTSevere Thunderstorm WarningTSABenton48 min
Oct 5, 2:56 AM CDTSevere Thunderstorm WarningTSABenton49 min
Oct 5, 3:56 AM CDTSevere Thunderstorm WarningTSABenton49 min
Oct 5, 4:35 AM CDTFlash Flood WarningTSABenton3 hr
Oct 5, 7:55 AM CDTFlash Flood WarningTSABenton3 hr
Oct 5, 10:53 AM CDTFlash Flood WarningTSABenton, Washington3 hr
Oct 5, 1:49 PM CDTFlash Flood WarningTSABenton, Washington3 hr
Oct 5, 2:13 PM CDTSevere Thunderstorm WarningTSACrawford32 min
Oct 5, 2:24 PM CDTSevere Thunderstorm WarningTSAMadison, Washington66 min
Oct 5, 3:15 PM CDTFlash Flood WarningTSACarroll, Madison3 hr
Oct 5, 3:15 PM CDTFlash Flood WarningTSAFranklin, Sebastian3 hr
Oct 5, 3:24 PM CDTSevere Thunderstorm WarningTSACarroll, Madison51 min

Nearby

Tornado Warnings in Arkansas, 1998Every tornado warning in 1998Tornadoes 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.