Alert archive / Arkansas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 201, NWS Tulsa, OK

June 21, 1990Benton County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 21, 1990, 9:54 PM CDT for Benton County, Arkansas. It was in force for 66 min.

The area

The counties it named.

The facts

Issued: Jun 21, 1990, 9:54 PM CDT (02:54 UTC)
Expired: Jun 21, 1990, 11:00 PM CDT
In force: 66 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Benton County, AR

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 2.9 hours before the alert went out and 74 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 90 J/kg
Mixed-layer CIN: -229 J/kg
Mixed-layer LCL: 1597 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 329 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 
TTAA00 KFSM 220255
SVRFSM
ARC007-OKC135-220400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
954 PM CDT THU JUN 21 1990
 
THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST ARKANSAS
 
   ...BENTON COUNTY
 
 
IN NORTHEAST OKLAHOMA
 
   ...SEQUOYAH COUNTY
 
AT 955 PM WEATHER RADAR INDICATED SEVERE THUNDERSTORMS ON THE STATE
LINE SOUTHWEST OF GRAVETTE ARKANSAS AND IN THE NORTHWEST CORNER OF
SEQUOYAH COUNTY OKLAHOMA. THESE STORMS ARE MOVING EAST AT 40 MPH. THE
MAIN THREAT WILL BE DAMAGING WIND. LARGE HAIL IS ALSO POSSIBLE WITH
THESE STORMS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROAQDS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

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

In the hours before

Local storm report, Jun 21, 5:43 PM CDT, 4 hours 11 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
530 PM CDT THU JUN 21 1990

TIME/CDT     COUNTY      EVENT

344 PM       NOWATA      TORNADO TOUCHED DOWN 10 MILES NORTHWEST OF
                         NOWATA.
410 PM       OSAGE       DIME SIZE HAIL AT FAIRFAX.
428 PM       CRAIG       TORNADO SOUTHEAST OF CENTRALIA.
450 PM       CRAIG       DIME SIZE HAIL AT WHITE OAK.
503 PM       CRAIG       60 MILE AN HOUR AT WELCH.
420 PM       CRAIG       LOAD BLOWN OFF SEMI-TRUCK 3 MILES EAST OF
                         VINITA.
537          MAYES       GOLFBALL SIZE HAIL AT LANGLEY.

Local storm report, Jun 21, 5:44 PM CDT, 4 hours 10 minutes before

STORM REPORT CORRECTED
NATIONAL WEATHER SERVICE TULSA, OK
545 PM CDT THU JUN 21 1990

TIME/CDT     COUNTY      EVENT

344 PM       NOWATA      TORNADO TOUCHED DOWN 10 MILES NORTHWEST OF
                         NOWATA.
410 PM       OSAGE       DIME SIZE HAIL AT FAIRFAX.
428 PM       CRAIG       TORNADO SOUTHEAST OF CENTRALIA.
450 PM       CRAIG       DIME SIZE HAIL AT WHITE OAK.
503 PM       CRAIG       60 MILE AN HOUR AT WELCH.
420 PM       CRAIG       LOAD BLOWN OFF SEMI-TRUCK 3 MILES EAST OF
                         VINITA.
537          MAYES       GOLFBALL SIZE HAIL AT LANGLEY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:05 PM CDT	Tornado Warning	TSA	Washington	25 min
Jun 21, 7:20 PM CDT	Severe Thunderstorm Warning	TSA	Madison	55 min
Jun 21, 7:43 PM CDT	Tornado Warning	TSA	Madison, Washington	36 min
Jun 21, 10:10 PM CDT	Severe Thunderstorm Warning	TSA	Washington	65 min
Jun 21, 10:31 PM CDT	Severe Thunderstorm Warning	TSA	Crawford	59 min
Jun 21, 10:46 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	59 min
Jun 21, 11:18 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	57 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1990 Every severe thunderstorm warning in 1990

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.