Alert archive / Arkansas / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 35, NWS Tulsa, OK

April 11, 1992Benton County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 11, 1992, 8:47 PM CDT for Benton County, Arkansas. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Apr 11, 1992, 8:47 PM CDT (01:47 UTC)
Expired
Apr 11, 1992, 9:45 PM CDT
In force
58 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Benton County, AR

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 1.8 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1992-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 650 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, Springfield, MO at 00:00Z on 1992-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
650 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1775 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
108 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 120149
SVRFSM
ARC007-120245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
847 PM CDT SAT APR 11 1992
 
THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST ARKANSAS
 
   ...SOUTHWESTERN BENTON COUNTY
 
AT 845 PM WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM NEAR
SILOAM SPRINGS. THE THUNDERSTORM IS PRODUCING HAIL AND IS MOVING SOUTH
SOUTHEAST AT 10 MPH.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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

Special weather statement, Apr 11, 4:55 PM CDT, 3 hours 52 minutes before
OKZ026>029-112300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
455 PM CDT SAT APR 11 1992

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM FOR MUCH OF
NORTHEAST OKLAHOMA...

AT 450 PM NATIONAL WEATHER SERVICE RADAR AT TULSA SHOWED A VERY STRONG
THUNDERSTORM DEVELOPING RAPIDLY IN NORTHERN OSAGE COUNTY OVER THE HULAH
RESERVOIR. THIS THUNDERSTORM WAS SHOWING VERY LITTLE MOVEMENT AT THE
PRESENT TIME. SMALL HAIL AND GUSTY WINDS ARE POSSIBLE WITH THIS STORM
ALONG WITH VERY HEAVY RAINFALL.

OTHER STRONG TO SEVERE THUNDERSTORMS WERE OVER SOUTHEAST KANSAS. THE
INDIVIDUAL THUNDERSTORMS WERE SHOWING LITTLE MOVEMENT BUT AS EACH
INDIVIDUAL STORM BEGINS TO WEAKEN...NEW STORMS DEVELOP FURTHER SOUTH SO
THE NET MOVEMENT OF THE KANSAS THUNDERSTORMS WERE TO THE SOUTH AT
AROUND 25 MILES AN HOUR. THESE THUNDERSTORMS SHOULD DEVELOP SOUTH INTO
NORTHEAST OKLAHOMA BEFORE 6 PM THIS EVENING.

ALL PERSONS IN NORTHEAST OKLAHOMA SHOULD KEEP ABREAST OF THE LATEST
WEATHER DEVELOPMENTS THIS EVENING AND BE PREPARED TO SEEK SAFE INDOOR
SHELTER IF THREATENING WEATHER APPROACHES.

STAY TUNED TO THIS STATION FOR THE LATEST WEATHER INFORMATION FROM THE
NATIONAL WEATHER SERVICE.

Nearby

Severe Thunderstorm Warnings in Arkansas, 1992Every severe thunderstorm warning in 1992

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.