Alert archive / Arkansas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 9, NWS Little Rock, AR

February 20, 1997Johnson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Feb 20, 1997, 8:48 PM CST for Johnson County, Arkansas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 20, 1997, 8:48 PM CST (02:48 UTC)
Expired
Feb 20, 1997, 9:40 PM CST
In force
52 min
Issued by
NWS Little Rock, AR
Area
Whole counties

County Johnson County, AR

The watch it was issued in

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

IssuedProductOfficeLasted
Feb 20, 6:00 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.8 hours before the alert went out and 151 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 1997-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 267 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 1997-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 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
267 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
270 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Feb 20, 5:50 PM CST, 2 hours 58 minutes before
ARZ003>009-012>018-020>028-030>073-210145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
550 PM CST THU FEB 20 1997
...TORNADO WATCH IN EFFECT THIS EVENING...

TORNADO WATCH NUMBER 51 IS IN EFFECT FOR WESTERN AND CENTRAL ARKANSAS
UNTIL MIDNIGHT.

A STRONG STORM SYSTEM MOVING THROUGH TEXAS THIS EVENING WILL APPROACH
ARKANSAS LATER THIS EVENING. SEVERE WEATHER WAS BREAKING OUT ACROSS EAST
TEXAS...AND WILL MOVE INTO SOUTHWEST ARKANSAS DURING THE NEXT COUPLE OF
HOURS.

CONDITIONS ACROSS ARKANSAS ARE UNSTABLE...STORMS THAT DEVELOP IN THE
WEST AND CENTRAL AREAS COULD BECOME SEVERE QUICKLY. ALONG WITH THE
THREAT OF DAMAGING STORMS IN ARKANSAS...HEAVY RAINS WILL ACCOMPANY SOME
OF THE THUNDERSTORMS.

RESIDENTS ARE ADVISED TO STAY ABREAST OF DEVELOPING WEATHER THIS
EVENING.

34
Special weather statement, Feb 20, 5:51 PM CST, 2 hours 57 minutes before
ARZ003>009-012>018-020>028-030>073-210145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
550 PM CST THU FEB 20 1997
...TORNADO WATCH IN EFFECT THIS EVENING...

TORNADO WATCH NUMBER 51 IS IN EFFECT FOR WESTERN AND CENTRAL ARKANSAS
UNTIL MIDNIGHT.

A STRONG STORM SYSTEM MOVING THROUGH TEXAS THIS EVENING WILL APPROACH
ARKANSAS LATER THIS EVENING. SEVERE WEATHER WAS BREAKING OUT ACROSS EAST
TEXAS...AND WILL MOVE INTO SOUTHWEST ARKANSAS DURING THE NEXT COUPLE OF
HOURS.

CONDITIONS ACROSS ARKANSAS ARE UNSTABLE...STORMS THAT DEVELOP IN THE
WEST AND CENTRAL AREAS COULD BECOME SEVERE QUICKLY. ALONG WITH THE
THREAT OF DAMAGING STORMS IN ARKANSAS...HEAVY RAINS WILL ACCOMPANY SOME
OF THE THUNDERSTORMS.

RESIDENTS ARE ADVISED TO STAY ABREAST OF DEVELOPING WEATHER THIS
EVENING.

34
Special weather statement, Feb 20, 8:14 PM CST, 34 minutes before
ARZ003>009-012>018-020>028-030>073-210145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
820 PM CST THU FEB 20 1997

...TORNADO WATCH IN EFFECT THIS EVENING...

TORNADO WATCH NUMBER 51 IS IN EFFECT FOR WESTERN AND CENTRAL ARKANSAS
UNTIL MIDNIGHT.

A STRONG STORM SYSTEM MOVED THROUGH NORTH CENTRAL TEXAS LATE THURSDAY
AFTERNOON. AT 800 PM...THE STORM SYSTEM WAS MOVING INTO SOUTHERN
OKLAHOMA...AND STRONG STORMS ASSOCIATED WITH THE SYSTEM WERE MOVING
INTO EXTREME WESTERN ARKANSAS.

STORMS IN EXTREME EASTERN OKLAHOMA PRODUCED 70 MPH WINDS EARLIER.

A LINE OF STORMS IN WESTERN ARKANSAS WILL CONTINUE TO MOVE EASTWARD
AT A SLOW RATE OF SPEED. HOWEVER...INDIVIDUAL STORMS WILL MOVE TO THE
NORTH AT NEARLY 45 MPH. THE MAIN THREAT OF SEVERE WEATHER IN THE
WATCH AREA IS STRONG AND DAMAGING WINDS...AND THE POSSIBILITY OF AN
ISOLATED TORNADO.

34
Special weather statement, Feb 20, 8:20 PM CST, 28 minutes before
ARZ003>009-012>018-020>028-030>073-210145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
820 PM CST THU FEB 20 1997

...TORNADO WATCH IN EFFECT THIS EVENING...

TORNADO WATCH NUMBER 51 IS IN EFFECT FOR WESTERN AND CENTRAL ARKANSAS
UNTIL MIDNIGHT.

A STRONG STORM SYSTEM MOVED THROUGH NORTH CENTRAL TEXAS LATE THURSDAY
AFTERNOON. AT 800 PM...THE STORM SYSTEM WAS MOVING INTO SOUTHERN
OKLAHOMA...AND STRONG STORMS ASSOCIATED WITH THE SYSTEM WERE MOVING
INTO EXTREME WESTERN ARKANSAS.

STORMS IN EXTREME EASTERN OKLAHOMA PRODUCED 70 MPH WINDS EARLIER.

A LINE OF STORMS IN WESTERN ARKANSAS WILL CONTINUE TO MOVE EASTWARD
AT A SLOW RATE OF SPEED. HOWEVER...INDIVIDUAL STORMS WILL MOVE TO THE
NORTH AT NEARLY 45 MPH. THE MAIN THREAT OF SEVERE WEATHER IN THE
WATCH AREA IS STRONG AND DAMAGING WINDS...AND THE POSSIBILITY OF AN
ISOLATED TORNADO.

34

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 20, 7:46 PM CSTFlash Flood WarningLZKPolk3 hr
Feb 20, 8:31 PM CSTSevere Thunderstorm WarningLZKLogan64 min
Feb 20, 8:34 PM CSTSevere Thunderstorm WarningLZKFranklin66 min
Feb 20, 8:51 PM CSTSevere Thunderstorm WarningLZKYell49 min
Feb 20, 9:03 PM CSTSevere Thunderstorm WarningLZKGarland, Hot Spring47 min
Feb 20, 9:36 PM CSTSevere Thunderstorm WarningLZKDallas64 min
Feb 20, 10:00 PM CSTSevere Thunderstorm WarningLZKConway35 min
Feb 20, 10:03 PM CSTSevere Thunderstorm WarningLZKFaulkner62 min
Feb 20, 10:09 PM CSTSevere Thunderstorm WarningLZKPulaski61 min
Feb 20, 10:45 PM CSTSevere Thunderstorm WarningLZKCleburne65 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1997Every severe thunderstorm warning in 1997

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.