Alert archive / Arkansas / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Little Rock, AR

February 20, 1997Polk County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Feb 20, 1997, 7:46 PM CST for Polk County, Arkansas. It was in force for 3 hr. 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, 7:46 PM CST (01:46 UTC)
Expired
Feb 20, 1997, 10:45 PM CST
In force
3 hr
Issued by
NWS Little Rock, AR
Area
Whole counties

County Polk County, AR

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.8 hours before the alert went out and 227 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, Shreveport, LA at 00:00Z on 1997-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 820 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, Shreveport, LA at 00:00Z on 1997-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 302 square meters per square second.1939587897Sfc1 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
820 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
302 m²/s²
0-3 km storm-relative helicity
415 m²/s²
Significant tornado parameter
1.9
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLIT 210144
FFWLIT
ARC113-210445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
746 PM CST THU FEB 20 1997

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK AR HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN WESTERN ARKANSAS

   ...POLK COUNTY
 
AT 740 PM...HEAVY RAINS CONTINUE TO MOVE ACROSS PORTIONS OF POLK
COUNTY. A REPORT FROM JUST SOUTH OF MENA INDICATED THAT RAINFALL RATES
WERE NEAR TWO INCHES PER HOUR.
 
RESIDENTS IN THE AREA SHOULD BE ALERT TO RAPIDLY RISING WATERS ALONG
STREAMS AND FLOOD PRONE AREAS. BE PREPARED TO MOVE TO HIGHER GROUND.
MOTORISTS SHOULD NOT ATTEMPT TO DRIVE THROUGH LOW WATER CvROSSINGS THAT
ARE FLOODED.

34
&

What forecasters said that day

The local office's own words before this flash flood 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, 1 hour 56 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, 1 hour 55 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

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 8:31 PM CSTSevere Thunderstorm WarningLZKLogan64 min
Feb 20, 8:34 PM CSTSevere Thunderstorm WarningLZKFranklin66 min
Feb 20, 8:48 PM CSTSevere Thunderstorm WarningLZKJohnson52 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

Flash Flood Warnings in Arkansas, 1997Every flash flood 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.