Alert archive / Arkansas / Flash Flood Warnings in 1990

Flash Flood Warning 42, NWS Shreveport, LA

May 19, 1990Pike County, Arkansas

NWS Shreveport, LA issued this flash flood warning at May 19, 1990, 10:00 PM CDT for Pike County, Arkansas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 19, 1990, 10:00 PM CDT (03:00 UTC)
Expired
May 20, 1990, 1:00 AM CDT
In force
3 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

County Pike 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 3.0 hours before the alert went out and 220 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, Longview/Gregg, TX at 00:00Z on 1990-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1308 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Longview/Gregg, TX at 00:00Z on 1990-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.193958Sfc1 km3 km6 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
1308 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
937 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 200301
FFWSHV
ARC109-200600-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1000 PM CDT SAT MAY 19 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  100 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN SOUTHWEST ARKANSAS
 
   ...PIKE COUNTY
 
SHREVEPORT WEATHER RADAR AT 955 PM SHOWED YET ANOTHER SEVERE
THUNDERSTORM OVER PIKE COUNTY JUST SOUTHWEST OF MURFREESBORO
MOVING TO THE EASTNORTHEAST NEAR 25 MPH.
 
THIS IS THE THIRD SEVERE THUNDERSTORM TO MOVE OVER PIKE COUNTY OVER
THE LAST THREE HOURS...THE PREVIOUS TWO STORMS PRODUCED PRODUCED
HIGHS WINDS DOWNING TREES AND SPOTTY HAIL UP TO ONE INCH IN
DIAMETER ALONG WITH HEAVY RAINFALL.  THE NEW SEVERE THUNDERSTORM
WILL LIKELY PRODUCE SIMILER CONDITIONS...THUS ALONG WITH THE THREAT
OF SEVERE WEATHER...FLASH FLOODING WILL LIKELY OCCUR WITH RAINFALL
AMOUNTS POSSIBLY EXCEEDING FOUR INCHES.
 
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF WESTERN
ARKANSAS.  TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN
OKLAHOMA.
 
THESE STORMS ARE PART OF A BAND OF THUNDERSTORMS FROM NORTHWEST OF
LITTLE ROCK THROUGH THE HOT SPRINGS GLENWOOD MURFREESBORO AREA..
INTO OKLAHOMA TO 40 MILES NORTH OF BROKEN BOW TO SOUTHEAST OF MC-
ALESTER.

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, May 19, 5:23 PM CDT, 4 hours 37 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006- 200015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
520 PM CDT SAT MAY 19 1990

THE SHREVEPORT WEATHER RADAR AT 517 PM SHOWED STRONG THUNDERSTORMS
DEVELOPING OVER SOUTHWESTERN ARKANSAS...ONE LOCATED OVER NORTHERN
HOWARD COUNTY AND ANOTHER LOCATED OVER CENTRAL HOWARD COUNTY NORTH-
WEST OF NASHVILLE.  MOVEMENT WAS TO THE EASTNORTHEAST NEAR 30 MPH.

ELSEWHERE...THUNDERSTORMS WERE DEVELOPING OVER TEXAS TO THE SOUTHEAST
OF THE DALLAS AREA.  THESE STORMS WILL LIKELY MOVE INTO NORTHEAST
TEXAS LATER TONIGHT.

A TORNADO WATCH IS IN EFFECT FOR MUCH OF EASTERN AND SOUTHEASTERN
OKLAHOMA...INCLUDING MC CURTAIN COUNTY.  PERSONS IN OR CLOSE TO THE
TORNADO WATCH AREA SHOULD WATCH FOR RAPIDLY CHANGING WEATHER CONDITIONS
AND LISTEN FOR LATER STATEMENTS OR WARNINGS.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 19, 7:15 PM CDTSevere Thunderstorm WarningSHVHempstead, Pike60 min
May 19, 8:13 PM CDTSevere Thunderstorm WarningSHVHoward, Pike62 min
May 19, 9:15 PM CDTSevere Thunderstorm WarningSHVPike45 min
May 19, 10:00 PM CDTSevere Thunderstorm WarningSHVPike3 hr
May 20, 1:00 AM CDTFlash Flood WarningSHVPike3 hr
May 20, 1:00 AM CDTSevere Thunderstorm WarningSHVNevada2 hr
May 20, 1:00 AM CDTSevere Thunderstorm WarningSHVPike3 hr
May 20, 2:20 AM CDTTornado WarningSHVLittle River, Sevier40 min
May 20, 4:09 AM CDTFlash Flood WarningSHVNevada, Pike3 hr

Nearby

Flash Flood Warnings in Arkansas, 1990Every flash flood 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.