Alert archive / Arkansas / Flash Flood Warnings in 1990

Flash Flood Warning 44, NWS Shreveport, LA

May 20, 1990Nevada County, Pike County, Arkansas

NWS Shreveport, LA issued this flash flood warning at May 20, 1990, 4:09 AM CDT for Nevada County, Pike County, Arkansas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: May 20, 1990, 4:09 AM CDT (09:09 UTC)
Expired: May 20, 1990, 7:15 AM CDT
In force: 3 hr
Issued by: NWS Shreveport, LA
Area: Whole counties

Counties Nevada County, AR, 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, 9.2 hours before the alert went out and 203 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: 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 200910
FFWSHV
ARC099-109-201215-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
409 AM CDT SUN MAY 20 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  715 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS..
 
IN SOUTHWEST ARKANSAS
 
   ...NEVADA COUNTY...PIKE COUNTY
 
AT 400 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT SHOWED
MODERATE TO HEAVY RAINS OCCURING OVER THE WARNED AREA. AN AREA OF
SHOWERS AND THUNDERSTORMS...ABOUT 50 MILES WIDE...WAS INDICATED THAT
EXTENDED FROM NEAR PITTSBURG TEXAS ACROSS TEXARKANA AND ANTOINE TO
NEAR LITTLE ROCK ARKANSAS. WITHIN THIS AREA THUNDERSTORMS THAT WERE
PRODUCING GUSTY WINDS...FREQUENT LIGHTNING AND HEAVY RAINS WERE
LOCATED FROM NEAR SPARKMAN TO READER TO NEAR HOPE ARKANSAS. ALSO
STORMS WERE NOTED FROM NEAR FOREMAN ARKANSAS TO 10 MILES WEST OF
MAUD TEXAS THAT WERE ALSO PRODUCING GUSTY WINDS AND HEAVY RAINS.
 
MOVEMENT WAS SOUTHEAST NEAR 25 MPH.
 
FLOODING WILL CONTINUE TO DEVELOP IN PIKE COUNTY WHERE RAINFALL
OF FOUR TO SEVEN INCHES HAS LIKELY OCCURRED...AND IN NEVADA
COUNTY WHERE TWO TO FOUR INCH RAINS HAVE BEEN NOTED.
 
A FLASH FLOOD WATCH REMAINED IN EFFECT THROUGH THE DAY FOR
SOUTHWEST ARKANSAS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:15 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Pike	60 min
May 19, 8:13 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Pike	62 min
May 19, 9:15 PM CDT	Severe Thunderstorm Warning	SHV	Pike	45 min
May 19, 10:00 PM CDT	Flash Flood Warning	SHV	Pike	3 hr
May 19, 10:00 PM CDT	Severe Thunderstorm Warning	SHV	Pike	3 hr
May 20, 1:00 AM CDT	Flash Flood Warning	SHV	Pike	3 hr
May 20, 1:00 AM CDT	Severe Thunderstorm Warning	SHV	Nevada	2 hr
May 20, 1:00 AM CDT	Severe Thunderstorm Warning	SHV	Pike	3 hr
May 20, 2:20 AM CDT	Tornado Warning	SHV	Little River, Sevier	40 min

Nearby

Flash Flood Warnings in Arkansas, 1990 Every 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.