Alert archive / Louisiana / Flash Flood Warnings in 1990

Flash Flood Warning 2, NWS Shreveport, LA

January 20, 1990Caldwell Parish, Jackson Parish, Winn Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Jan 20, 1990, 2:40 AM CST for Caldwell Parish, Jackson Parish, Winn Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jan 20, 1990, 2:40 AM CST (08:40 UTC)
Expired
Jan 20, 1990, 6:45 AM CST
In force
4 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

Counties Caldwell Parish, LA, Jackson Parish, LA, Winn Parish, LA

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

Jackson, MS (KJAN), launched 00:00Z, 8.7 hours before the alert went out and 223 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, Jackson, MS at 00:00Z on 1990-01-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Jackson, MS at 00:00Z on 1990-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
929 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSHV 200841
FFWSHV
LAC021-067-073-083-049-069-085-127-201245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
240 AM CST SAT JAN 20 1990
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  645 AM CST
FOR PEOPLE IN THE FOLLOWING PARISHES...
 
IN NORTHEAST LOUISIANA
          ...CALDWELL...MOREHOUSE...OUACHITA...RICHLAND
IN NORTHWEST LOUISIANA
          ...JACKSON...NATCHITOCHES...SABINE...WINN
 
AT 230 AM WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A LARGE AREA
OF SHOWERS AND THUNDERSTORMS..SOME PRODUCING HEAVY RAINFALL..OVER
NORTH LOUISIANA SOUTHEAST OF A LINE FROM NEAR BASTROP SOUTHWEST
TO NEAR NATCHITOCHES AND MANY. THE SHOWERS AND THUNDERSTORMS HAVE
BEEN MOVING TO THE NORTHEAST AT 40 MPH AND HAVE BEEN DEVELOPING AND
SPREADING ACROSS THE SAME GENERAL REGION.
 
RADAR AND SATELLITE ESTIMATES ARE THAT FROM TWO TO OVER THREE INCHES
HAS FALLEN ACROSS THE WARNED AREA DURING THE PAST THREE HOURS. THIS
WAS OVER AN AREA THAT OVER THE PAST THREE DAYS HAD RECEIVED FROM FOUR
TO OVER SEVEN INCHES OF RAIN. AS A RESULT EXCESS WATER RUNOFF HAS
PLACED STREAMS AND BAYOUS AT BANKFULL AND SOME OUT OF THEIR
BANKS AFFECTING RAODS AND LOW AREAS. SOME HOMES MAY ALSO BE AFFECTED
AS WATERS CONTINUE TO RUNOFF.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR [LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

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

Local storm report, Jan 19, 9:25 PM CST, 5 hours 15 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
920 PM CST FRI JAN 20 1990

REPORTS FOR  JAUNARY 20TH....NOT ALL REPORTS.

TIME 840      CNTY/PARISH
              LINCOLN      CONSIDERABLE WIND DAMAGE NEAR GRAMBLING
                           UNIVERSITY TO TREES POWER LIWES..SEVERAL
                           MOBILE JOMES.   ALSO WIND DAMAGE IN NORTH
                           WEST RUSTON TO MOBILE HOMES.

SAME STORM PRODUICED WIND DAMAGE ,IN PARTS OF RED RIVER...SABINE AND
NATCHITOCHES PARISH...HAIL UP TO ONE INCH IN DIAMETER HAS ALSO OCCURRED
WITH SOME OF THE STORMS THIS EVENING.
Special weather statement, Jan 19, 11:27 PM CST, 3 hours 13 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-192300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1125 PM CST FRI JAN 19 1990

...TORNADO WATCH HAS EXPIRED FOR EASTERN LOUISIANA...
...A FLASH FLOOD WATCH IN EFFECT FOR NORTH LOUISIANA EXCEPT FOR
THE NORTHWEST CORNER FOR TONIGHT...

AT 1115 PM CST WEATHER SERVICE IN SHREVEPORT SHOWED A LARGE
AREA OF SHOWERS AND THUNDERSTORMS..SOME PROUDCING VERY HEAVY
RAINFALL THAT COVERED MUCH OF NORTH LOUISIANA..SOUTHEAST ARKANSAS..
AND SOUTHEAST TEXAS SOUTHEAST OF A LINE FROM NEAR PINE BLUFF
SOUTHWEST TO NEAR EL DORADO ARKANSAS ACROSS NORTHWEST LOUISIANA
TO SHREVEPORT..AND INTO SOUTHEAST TEXAS TO NEAR LUFKIN.  WITHIN
THE LARGE RAIN MASS THE HEAVIER THUNDERSTORMS EXTENDED FROM NEAR
RAYVILLE SOUTHWEST TO NEAR COLUMBIA..AND TO NEAR DE RIDDER AND
FROM NEAR FARMERVILLE SOUTHWEST TO NEAR JONESBORO AND MANY LOUISIANA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 30 MPH
AND WILL LIKELY PRODUCE HEAVY RAINFALL..DANGEROUS LIGHTNING..AND
STRONG AND GUSTY WINDS.

THE HEAVY RAINFALL HAS BEEN FALLING OVER AN AREA OF SATURATED
SOILS AND MAY CAUSE FLOODING OF STREETS..LOW LYING AND POOR
DRAINAGE AREAS. PERSONS SHOULD TRY TO AVOID WATER COVERED AREAS.
Special weather statement, Jan 20, 12:27 AM CST, 2 hours 13 minutes before
TXZ028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-200730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1225 AM CST SAT JAN 20 1990

...A FLASH FLOOD WATCH IN EFFECT FOR NORTH LOUISIANA EXCEPT FOR
THE NORTHWEST CORNER FOR TONIGHT...

AT 1215 AM CST WEATHER SERVICE RADAR IN SHREVEPORT SHOWED A LARGE
AREA OF SHOWERS AND THUNDERSTORMS..SOME PROUDCING VERY HEAVY
RAINS..OVER SOUTHEAST ARKANSAS..WESTERN MISSISSIPPI..MUCH OF NORTH
AND CENTRAL LOUISISANA AND SOUTHEAST TEXAS. THE RAIN WAS GENERALLY
SOUTHEAST OF A LINE FROM NEAR PINE BLUFF SOUTHWEST TO EL DORADO
ARKANSAS ACROSS NORTHWEST LOUISIANA TO NEAR ARCADIA AND MANSFIELD
AND INTO SOUTHEAST TEXAS TO NEAR HOUSTON. WITHIN THE LARGE RAIN
MASS THE HEAVIER THUNDERSTORMS..WHICH WERE PRODUCING TORRENTIAL
RAINS..WERE INDICATED FROM NEAR MONROE SOUTH TO COLUMBIA AND JENA
LOUISIANA. MOVEMENT WAS TO THE NORTHEAST AT 40 MPH. THE STRONGER
STORMS WERE PRODUCING STRONG AND GUSTY WINDS..FREQUENT LIGHTNING..
AND VERY HEAVY RAINFALL.

PERSONS IN THE PATH OF THESE STORMS SHOULD BE ALERT..FOR THE NEXT
COUPLE OF HOURS OVER NORTHEAST LOUISIANA ESPECIALLY FROM MONROE
AND COLUMBIA EAST.

FLOODING THREAT REMAINS HIGH OVER NORTHERN LOUISIANA UNTIL THE
STORMS MOVE EAST OUT OF THE STATE.
Special weather statement, Jan 20, 2:00 AM CST, 40 minutes before
TXZ028-032-033-ARZ009-010-011-016-LAZ001-002-003-
004-005-006-200745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
200 AM CST SAT JAN 20 1990

...A FLASH FLOOD WATCH IN EFFECT FOR NORTH LOUISIANA EXCEPT FOR
THE NORTHWEST CORNER FOR TONIGHT...

AT 145 AM CST WEATHER SERVICE RADARS IN SHREVEPORT AND JACKSON
SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER MUCH OF
NORTH LOUISIANA AND PARTS OF SOUTHEAST ARKANSAS..SOUTHEAST TEXAS..
AND WESTERN MISSISSIPPI. THE LARGE RAIN MAS WAS GENERALLY SOUTHEAST
OF A LINE FROM NEAR HAMBURG ARKANSAS SOUTHWEST TO NEAR RUSTON..
AND MANY LOUISIANA AND INTO SOUTHEAST TEXAS TO NEAR LUFKIN. THE
STRONGER THUNDERSTORMS WERE INDICATED OVER MADISON PARISH NEAR
TALLULAH AND OVER TENSAS PARISH NEAR ST JOSEPH. THESE STORMS HAVE
BEEN PRODUCING VERY HEAVY RAINFALL AS THEY MOVED TO THE NORTHEAST
AT 40 MPH. OTHER THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL WERE
INDICATED NEAR WINNFIELD SOUTHWEST TO NEAR FLORIEN LOUISIANA.
.
ELSEWHERE MOST OF THE RAINS WERE OF LIGHT TO MODERATE INTENSITIES
AND FALLING AT A STEADY RATE. RADAR AND SATELLITE ESTIMATES ARE
THAT AROUND TWO TO THREE INCHES HAVE FALLEN ACROSS MUCH OF NORTH
CENTRAL AND NORTHEAST LOUISIANA FROM THE NORTHEAST PART OF THE
STATE SOUTHWEST TO THE LOWER TOLEDO BEND LAKE COUNTRY.  AS A
RESULT OF THE RAINFALL OVER SATURATED SOILS WATER RUNOFF WILL
CAUSE FLOODING OF SOME ROADS NEAR STREAMS AND BAYOUS OUT OF
THEIR BANKS.  THIS FLOODING SHOULD BE SHORT LIVED OVER THE WESTERN
SECTIONS DUE TO THE RAINFALL TAPERING OFF.  HOWEVER SOUTHEAST OF A
LINE FROM NEAR NATCHITOCHES NORTHEAST TO NEAR MONROE AND BASTROP
FLOODING MAY BE ON THE INCREASE UP THROUGH MID MORNING .1

...THE SEVERE THUNDRSTORM WARNINGS FOR FRANKLIN..TENSAS..AND MADISON
PARISHES IN NORTHEAST LOUISIANA HAVE EXPIRED AND NO LONGER IN EFFECT...

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 19, 6:25 PM CSTSevere Thunderstorm WarningSHVSabine65 min
Jan 19, 7:36 PM CSTSevere Thunderstorm WarningSHVBienville, Red River69 min
Jan 19, 7:45 PM CSTSevere Thunderstorm WarningSHVSabine90 min
Jan 19, 8:04 PM CSTSevere Thunderstorm WarningSHVLincoln, Union86 min
Jan 19, 8:04 PM CSTSevere Thunderstorm WarningSHVNatchitoches86 min
Jan 19, 9:19 PM CSTSevere Thunderstorm WarningSHVJackson, Natchitoches, Winn101 min
Jan 19, 9:19 PM CSTSevere Thunderstorm WarningSHVMorehouse, Ouachita101 min
Jan 20, 12:48 AM CSTSevere Thunderstorm WarningSHVFranklin, Madison, Tensas57 min
Jan 20, 2:40 AM CSTFlash Flood WarningSHVMorehouse, Ouachita, Richland4 hr
Jan 20, 2:40 AM CSTFlash Flood WarningSHVNatchitoches, Sabine4 hr

Nearby

Flash Flood Warnings in Louisiana, 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.