Alert archive / Louisiana / Flash Flood Warnings in 1990

Flash Flood Warning 91, NWS Shreveport, LA

September 9, 1990Union Parish, Louisiana

NWS Shreveport, LA issued this flash flood warning at Sep 9, 1990, 6:59 PM CDT for Union Parish, Louisiana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 9, 1990, 6:59 PM CDT (23:59 UTC)
Expired
Sep 9, 1990, 11:00 PM CDT
In force
4 hr
Issued by
NWS Shreveport, LA
Area
Whole counties

County Union 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

Longview/Gregg, TX (KGGG), launched 12:00Z, 12.0 hours before the alert went out and 215 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 12:00Z on 1990-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Longview/Gregg, TX at 12:00Z on 1990-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 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, Sep 9, 1:51 PM CDT, 5 hours 8 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-DDTTTT-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
150 PM CDT SUN SEP 9 1990

SHOWERS AND STRONG THUNDERSTORMS OVER EASTERN TEXAS

AT 145 PM SHREVEPORT WEATHER RADAR SHOWED A STRONG THUNDERSTORM ABOUT
12 MILES SOUTHEAST OF CENTER TEXAS MOVING TO THE EAST NEAR 15 MPH.
THIS THUNDERSTORM HAS INCREASED CONSIDERABLY OVER THE PAST HOUR AND
WILL LIKELY PRODUCE HEAVY RAINFALL AMOUNTS...FREQUENT LIGHTNING...
STRONG GUSTY WINDS AND POSSIBLE HAIL DURING THE NEXT HOUR OR SO.

THIS THUNDERSTORM WAS PART OF A BAND OF RAIN ALONG WITH SCATTERED
SHOWERS AND THUNDERSTORMS FROM WEST OF A PARIS...TYLER...PALESTINE
LINE EASTWARD ACROSS NORTHEAST TEXAS INTO NORTHWEST LOUISIANA.

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO AFFECT PORTIONS OF
NORTHEAST TEXAS...EXTREME SOUTHWEST ARKANSAS AND NORTHERN LOUISIANA
THIS AFTERNOON INTO TONIGHT.  SOME OF THE STRONGER THUNDERSTORMS
WILL PRODUCE HEAVY RAINFALL...FREQUENT LIGHTNING...STRONG WINDS
AND HAIL.
Special weather statement, Sep 9, 5:17 PM CDT, 1 hour 42 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-100135-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
515 PM CDT SUN SEP 9 1990

...SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINS..OVER
EAST CENTRAL TEXAS AND ACROSS WEST CENTRAL AND CENTRAL LOUISIANA...

AT 505 PM CDT WEATHER SERVICE RADARS IN LONGVIEW AND SHREVEPORT SHOWED
AN AREA OF SHOWERS AND THUNDERSTORMS OVER EAST CENTRAL TEXAS AND WEST
CENTRAL AND CENTRAL LOUISIANA. THE AREA WAS GENERALLY SOUTH OF A LINE
FROM NEAR LUFKIN EAST TO NEAR HEMPHILL TEXAS ACROSS LOWER TOLEDO BEND
LAKE INTO LOUISIANA TO NEAR FLORIEN..ALEXANDRIA..AND JENA. ALONG THE
LEADING OR NORTHERN EDGE..SHOWERS AND THUNDERSTORMS..SOME PRODUCING
VERY HEAVY RAINFALL..WERE NOTED NEAR FLORIEN..15 MILES SOUTHWEST OF
CYPRESS..AND 15 MILES SOUTHEAST OF CYPRESS LOUISIANA.  THE SHOWERS AND
THUNDERSTORMS WERE MOVING TO THE NORTH AT 15 MPH AND THE STRONGER
STORMS WERE PROUDCING VERY HEAVY RAINS..FREQUENT AND DANGEROUS LIGHTNING
..AND GUSTY WINDS.
.
RADARS ALSO SHOWED AN AREA OF RAIN AND SHOWERS OVER NORTHEAST TEXAS
FROM NEAR LONE STAR..LONGVIEW..AND APPLEBY WEST INTO NORTH CENTAL
TEXAS  AND WIDELY SCATTERED SHOWERS AND THUNDERSTORMS FROM NEAR
BOSSIER CITY AND MANSFIELD EAST TO NEAR JONESBORO AND COLUMBIA.
THESE RAIN..SHOWERS..AND ISOLATED THUNDERSTORMS WERE MOVING TO THE
NORTHEAST AT 10 MPH.
Special weather statement, Sep 9, 6:35 PM CDT, 24 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-100135-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
630 PM CDT SUN SEP 9 1990

...SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINS..CONTINUE
OVER EAST CENTRAL TEXAS EAST ACROSS WEST CENTRAL..CENTRAL..AND INTO
EAST LOUISIANA...

AT 620 PM CDT WEATHER SERVICE RADAR IN SHREVEPORT SHOWED AN AREA OF
SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINS..OVER
EAST CENTRAL TEXAS EAST ACROSS WEST CENTRAL..CENTRAL.AND INTO EAST
LOUISIANA.  THE AREA EXTENDED FROM NEAR VICKSBURG MISSISSIPPI
SOUTHWEST TO NEAR WINNSBORO..COLFAX..MANY..AND ZWOLLE LOUISIANA
AND INTO EAST TEXAS TO NEAR CENTER AND RUSK. THE STRONGER THUNDERSTORMS
WITHIN THE AREA WERE NOTED NEAR WISNER..WINNSBORO..AND GRETNA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTH AT 15 MPH AND
THE STRONGER STORMS WERE PROUDCING VERY HEAVY RAINS..FREQUENT AND
DANGEROUS LIGHTNING..GUSTY WINDS AND POSSIBLY SOME HAIL.
.
RADAR ALSO SHOWED A SMALLER AREA OF SHOWERS AND STRONG THUNDERSTORMS
FROM NEAR COUSHATTA EAST TO NEAR CAMPTI LOUISIANA AND ISOLATED
THUNDERSTORMS NEAR JONESBORO AND CHATHAM LOUISIANA MOVING TO THE
NORTHEAST AT 15 MPH.

IN EAST TEXAS RADAR SHOWED AN AREA OF RAIN AND SHOWERS FROM NEAR
LONGVIEW AND CARTHAGE NORTH TO NEAR LINDEN AND KILDARE AND ANOTHER
FROM NEAR ATHENS NORTH TO NEAR QUITMAN AND WINNSBORO TEXAS. THE
RAIN AND SHOWERS WERE MOVIVNG TO THE NORTHEAST AT 15 MPH.
Special weather statement, Sep 9, 6:43 PM CDT, 16 minutes before
OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-100135-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
630 PM CDT SUN SEP 9 1990

...SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINS..CONTINUE
OVER EAST CENTRAL TEXAS EAST ACROSS WEST CENTRAL..CENTRAL..AND INTO
EAST LOUISIANA...

AT 620 PM CDT WEATHER SERVICE RADAR IN SHREVEPORT SHOWED AN AREA OF
SHOWERS AND THUNDERSTORMS..SOME PRODUCING VERY HEAVY RAINS..OVER
EAST CENTRAL TEXAS EAST ACROSS WEST CENTRAL..CENTRAL.AND INTO EAST
LOUISIANA.  THE AREA EXTENDED FROM NEAR VICKSBURG MISSISSIPPI
SOUTHWEST TO NEAR WINNSBORO..COLFAX..MANY..AND ZWOLLE LOUISIANA
AND INTO EAST TEXAS TO NEAR CENTER AND RUSK. THE STRONGER THUNDERSTORMS
WITHIN THE AREA WERE NOTED NEAR WISNER..WINNSBORO..AND GRETNA LOUISIANA.
THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTH AT 15 MPH AND
THE STRONGER STORMS WERE PROUDCING VERY HEAVY RAINS..FREQUENT AND
DANGEROUS LIGHTNING..GUSTY WINDS AND POSSIBLY SOME HAIL.
.
RADAR ALSO SHOWED A SMALLER AREA OF SHOWERS AND STRONG THUNDERSTORMS
FROM NEAR COUSHATTA EAST TO NEAR CAMPTI LOUISIANA AND ISOLATED
THUNDERSTORMS NEAR JONESBORO AND CHATHAM LOUISIANA MOVING TO THE
NORTHEAST AT 15 MPH.

IN EAST TEXAS RADAR SHOWED AN AREA OF RAIN AND SHOWERS FROM NEAR
LONGVIEW AND CARTHAGE NORTH TO NEAR LINDEN AND KILDARE AND ANOTHER
FROM NEAR ATHENS NORTH TO NEAR QUITMAN AND WINNSBORO TEXAS. THE
RAIN AND SHOWERSi WERE MOVING TO THE NORTHEAST AT 15 MPH.

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.