Severe Thunderstorm Warning 91, NWS Shreveport, LA

OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1125 PM CDT FRI MAY 11 1990

NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED TO DEVELOP
AND RACE NORTHEAST ACROSS NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...
SOUTHWEST ARKANSAS AND EXTREME NORTHWEST LOUISIANA.

THE STORMS WERE MOVING NORTHEAST AT 50 TO 60 MILES AN HOUR AND
WERE PRODUCING BRIEF STRONG WIND GUSTS AND HEAVY RAINFALL.

THE AREA OF SHOWERS AND ISOLATED THUNDERSTORMS EXTENDED NORTHWEST OF A
LINE FROM NEAR RISON ARKANSAS TO EL DORADO ARKANSAS TO HOMER LOUISIANA
TO WASKOM TEXAS TO HENDERSON TEXAS TO NEAR CROCKETT TEXAS.

LOCALIZED HEAVY RAINFALL AMOUNTS WILL OCCUR OVERNIGHT...AND SINCE
ALL MAJOR STREAMS ARE IN FLOOD...ALL CREEKS AND BAYOUS ARE IN
BACKWATER...THUS ADDITIONAL LOW AREA FLOODING MAY DEVELOP.
.
THE SHOWERS AND THUNDERSTORMS WILL DISRUPT FLOOD FIGHT ACTIVITIES
IN THE RED RIVER VALLEY OF SOUTHWEST ARKANSAS AND THE ADJACENT AREAS
OF NORTHEAST TEXAS.

LEVEE SYSTEMS ARE BEING TAXED BY THE CREST OF NEAR 32 FEET AT
INDEX AND 32.4 AT FULTON AND DOWNSTREAM TO GARLAN CITY.

ALSO ..A 50 MILE WIDE AREA OF SCATTERED SHOWERS WAS NOTED FROM NEAR
ARCADIA LOUISIANA TO ZWOLLE LOUISIANA TO SOUTH OF LUFKIN TEXAS.

AHEAD OF THESE SHOWERS AND THUNDERSTORMS...AN UPPER LEVEL IMPULSE WAS
PRODUCING STRONG GUSTY WINDS ACROSS NORTHEAST AND CENTRAL LOUISIANA.

OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-120800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
110 AM CDT SAT MAY 12 1990

NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS CONTINUED TO DEVELOP
AND RACE NORTHEAST ACROSS NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...
SOUTHWEST ARKANSAS AND NORTHWEST LOUISIANA.

THE STORMS WERE MOVING EAST NORTHEAST NEAR 50 MILES AN HOUR AND WERE
PRODUCING BRIEF STRONG WIND GUSTS AND HEAVY RAINFALL NEAR ONE INCH.

THE AREA OF SHOWERS AND ISOLATED THUNDERSTORMS EXTENDED NORTHWEST OF A
LINE FROM NEAR PINE BLUFF ARKANSAS TO NEAR FARMERVILLE LOUISIANA TO
CAMPTI LOUISIANA TO SOUTHWEST OF LUFKIN TEXAS. WITHIN THIS AREA A 15
MILE BAND OF THUNDERSTORMS THAT WERE PRODUCING ONE TO TWO INCH RAINS
AND STREET AND UNDERPASS FLOODING AS WELL AS GUSTY WINDS WERE NOTED
FROM NEAR STAMPS ARKANSAS TO JEFFERSON TEXAS TO HENDERSON TEXAS.
.
ANOTHER 15 MILE WIDE BAND OF THUNDERSTORMS EXTENDED FROM NEAR
HALL SUMMIT LOUISIANA TO NEAR CENTER TEXAS. THESE STORMS WERE
LIKELY PRODUCING RAINFALL AMOUNTS NEAR ONE INCH.

THE LOCALIZED HEAVY RAINFALL AMOUNTS WILL CONTINUE TO OCCUR
OVERNIGHT. ALL MAJOR STREAMS ARE IN FLOOD...ALL CREEKS AND BAYOUS
ARE IN BACKWATER SO ADDITIONAL LOW AREA FLOODING WILL DEVELOP.

THE SHOWERS AND THUNDERSTORMS WILL DISRUPT FLOOD FIGHT ACTIVITIES
IN THE RED RIVER VALLEY OF SOUTHWEST ARKANSAS AND THE ADJACENT AREAS
OF NORTHEAST TEXAS.

THE LEVEE SYSTEMS WERE BEING TAXED BY THE CREST OF NEAR 32 FEET AT
INDEX AND 32.4 AT FULTON AND DOWNSTREAM TO GARLAND CITY.

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND AFFECT THE
AREA TONIGHT AND SATURDAY. THE ADDITIONAL WATER WILL CAUSE MINOR
7INCREASES IN THE CREST STAGES EXPECTED ON AREA RIVERS AND STREAMS OR
AT LEAST PROLONG THE HIGH WATER SITUATION.

OKZ026-TXZ022-023-027-028-032-033-ARZ009-010-011-016-LAZ001-002-
003-004-005-006-120930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
305 AM CDT SAT MAY 12 1990

...A TORNADO WARNING REMAINED IN EFFECT FOR DE SOTO PARISH UNTIL
345 AM..A SEVERE THUNDERSTORM WARNING REMAINED IN EFFECT FOR
CLAIBORNE PARISH UNTIL 330 AM..THE WARNING IS NO LONGER IN EFFECT
FOR WEBSTER PARISH OR COLUMBIA COUNTY...

A SEVERE THUNDERSTORM WATCH WAS IN EFFECT FOR PART OF NORTHEAST
TEXAS AND THE NORTHERN HALF OF LOUISIANA UNTIL 1000 AM.

AT 300 AM CDT THE NATIONAL WEATHER SERVICE RADAR IN SHREVEPORT
SHOWED A POSSIBLE TORNADO NORTH OF LOGANSPORT LOUISIANA. MOVEMENT
WAS EAST NORTHEAST NEAR 40 MPH. ALSO A 15 MILE WIDE BAND OF
THUNDERSTORMS WAS NOTED FORM SOUTH OF EL DORADO ARKANSAS TO
ARCADIA LOUISIANA. MOVEMENT WAS NORTHEAST NEAR 60 MPH.
.
MEROUS SHOWERS AND THUNDERSTORMS EXTENDED WEST OF A LINE FROM
NEAR PINE BLUFF ARKANSAS TO MARION LOUISIANA TO NATCHITOCHES
LOUISIANA TO SOUTHWEST OF LUFKIN TEXAS.

THE TRAILING EDGE OF THE RAIN WAS NOTED FROM LEWISVILLE ARKANSAS
TO MARSHALL TEXAS.

THE SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND SPREAD
ACROSS THE WATCH AREA THROUGH THE NIGHTTIME HOURS.

ALONG WITH THE SEVERE STORMS...HEAVY RAINS OF ONE TO TWO INCHES
WILL OCCUR AND CAUSE LOW AREA AND STREET FLOODING.