Severe Thunderstorm Warning 61, NWS Shreveport, LA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
955 PM CST THU FEB 21 2008

.DISCUSSION...
UPDATED TO REPLACE TORNADO WATCH OVER SOUTHERN PORTION OF AREA...ORIGINALLY
EXPIRING AT 9 PM...WITH NEW TOR WATCH EXPIRING AT 4 AM. DROPPED
THREE OF THE FOUR TX COUNTIES IN LAKES REGION. INCREASED FOG FROM
PATCHY TO AREAS OF. DID NOT GO WITH DENSE FOG ADVISORY...WILL BE
LOCALISED DENSE...PARTICULARLY IN A FEW ISOLATED LOCATIONS WHERE
HAIL COVERED GROUND...BUT OVC SKIES SHOULD PRECLUDE WIDESPREAD.
MENTIONED THAT PCPN DIMINISH LATE...TO AVOID ANY MIDNIGHT UPDATE./VII/

&&

.AVIATION...

TORNADO WATCH HAS BEEN EXTENDED FOR SOUTHERN PARTS OF THE FOUR STATE
REGION UNTIL 4 AM CST FOR SABINE COUNTY IN DEEP EAST TEXAS AND
SABINE...NATCHITOCHES...GRANT...AND LA SALLE PARISHES IN NORTH
LOUISIANA. A SEVERE THUNDERSTORM WATCH WILL REMAIN IN EFFECT FOR
NORTH LOUISIANA PARISHES EAST OF RED RIVER...BIENVILLE...AND WEBSTER
PARISHES UNTIL 2 AM CST. SHOWERS AND THUNDERSTORMS CONTINUED OVER
THE FOUR STATE AREA ASSOCIATED WITH A SURFACE LOW CENTERED OVER DEEP
EAST TEXAS AND INTO WEST CENTRAL LOUISIANA WITH A NEARLY STATIONARY
FRONT REACHING EAST FROM ITS CENTER INTO SOUTH MISSISSIPPI...A COLD
FRONT TRAILING TO THE SOUTHWEST DOWN THE INLAND MIDDLE TEXAS COAST.
ANOTHER FRONTAL BOUNDARY REACHED TO THE NORTHEAST ACROSS NORTHEAST
LOUISIANA AND INTO NORTHWEST MISSISSIPPI AND CENTRAL
TENNESSEE...WHILE A WEAK INVERTED TROUGH REACHED NORTH FROM THE
SURFACE LOW OVER NORTHWEST LOUISIANA AND INTO SOUTHWEST ARKANSAS AND
PARTS OF EXTREME SOUTHEAST OKLAHOMA. ADDING TO THE MIX WAS AN UPPER
LEVEL TROUGH OVER THE PAN HANDLES OF TEXAS AND OKLAHOMA AND INTO
WEST TEXAS WHICH WAS SENDING A SERIES OF UPPER DISTURBANCES
OVERHEAD. THE RESULT BEING SCATTERED SHOWERS AND THUNDERSTORMS
PATCHY FOG...AND MVFR TO IFR CONDITIONS. NOT A GOOD NIGHT FOR
FLYING. THE SURFACE LOW WILL BE MOVING EAST AND REMAINING WINDS WILL
BE MAINLY NORTHWEST TO NORTHEAST ACROSS THE REGION. EXPECT LOW
CEILINGS AND VISIBILITIES UNTIL INTO THE EARLY DAY ON FRIDAY AS THEY
INCREASE FROM NORTHWEST TO SOUTHEAST. OUTLOOK FRIDAY..MVFR CEILINGS
AND CLOUDS BECMG VFR BY FRIDAY AFTERNOON. /06/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  44  59  40  63 /  40   0   0   0
MLU  49  60  41  61 /  40   0   0   0
DEQ  38  53  34  60 /  30   0   0   0
TXK  41  57  37  61 /  40   0   0   0
ELD  40  56  39  60 /  40   0   0   0
TYR  42  57  42  65 /  40   0   0   0
GGG  43  59  41  62 /  40   0   0   0
LFK  50  63  42  68 /  40   0   0   0

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1200 PM CST THU FEB 21 2008

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-221159-
ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE-
CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD-
HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION-
MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA-
PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX-
SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR-
WEBSTER-WINN-WOOD-
1200 PM CST THU FEB 21 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST OKLAHOMA...NORTHEAST
TEXAS...SOUTHWEST ARKANSAS...NORTHWEST AND NORTH CENTRAL LOUISIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

AN UPPER LEVEL STORM SYSTEM WILL MOVE INTO THE CENTRAL PLAINS
TODAY...PUSHING A COLD FRONT THROUGH THE FOUR STATE AREA TODAY AND
TONIGHT.  THIS WILL RESULT IN NUMEROUS THUNDERSTORMS. A VERY SLOW
MOVING FRONT NEAR THE INTERSTATE 20 CORRIDOR WILL RESULT IN
REPETITIVE THUNDERSTORMS...WITH HEAVY RAINFALL. TWO TO THREE
ADDITIONAL INCHES OF RAINFALL THIS AFTERNOON AND EVENING COULD RESULT
IN MINOR FLOODING PROBLEMS. AREAS SOUTH OF THE FRONT MAY SEE STRONG
TO POSSIBLY A FEW SEVERE STORMS LATE THIS AFTERNOON AND
EVENING AS TEMPERATURES WARM TO AROUND 70 DEGREES. THE MAIN
THREAT FROM THESE STORMS THAT DO DEVELOP WILL BE  HAIL
THREE QUARTERS OF AN INCH IN DIAMETER OR LARGER...AS WELL AS VERY
HEAVY RAIN IF THE FRONT REMAINS NEARLY STATIONARY. THIS THREAT WILL
DIMINISH AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER...HAM RADIO OPERATOR...AND EMERGENCY MANAGEMENT
PERSONNEL ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

VII

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1013 PM CST THU FEB 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 PM     HAIL             5 E STONEWALL           32.26N 93.73W
02/21/2008  E1.75 INCH       DE SOTO            LA   BROADCAST MEDIA

&&

STEVENS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1026 PM CST THU FEB 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1020 PM     HAIL             HAUGHTON                32.53N 93.51W
02/21/2008  E0.88 INCH       BOSSIER            LA   BROADCAST MEDIA

&&

STEVENS