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FLUS44 KSHV 201121
HWOSHV

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
621 AM CDT MON MAY 20 2013

ARZ050-051-059>061-070-071-OKZ077-TXZ096-097-108>112-124-125-
201700-
SEVIER-HOWARD-LITTLE RIVER-HEMPSTEAD-NEVADA-MILLER-LAFAYETTE-
MCCURTAIN-RED RIVER-BOWIE-FRANKLIN-TITUS-CAMP-MORRIS-CASS-WOOD-
UPSHUR-
621 AM CDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
ARKANSAS...SOUTHEAST OKLAHOMA AND NORTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT...

SHOWERS AND THUNDERSTORMS WILL BECOME NUMEROUS THIS EVENING ACROSS
CENTRAL AND EASTERN OKLAHOMA...WHILE SPREADING EAST INTO EXTREME
SOUTHEAST OKLAHOMA AND ADJACENT SECTIONS OF SOUTHWEST ARKANSAS
AFTER MIDNIGHT. SOME OF THESE STORMS MAY BECOME SEVERE AS THEY
ENTER THE REGION LATE TONIGHT...WITH DAMAGING WINDS AND LARGE HAIL
POSSIBLE. THESE STORMS MAY BEGIN TO WEAKEN LATE AS INSTABILITY
DIMINISHES.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

SHOWERS AND THUNDERSTORMS THAT WILL AFFECT THE REGION LATE TONIGHT
WILL LEAVE VARIOUS CONVECTIVE BOUNDARIES IN PLACE OVER THE AREA
TUESDAY...WHICH WILL FOCUS ADDITIONAL SCATTERED SHOWER AND
THUNDERSTORM DEVELOPMENT THROUGH MUCH OF THE DAY AS THE AIR MASS
DESTABILIZES DURING PEAK HEATING IN ADVANCE OF AN UPPER LEVEL
TROUGH. SOME OF THESE STORMS MAY BECOME SEVERE TUESDAY
AFTERNOON...WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. THESE
STORMS MAY DEVELOP INTO A LARGER CLUSTER OF SHOWERS AND
THUNDERSTORMS TUESDAY NIGHT AS THEY ADVANCE EAST SOUTHEAST ACROSS
EAST TEXAS AND SOUTHWEST ARKANSAS. LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE IN THE STRONGER STORMS...WITH RAINFALL AMOUNTS OF ONE TO
THREE INCHES POSSIBLE WHICH COULD RESULT IN LOCALIZED AREAS OF
FLASH FLOODING. THESE SHOWERS AND THUNDERSTORMS WILL DIMINISH FROM
WEST TO EAST LATE TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS...AND STORM SPOTTERS MAY BE NEEDED LATE TONIGHT ACROSS
SOUTHEAST OKLAHOMA AND ADJACENT SECTIONS OF SOUTHWEST ARKANSAS AND
EXTREME NORTHEAST TEXAS.

$$

ARZ072-073-LAZ001>006-010>014-017>022-TXZ126-136>138-149>153-
165>167-201700-
COLUMBIA-UNION AR-CADDO-BOSSIER-WEBSTER-CLAIBORNE-LINCOLN-
UNION LA-DE SOTO-RED RIVER-BIENVILLE-JACKSON-OUACHITA-SABINE LA-
NATCHITOCHES-WINN-GRANT-CALDWELL-LA SALLE-MARION-SMITH-GREGG-
HARRISON-CHEROKEE-RUSK-PANOLA-NACOGDOCHES-SHELBY-ANGELINA-
SAN AUGUSTINE-SABINE TX-
621 AM CDT MON MAY 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
ARKANSAS...SOUTHWEST ARKANSAS...NORTH CENTRAL LOUISIANA...
NORTHWEST LOUISIANA...EAST TEXAS AND NORTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT...

NO HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP TUESDAY ACROSS
PORTIONS OF NORTHEAST TEXAS AND SOUTHWEST ARKANSAS...ALONG
RESIDUAL BOUNDARIES FROM THUNDERSTORMS THAT WILL MOVE INTO THESE
AREAS LATE TONIGHT. STRONG DAYTIME HEATING WITHIN A VERY MOIST AIR
MASS IN PLACE WILL RESULT IN STRONG INSTABILITY TUESDAY
AFTERNOON...AS LARGE SCALE FORCING INCREASES WITH THE APPROACH OF
AN UPPER LEVEL TROUGH FROM THE WEST. SOME OF THESE STORMS MAY BECOME
SEVERE TUESDAY AFTERNOON OVER NORTHEAST TEXAS AND SOUTHWEST
ARKANSAS...AS THEY SPREAD EAST SOUTHEAST INTO NORTH LOUISIANA BY
TUESDAY EVENING. DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY
SEVERE WEATHER THREATS...ALTHOUGH THE THREAT FOR LOCALLY HEAVY
RAINFALL WILL INCREASE AS THESE STORMS GROW INTO LARGE CLUSTERS
THAT WILL PROGRESS OVER THE REGION TUESDAY NIGHT. LOCALIZED FLASH
FLOODING WILL BE POSSIBLE TUESDAY NIGHT...ALTHOUGH THE SEVERE
WEATHER AND HEAVY RAINFALL THREAT MAY DIMINISH LATE. THESE SHOWERS
AND THUNDERSTORMS WILL END FROM WEST TO EAST WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF EMERGENCY MANAGEMENT PERSONNEL...AMATEUR RADIO
OPERATORS...AND STORM SPOTTERS WILL NOT BE NEEDED TODAY OR TONIGHT.

$$

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