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FLUS44 KSHV 201740
HWOSHV

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1200 PM CDT MON MAY 20 2013

ARZ050-051-059>061-070-071-OKZ077-TXZ096-097-108>112-124-125-211100-
BOWIE-CAMP-CASS-FRANKLIN-HEMPSTEAD-HOWARD-LAFAYETTE-LITTLE RIVER-
MCCURTAIN-MILLER-MORRIS-NEVADA-RED RIVER TX-SEVIER-TITUS-UPSHUR-WOOD-
1200 PM CDT MON MAY 20 2013

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

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

SHOWERS AND THUNDERSTORMS WILL BECOME NUMEROUS THIS EVENING ACROSS
CENTRAL AND EASTERN OKLAHOMA...AND SPREAD 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.
STORMS WILL WEAKEN LATE TONIGHT AS INSTABILITY DIMINISHES.

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

SHOWERS AND THUNDERSTORMS OVERNIGHT WILL LEAVE CONVECTIVE BOUNDARIES
IN PLACE TUESDAY...WHICH WILL FOCUS SCATTERED SHOWERS AND
THUNDERSTORMS THROUGH MUCH OF THE DAY TUESDAY...AS THE AIR MASS
DESTABILIZES DURING PEAK HEATING IN ADVANCE OF AN UPPER LEVEL
TROUGH OF LOW PRESSURE. SOME THUNDERSTORMS WILL BECOME SEVERE
TUESDAY AFTERNOON...PRODUCING HIGH AND DAMAGING WINDS...LARGE HAIL...
DEADLY LIGHTNING...AND LOCALLY HEAVY RAINFALL. THESE STORMS
ARE EXPECTED TO DEVELOP INTO A LARGER CLUSTER OF SHOWERS AND
THUNDERSTORMS TUESDAY NIGHT...AS THEY ADVANCE EAST SOUTHEAST ACROSS
EAST TEXAS AND SOUTHWEST ARKANSAS. RAINFALL AMOUNTS OF ONE TO
THREE INCHES WILL BE POSSIBLE...WHICH CAN RESULT IN LOCALIZED
FLASH FLOODING AND PONDING OF WATER IN STREETS...LOW
LYING...AND POOR DRAINAGE AREAS. SHOWERS AND THUNDERSTORMS WILL
DIMINISH FROM WEST TO EAST LATE TUESDAY NIGHT AND EARLY WEDNESDAY.

.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-
211100-
ANGELINA-BIENVILLE-BOSSIER-CADDO-CALDWELL-CHEROKEE-CLAIBORNE-
COLUMBIA-DE SOTO-GRANT-GREGG-HARRISON-JACKSON-LA SALLE-LINCOLN-
MARION-NACOGDOCHES-NATCHITOCHES-OUACHITA-PANOLA-RED RIVER LA-RUSK-
SABINE LA-SABINE TX-SAN AUGUSTINE-SHELBY-SMITH-UNION AR-UNION LA-
WEBSTER-WINN-
1200 PM CDT MON MAY 20 2013

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

.DAY ONE...THIS AFTERNOON 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 EARLIER THUNDERSTORMS. STRONG DAYTIME
HEATING WITHIN A VERY MOIST AIR MASS WILL RESULT IN STRONG
INSTABILITY TUESDAY AFTERNOON...AS LARGE SCALE FORCING INCREASES
WITH THE APPROACH OF AN UPPER LEVEL TROUGH OF LOW PRESSURE FROM
THE WEST. SOME THUNDERSTORMS WILL HAVE THE POTENTIAL TO BECOME
SEVERE TUESDAY AFTERNOON OVER NORTHEAST TEXAS AND SOUTHWEST
ARKANSAS...AND INTO NORTH LOUISIANA TUESDAY EVENING...AS THEY SPREAD
EAST SOUTHEAST. HIGH AND DAMAGING WINDS AND LARGE HAIL WILL BE THE
PRIMARY SEVERE WEATHER THREATS...WITH DEADLY LIGHTNING AND A THREAT
FOR LOCALLY HEAVY RAINFALL AS STORMS GROW INTO LARGE CLUSTERS. THESE
CLUSTERS WILL PROGRESS OVER THE AREA TUESDAY NIGHT. LOCALIZED FLASH
FLOODING AND PONDING OF WATER IN STREETS...LOW LYING...AND POOR
DRAINAGE AREAS WILL BE POSSIBLE TUESDAY NIGHT. THE SEVERE
WEATHER AND HEAVY RAINFALL THREAT WILL DIMINISH LATE TUESDAY NIGHT
AND EARLY WEDNESDAY MORNING...WITH SHOWERS AND THUNDERSTORMS
END FROM WEST TO EAST ON WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

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

$$

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