WWUS44 KTSA 121055
SPSTUL
ARZ001-002-010-011-019-020-029-OKZ049-053>076-131200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
600 AM CDT MON JUN 12 2000

A FEW THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING IN
NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA...GENERALLY SOUTHEAST OF A
LINE FROM BENTONVILLE TO MUSKOGEE TO HENRYETTA.

.SYNOPSIS...
TROPICAL MOISTURE WILL REMAIN IN PLACE ACROSS SOUTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS TODAY WHILE SOMEWHAT DRIER AIR IN THE MID LEVELS
HAS SPREAD INTO NORTHEAST OKLAHOMA.

.PRIMARY HAZARD...
WIDELY SCATTERED THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAINFALL
WILL BE POSSIBLE SOUTHEAST OF A BENTONVILLE TO MUSKOGEE TO HENRYETTA
LINE THIS AFTERNOON AND EVENING.

.DISCUSSION...
A MOIST UNCAPPED AIRMASS WILL REMAIN ACROSS SOUTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS TODAY. DAYTIME HEATING WILL ONCE AGAIN ALLOW THE
AIRMASS TO DESTABILIZE ENOUGH FOR WIDELY SCATTERED THUNDERSTORMS TO
DEVELOP THIS AFTERNOON. HEAVY RAINFALL WILL BE A THREAT WITH ANY
STORMS THAT DO DEVELOP. AS THE ATMOSPHERE COOLS AND STABILIZES THIS
EVENING...ANY THUNDERSTORMS THAT DEVELOP WILL DISSIPATE BY MIDNIGHT.

DRIER AIR IN THE MID LEVELS HAS SPREAD INTO NORTHEAST OKLAHOMA BUT
ABUNDANT LOW LEVEL MOISTURE REMAINS. ENOUGH SUNSHINE IS EXPECTED
TODAY TO ALLOW TEMPERATURES TO WARM INTO THE MID TO UPPER 80S WITH
DEWPOINTS IN THE LOWER 70S. THE AIRMASS IN NORTHEAST OKLAHOMA WILL
BECOME QUITE UNSTABLE AS A RESULT WITH CAPES GREATER THAN 3000 J/KG.
HOWEVER...THE LACK OF ANY FOCUSING MECHANISM IS EXPECTED TO SUPPRESS
THUNDERSTORM DEVELOPMENT IN NORTHEAST OKLAHOMA TODAY AND TONIGHT.

.SPOTTER ACTIVATION...
SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT.