WWUS20 KWNS 140315
SEL5
SPC WW 140315
ARZ000-MOZ000-OKZ000-TXZ000-140900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 665
NWS STORM PREDICTION CENTER NORMAN OK
1015 PM CDT SAT OCT 13 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       WESTERN AND CENTRAL ARKANSAS
       SOUTH CENTRAL MISSOURI
       EXTREME SOUTHEAST OKLAHOMA
       NORTHEAST TEXAS

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1015 PM
UNTIL 400 AM CDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF WEST
PLAINS MISSOURI TO 40 MILES SOUTH OF DE QUEEN ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 664...

DISCUSSION...A BAND OF STRONG/SEVERE THUNDERSTORMS EXTENDS FROM
SOUTHWEST MO/NORTHWEST AR INTO SOUTHEAST OK/NORTHEAST TX.  THESE
STORMS WILL TRACK EAST-NORTHEASTWARD TONIGHT ACROSS THE WATCH AREA. 
SLOW AIRMASS STABILIZATION IS OCCURRING WHICH SHOULD TEND OF ALLOW
THE STORMS TO LOSE INTENSITY.  HOWEVER...STRONG WIND FIELDS AND AN
APPROACHING UPPER TROUGH MAY PROVIDE A CONTINUED THREAT OF LOCALLY
DAMAGING WIND GUSTS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 25035.


...HART