WWUS20 KWNS 030401
SEL3
SPC WW 030401
OKZ000-030900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 343
NWS STORM PREDICTION CENTER NORMAN OK
1100 PM CDT SAT JUN 2 2012

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

       WESTERN AND NORTHERN OKLAHOMA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1100 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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF ALVA
OKLAHOMA TO 20 MILES EAST SOUTHEAST OF CLINTON OKLAHOMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).

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 341...WW 342...

DISCUSSION...TSTM COMPLEX IN THE NE TX PANHANDLE APPEARS TO BE
GAINING ORGANIZATION/STRENGTH...AND POSSIBLY DEVELOPING AN MCV. 
THESE OBSERVATIONS...COUPLED WITH INCREASING MOIST/STRONG SSELY LOW
LVL FLOW PER VWP DATA...AND WEAK UPR IMPULSE IN MODERATE WNWLY MID
LVL FLOW...TOGETHER SUGGEST THE RISK FOR ISOLD DMGG WINDS AND
PERHAPS SVR HAIL AS THE CONVECTIVE SYSTEM CONTINUES MAINLY E TO ESE
THROUGH EARLY SUN.

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 28025.


...CORFIDI