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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

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