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WWUS20 KWNS 210253

SEL9

SPC WW 210253

ARZ000-KSZ000-MOZ000-OKZ000-TXZ000-211000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 529

NWS STORM PREDICTION CENTER NORMAN OK

950 PM CDT MON JUN 20 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST ARKANSAS

       SOUTHEAST KANSAS

       SOUTHWEST MISSOURI

       CENTRAL AND EASTERN OKLAHOMA

       NORTH TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 950 PM UNTIL

500 AM CDT.



HAIL TO 2 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH

NORTHWEST OF SPRINGFIELD MISSOURI TO 25 MILES SOUTHEAST OF

MINERAL WELLS TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 525...WW 526...WW

527...WW 528...



DISCUSSION...TSTMS EXPECTED TO CONTINUE FORMING ALONG AND POSSIBLY

AHEAD OF MERGING COLD FRONT/DRY LINE IN SE KS...OK...AND POSSIBLY NW

TX.  FARTHER S...STORM CLUSTER NOW W OF DFW EXPECTED TO MOVE/DEVELOP

MAINLY EWD AHEAD OF FRONT IN N TX.  CONVECTION WILL BE AIDED BY WEAK

ASCENT ASSOCIATED WITH GLANCING INFLUENCE OF POTENT CNTRL KS VORT

LOBE...AND BY NOCTURNAL STRENGTHENING OF FAIRLY MOIST LLJ.  WHILE

SETUP COULD SUPPORT A BRIEF TORNADO OR TWO...THE MAIN SVR THREATS

SHOULD BE SCTD POCKETS OF LOCALLY DMGG WIND AND SVR HAIL FROM

LOOSELY ORGANIZED SUSTAINED STORMS/OCCASIONAL SUPERCELLS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 22030.





...CORFIDI

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