

000 

WWUS20 KWNS 230216

SEL9

SPC WW 230216

KSZ000-NEZ000-OKZ000-231000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 339

NWS STORM PREDICTION CENTER NORMAN OK

915 PM CDT THU MAY 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL KANSAS

       SOUTH CENTRAL NEBRASKA

       NORTH CENTRAL OKLAHOMA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 915 PM

UNTIL 500 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES WEST OF GRAND ISLAND

NEBRASKA TO 45 MILES SOUTH OF ENID OKLAHOMA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU9).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 336. WATCH NUMBER 336 WILL NOT BE IN EFFECT AFTER

915 PM CDT. CONTINUE...WW 335...WW 337...



DISCUSSION...TSTMS CLUSTERS/SUPERCELLS NOW IN NW/N CNTRL KS EXPECTED

TO PERSIST AND MOVE/DEVELOP NNE AS STRONG/MOIST SLY LLJ CONTINUES E

OF CLUSTER AND IMPINGES ON WNW/ESE-ORIENTED STATIONARY FRONT.  MORE

ISOLD STORMS/SUPERCELLS SHOULD ALSO PERSIST FARTHER S...ALONG AND

AHEAD OF WAVY DRY LINE EXTENDING SSW INTO THE NE TX PANHANDLE.  LOW

LCLS AND STRENGTH OF LOW-LVL SHEAR SUGGEST CONTINUED RISK FOR

TORNADOES OVERNIGHT...DESPITE INCREASING CINH AND INCREASINGLY

COMPLEX STORM MODE.  A FEW ADDITIONAL SVR STORMS MAY FORM IN AREA OF

ENHANCED WAA ACROSS S CNTRL/SE KS INTO NE OK.



AVIATION...TORNADOES AND 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

500. MEAN STORM MOTION VECTOR 21530.





...CORFIDI

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