

000 

WWUS20 KWNS 300259

SEL1

SPC WW 300259

KSZ000-NEZ000-300800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 391

NWS STORM PREDICTION CENTER NORMAN OK

1000 PM CDT THU MAY 29 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTH CENTRAL KANSAS

       SOUTH CENTRAL NEBRASKA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1000 PM

UNTIL 300 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 35 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHEAST OF

CONCORDIA KANSAS TO 110 MILES WEST OF CONCORDIA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU1).



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 386. WATCH NUMBER 386 WILL NOT BE IN EFFECT AFTER

1000 PM CDT. CONTINUE...WW 387...WW 388...WW 389...WW 390...



DISCUSSION...TRAINING SEVERE STORMS WILL PERSIST ALONG A SLOW-MOVING

BOUNDARY ACROSS NRN KS/SRN NEB AS RICH MOISTURE FLOWS NWD ON A

STRONG LLJ.  THOUGH CONVECTIVE INHIBITION WILL INCREASE GRADUALLY AS

THE BOUNDARY LAYER COOLS...MODERATE INSTABILITY AND STRONG VERTICAL

SHEAR SHOULD STILL BE SUFFICIENT FOR A COUPLE OF TORNADOES WITH

EMBEDDED SUPERCELL/BOW STRUCTURES.  OTHERWISE...DAMAGING WINDS AND

LARGE HAIL WILL BE LIKELY WITH THE MORE INTENSE STORMS.



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

550. MEAN STORM MOTION VECTOR 26035.





...THOMPSON

