

039 

WWUS20 KWNS 140111

SEL8

SPC WW 140111

KSZ000-MOZ000-140700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 658

NWS STORM PREDICTION CENTER NORMAN OK

810 PM CDT MON SEP 13 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN KANSAS

       WESTERN AND CENTRAL MISSOURI



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 810 PM UNTIL

200 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 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHEAST

OF CHILLICOTHE MISSOURI TO 65 MILES SOUTHWEST OF MANHATTAN

KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 656...WW 657...



DISCUSSION...EXISTING STORM/SUPERCELL COMPLEXES OVER NE KS/NW MO

EXPECTED TO CONTINUE GENERALLY SSE.  ALTHOUGH BOUNDARY LAYER WILL

SLOWLY STABILIZE WITH NIGHTFALL...CONTINUED DEVELOPMENT MAY BE

SUPPORTED/POSSIBLY ENHANCED BY EXPECTED MODEST NOCTURNAL

STRENGTHENING/VEERING OF LLJ.  SUFFICIENT INSTABILITY/SHEAR APPEAR

PRESENT PER 00Z TOP RAOB AND AREA VWP/PROFILER DATA TO SUPPORT

EMBEDDED BOWING STRUCTURES WITH HIGH WIND...HAIL...AND POSSIBLY A

BRIEF TORNADO.



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 33025.





...CORFIDI

