

280 

WWUS20 KWNS 092153

SEL4

SPC WW 092153

KSZ000-100100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 124

NWS STORM PREDICTION CENTER NORMAN OK

455 PM CDT THU APR 9 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL KANSAS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 455 PM UNTIL

800 PM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 30 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF

MEDICINE LODGE KANSAS TO 35 MILES EAST OF WICHITA KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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...CONTINUE...WW 123...



DISCUSSION...ADDITIONAL STORM DEVELOPMENT IS EXPECTED ALONG THE HWY

54 CORRIDOR ACROSS SRN KS AS THE DRY SURGE FROM OK COLLIDES WITH THE

E-W FRONT IN KS...NEAR AND E OF THE SURFACE AND MID LEVEL LOW

CENTER.  THOUGH LOW-LEVEL MOISTURE IS MARGINAL...STEEP LAPSE RATES

AND STRONG VERTICAL VORTICITY ALONG THE BOUNDARY COULD SUPPORT A

COUPLE OF SPIN-UP TORNADOES IN THE NEXT 2-3 HOURS.  ISOLATED LARGE

HAIL AND DOWNBURST WINDS WILL ALSO BE POSSIBLE WITH THE STRONGER

STORMS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 27010.





...THOMPSON

