

000 

WWUS20 KWNS 040024

SEL0

SPC WW 040024

KSZ000-OKZ000-040600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 440

NWS STORM PREDICTION CENTER NORMAN OK

725 PM CDT TUE JUN 3 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN KANSAS

       EXTREME NORTH CENTRAL AND NORTHEAST OKLAHOMA



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 725 PM

UNTIL 100 AM CDT.



TORNADOES...HAIL TO 3 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 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH OF MEDICINE

LODGE KANSAS TO 25 MILES NORTH NORTHEAST OF CHANUTE KANSAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 435...WW 437...WW

438...WW 439...



DISCUSSION...SEVERAL CONVECTIVE THREATS WILL EVOLVE THROUGH THE

EVENING/EARLY OVERNIGHT PERIOD ACROSS KS/OK.  AN INTENSE SUPERCELL

IN NW OK WILL LIKELY PERSIST FOR SEVERAL MORE HOURS IN THE MOIST

AXIS N OF A STALLED BOUNDARY.  MEANWHILE...ADDITIONAL STORMS WILL

LIKELY DEVELOP ALONG SEVERAL BOUNDARY SEGMENTS IN NRN OK AND ERN KS.

 BOUNDARY LAYER DEWPOINTS NEAR 70 F AND BACKING/STRENGTHENING

LOW-LEVEL FLOW THIS EVENING COULD SUPPORT SUPERCELLS WITH A COUPLE

OF TORNADOES...AS WELL AS VERY LARGE HAIL AND DAMAGING WINDS.

CONVECTION MAY EVENTUALLY EVOLVE INTO ONE OR MORE SMALL MCS/S AS A

RESULT OF STORM MERGERS LATER TONIGHT.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 27025.





...THOMPSON

