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971 

WWUS20 KWNS 152023

SEL5

SPC WW 152023

KSZ000-160300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 665

NWS STORM PREDICTION CENTER NORMAN OK

320 PM CDT WED SEP 15 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH-CENTRAL AND SOUTHEAST KANSAS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 320 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHEAST OF

WICHITA KANSAS TO 55 MILES NORTH NORTHEAST OF WICHITA KANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 664...



DISCUSSION...POTENTIALLY VOLATILE ENVIRONMENT HAS DEVELOPED ALONG

OUTFLOW/WARM FRONT AND DRYLINE INTERSECTION WEST OF ICT LATE THIS

AFTERNOON. EXPECT STRONG HEATING AND CONTINUING LIFT NEAR SURFACE

LOW AND BOUNDARIES TO CONTRIBUTE TO ROBUST TSTM DEVELOPMENT OVER THE

NEXT FEW HOURS. GIVEN MAGNITUDE OF INSTABILITY FEEDING THIS

CONVECTION /MLCAPE AOA 3000 J PER KG/...SEVERE STORMS WITH VERY

LARGE HAIL AND HIGH WINDS APPEAR LIKELY. DEEP SHEAR WILL BE

SUPPORTIVE OF STORM ROTATION WHILE BACKED LOW LEVEL FLOW NEAR THE

OUTFLOW BOUNDARY/WARM FRONT ACTS TO ENHANCE SR INFLOW AND THE

POSSIBILITY OF PERSISTENT AND STRONG MESOCYCLONES. TORNADO POTENTIAL

WILL LIKELY BE GREATEST FOR DISCRETE STORMS TRACKING PREFERENTIALLY

ALONG THE TIGHT THERMAL GRADIENT SITUATED ACROSS SCNTRL KS OVER THE

NEXT FEW HOURS.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 28025.





...CARBIN

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