WWUS20 KWNS 132015
SEL3
SPC WW 132015
KSZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 663
NWS STORM PREDICTION CENTER NORMAN OK
315 PM CDT SAT OCT 13 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       CENTRAL KANSAS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
1000 PM CDT.

HAIL TO 2 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 65
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH
NORTHEAST OF CONCORDIA KANSAS TO 40 MILES EAST SOUTHEAST OF
MEDICINE LODGE KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 661...WW 662...

DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP SOON IN
THE AREA NEAR PRATT...WHERE VISIBLE SATELLITE IMAGERY SHOWS
DEEPENING CUMULUS ALONG THE SURFACE COLD FRONT.  CONTINUED SURFACE
HEATING IN ADVANCE OF THE FRONT...AND THE APPROACH OF A STRONG
MIDLEVEL TROUGH FROM WRN KS...WILL PROMOTE ADDITIONAL THUNDERSTORM
DEVELOPMENT THROUGH THE AFTERNOON/EVENING ACROSS CENTRAL KS.  LOCAL
VWP/PROFILER OBSERVATIONS SHOW THAT HODOGRAPHS ARE BECOMING MORE
UNIDIRECTIONAL WITH TIME...THOUGH THERE MIGHT BE A SMALL WINDOW OF
OPPORTUNITY FOR A TORNADO IN S CENTRAL KS.  OTHERWISE...CLUSTERS AND
LINE SEGMENTS SHOULD BE THE PRIMARY CONVECTIVE MODE...WITH THE RISK
FOR LARGE HAIL AND DAMAGING WINDS.

AVIATION...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 450. MEAN STORM
MOTION VECTOR 24040.


...THOMPSON