SPC Severe Thunderstorm Watch 393

WW 393 SEVERE TSTM KS MO 150040Z – 150700Z

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 393
NWS STORM PREDICTION CENTER NORMAN OK
740 PM CDT THU JUN 14 2012

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

       CENTRAL AND EASTERN KANSAS
       EXTREME NORTHWEST MISSOURI

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 740 PM
UNTIL 200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF
HUTCHINSON KANSAS TO 10 MILES SOUTH OF SAINT JOSEPH MISSOURI.
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 389...WW 390...WW
391...WW 392...

DISCUSSION...A COMPLEX LINE OF THUNDERSTORMS FROM EXTREME SWRN IA
INTO WRN KS CONTAINS A NUMBER OF LEWPS/SMALL SCALE BOW ECHOES
ACCORDING TO RADAR.  THE LINE IS EXPECTED TO MOVE SEWD THIS EVENING
INTO THE LOW LEVEL MOISTURE AND INSTABILITY AXIS OVER KS...ENHANCED
BY A STRENGTHENING LOW LEVEL JET AND ASSOCIATED STRONG CONVERGENCE
AND MASS FLUX INTO THE STORMS.  MODEL GUIDANCE SUGGESTS SOME
SECTIONS OF THE LINE MAY ACCELERATE SEWD TONIGHT WITH POTENTIAL FOR
A MORE WIDESPREAD DAMAGING WIND THREAT DEVELOPING IN ASSOCIATION
WITH A FORWARD PROPAGATING QLCS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 27025.


...WEISS

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via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0393.html