

436 

WWUS20 KWNS 121048

SEL3

SPC WW 121048

KSZ000-MOZ000-121500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 573

NWS STORM PREDICTION CENTER NORMAN OK

550 AM CDT SUN JUL 12 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHEAST KANSAS

       NORTHWEST MISSOURI



EFFECTIVE THIS SUNDAY MORNING FROM 550 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 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 50

STATUTE MILES EITHER SIDE OF A LINE FROM 15 MILES WEST SOUTHWEST

OF MANHATTAN KANSAS TO 60 MILES EAST SOUTHEAST OF KANSAS CITY

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.



DISCUSSION...WELL ORGANIZED LINEAR MCS IS EXPECTED TO CONTINUE

MOVING AT 40-50 MPH ACROSS WW THROUGH THE EARLY MORNING ALONG AXIS

OF STRONG INSTABILITY.  ACTIVITY SHOULD TEND TO SHIFT A BIT MORE

SEWD WITH TIME.  STRONGER CORES WITHIN THE LINE MAY BE CAPABLE OF

LARGE HAIL AND ISOLATED DAMAGING WINDS...ALTHOUGH A GREATER THREAT

COULD EVOLVE WITH MORE ORGANIZED STRONG-SEVERE OUTFLOW WINDS GIVEN

THE VERY ORGANIZED NATURE AND FAST MOTION OF THE LINE.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 28040.





...EVANS

