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364 

WWUS20 KWNS 181354

SEL0

SPC WW 181354

MOZ000-182000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 490

NWS STORM PREDICTION CENTER NORMAN OK

855 AM CDT SUN JUL 18 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL MISSOURI



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 855 AM UNTIL 300

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 NORTH AND SOUTH OF A LINE FROM 50 MILES WEST

SOUTHWEST OF FORT LEONARD WOOD MISSOURI TO 65 MILES SOUTHEAST OF

VICHY MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 489...



DISCUSSION...A LARGE MCS CONTINUES TO TRACK SOUTHEASTWARD ACROSS

PARTS OF MO/IL...WITH WESTERN FLANK OF STORMS SPREADING INTO WATCH

AREA.  VERY MOIST/UNSTABLE CONDITIONS COMBINED WITH SOUTHWESTERLY

LOW LEVEL WINDS WILL HELP TO MAINTAIN INTENSITY TO THIS PORTION OF

THE CONVECTION WITH A RISK OF DAMAGING WINDS AND HAIL THROUGH THE

MORNING AND EARLY AFTERNOON.



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 500. MEAN STORM

MOTION VECTOR 32025.





...HART

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