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WWUS20 KWNS 150553

SEL6

SPC WW 150553

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 616

NWS STORM PREDICTION CENTER NORMAN OK

1255 AM CDT SUN AUG 15 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST MISSOURI



EFFECTIVE THIS SUNDAY MORNING FROM 1255 AM UNTIL 700 AM CDT.



HAIL TO 1 INCH 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 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH

NORTHWEST OF JOPLIN MISSOURI TO 35 MILES NORTH OF WEST PLAINS

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...SMALL FORWARD-PROPAGATING MCS ALONG THE KS/MO BORDER

HAS EVOLVED FROM EARLIER STORMS IN SRN KS.  WHILE AREA VWP DATA IS

NOT VERY IMPRESSIVE FOR SUPPORTING RAPID FORWARD-DEVELOPMENT...

PRESENCE OF DEEP EML ATOP SHALLOW COOL OUTFLOW FROM EARLIER

STORMS...RICH MOISTURE ABOVE THE OUTFLOW LAYER...AND N/S ORIENTATION

OF STORMS ALONG THE KS/MO BORDER /PERPENDICULAR TO MODEST MEAN WLY

FLOW/ SUGGEST POTENTIAL FOR LOCALLY DMGG WIND GUSTS/WET MICROBURSTS.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

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

VECTOR 28025.





...CORFIDI

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