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WWUS20 KWNS 070219

SEL2

SPC WW 070219

IAZ000-KSZ000-MOZ000-NEZ000-071000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 142

NWS STORM PREDICTION CENTER NORMAN OK

920 PM CDT THU MAY 6 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHWEST IOWA

       LARGE PART OF NORTHEAST KANSAS

       NORTHWEST MISSOURI

       PARTS OF SOUTHEAST NEBRASKA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 920 PM

UNTIL 500 AM 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES EAST

SOUTHEAST OF EMPORIA KANSAS TO 15 MILES NORTHWEST OF SHENANDOAH

IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 141...



DISCUSSION...THUNDERSTORMS DEVELOPING IN STRONG WARM ADVECTION ALONG

AND N OF WARM FRONT CURRENTLY EXTENDING EWD ACROSS CENTRAL KS TO WRN

MO.  AS UPPER TROUGH APPROACHES AND LOW LEVEL JET

INCREASES...CONDITIONS WILL BECOME MORE FAVORABLE FOR ELEVATED

SUPERCELLS ACROSS NERN KS INTO NWRN MO.  PRIMARY THREAT EXPECTED TO

BE LARGE HAIL...HOWEVER DAMAGING WINDS ARE POSSIBLE WITH ANY

SUPERCELL AND LINE SEGMENTS THAT DEVELOP. ADDITIONAL ELEVATED

STRONG/SEVERE STORMS ALONG CENTRAL NE/KS BORDER WILL TRACK ENEWD

ACROSS SERN NE INTO SWRN IA OVERNIGHT WITH POTENTIAL 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 500. MEAN STORM

MOTION VECTOR 24035.





...HALES

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