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WWUS20 KWNS 250027

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SPC WW 250027

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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 363

NWS STORM PREDICTION CENTER NORMAN OK

725 PM CDT TUE MAY 24 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EXTREME EASTERN KANSAS

       WEST AND SOUTHWEST MISSOURI



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 725 PM

UNTIL 300 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF KANSAS

CITY MISSOURI TO 25 MILES SOUTH OF MONETT MISSOURI.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU3).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 356...WW 358...WW

360...WW 361...WW 362...



DISCUSSION...BROKEN LINE OF STORMS HAS MOVED NE OFF THE DRYLINE IN

NE OK/ERN KS...AND WILL LIKELY CONTINUE TO PROGRESS EWD/NEWD THROUGH

EARLY TONIGHT IN ADVANCE OF THE DEEPENING MIDLEVEL TROUGH/CYCLONE

OVER KS/OK.  LOW-MIDLEVEL FLOW AND VERTICAL SHEAR WILL INCREASE FROM

W TO E AS THE SYNOPTIC SYSTEM APPROACHES...AND SOME MOISTURE

ADVECTION FROM THE S MAY HELP MAINTAIN WEAK-MODERATE INSTABILITY

DESPITE ONSET OF BOUNDARY LAYER COOLING.  EMBEDDED SUPERCELLS/BOWS

WILL BE CAPABLE OF PRODUCING A FEW TORNADOES...IN ADDITION TO

DAMAGING WINDS/HAIL.  THE NRN EXTENT OF THE THREAT IS SOMEWHAT

UNCERTAIN...GIVEN STABILIZING INFLUENCE OF PRIOR CONVECTION ALONG

THE I-70 CORRIDOR.



AVIATION...TORNADOES AND 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 23030.





...THOMPSON

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