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460 

WWUS20 KWNS 232025

SEL5

SPC WW 232025

IAZ000-MOZ000-240300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 705

NWS STORM PREDICTION CENTER NORMAN OK

325 PM CDT SAT OCT 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN IOWA

       NORTHERN MISSOURI



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 325 PM UNTIL

1000 PM 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 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES EAST SOUTHEAST OF

KANSAS CITY MISSOURI TO 15 MILES EAST NORTHEAST OF KNOXVILLE

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 704...



DISCUSSION...TSTMS ARE DEVELOPING THIS AFTERNOON FROM THE VICINITY

OF A WARM FRONT ALONG THE IA/MO BORDER SWD TO NEAR KANSAS CITY

WITHIN A MOIST AND UNSTABLE AIR MASS WITH MLCAPE VALUES OF 1000-1500

J/KG.  SUSTAINED LOW-LEVEL WAA ALONG A SWLY 40+ KT LLJ SHOULD

SUPPORT FURTHER STORM INTENSIFICATION LATE THIS AFTERNOON INTO

EVENING.  AREA PROFILER AND VWP DATA INDICATE VERTICALLY-VEERING

WIND PROFILES WITH SUFFICIENT LOW AND DEEP-LAYER SHEAR FOR

SUPERCELLS CAPABLE OF LARGE HAIL...DAMAGING WINDS AND A FEW

TORNADOES.



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 24035.





...MEAD

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