

288 

WWUS20 KWNS 140839

SEL4

SPC WW 140839

KSZ000-OKZ000-141400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 164

NWS STORM PREDICTION CENTER NORMAN OK

340 AM CDT SAT APR 14 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EXTREME SOUTHEAST KANSAS

       NORTHEAST OKLAHOMA



EFFECTIVE THIS SATURDAY MORNING FROM 340 AM UNTIL 900 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 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTHWEST OF PONCA

CITY OKLAHOMA TO 10 MILES NORTHEAST OF GROVE OKLAHOMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 163. WATCH NUMBER 163 WILL NOT BE IN EFFECT AFTER

340 AM CDT.



DISCUSSION...CLUSTER OF STORMS WITH EMBEDDED SUPERCELLS WILL LIKELY

PERSIST THROUGH THE EARLY MORNING HOURS IN CONJUNCTION WITH

LOW-LEVEL WAA AND A FEED OF MOISTURE AND MODERATE INSTABILITY FROM

THE S/SW.  STRONG LOW-LEVEL SHEAR AND INSTABILITY ROOTED AT OR VERY

NEAR THE SURFACE WILL SUPPORT THE RISK FOR A COUPLE OF

TORNADOES...AS WELL AS LARGE HAIL AND ISOLATED DAMAGING WINDS.



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 25025.





...THOMPSON

