

983 

WWUS20 KWNS 132205

SEL9

SPC WW 132205

COZ000-KSZ000-NMZ000-OKZ000-TXZ000-140600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 399

NWS STORM PREDICTION CENTER NORMAN OK

400 PM MDT SAT JUN 13 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN COLORADO

       WESTERN AND SOUTHWEST KANSAS

       NORTHEAST NEW MEXICO

       FAR WESTERN OKLAHOMA

       THE TEXAS PANHANDLE



EFFECTIVE THIS SATURDAY AFTERNOON FROM 400 PM UNTIL MIDNIGHT MDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH NORTHWEST OF

LIMON COLORADO TO 45 MILES SOUTHEAST OF AMARILLO TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU9).



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 397...WW 398...



DISCUSSION...SUPERCELLS EXPECTED TO DEVELOP EWD OFF THE HIGHER

TERRAIN OVER THE NEXT FEW HOURS AS MOIST ESE POST-FRONTAL FLOW

PERSISTS ALONG AND N OF STALLING FRONT.  COUPLED WITH LARGE SCALE

ASCENT ASSOCIATED WITH GLANCING INFLUENCE OF PASSING AZ/NM UPR

DISTURBANCES...SETUP APPEARS FAVORABLE FOR VERY LARGE HAIL/HIGH WIND

AND A FEW TORNADOES.  SOME OF THE STORMS LIKELY WILL MERGE INTO ONE

OR TWO E TO ESE-MOVING MCSS LATER TONIGHT...THAT MAY CONTINUE TO

PRODUCE SVR HAIL/WIND.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 26025.





...CORFIDI

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