

698 

WWUS20 KWNS 121945

SEL4

SPC WW 121945

KSZ000-OKZ000-TXZ000-130300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 304

NWS STORM PREDICTION CENTER NORMAN OK

245 PM CDT SAT JUN 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST KANSAS

       OKLAHOMA PANHANDLE

       NORTHEAST TEXAS PANHANDLE



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 3 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 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH SOUTHEAST OF

BORGER TEXAS TO 70 MILES NORTH NORTHEAST OF DODGE CITY KANSAS.

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...CONTINUE...WW 301...WW 302...WW 303...



DISCUSSION...STORMS ARE INITIATING ALONG SHARP COLD FRONT STALLED

ACROSS THE NORTHWEST TX PNHDL ATTM. VERY HOT AND UNSTABLE CONDITIONS

SHOULD CONTINUE TO PROMOTE ROBUST DEVELOPMENT ALONG THIS

BOUNDARY...WHICH EXTENDS NEWD INTO SWRN KS...THROUGH THE AFTERNOON

AND INTO THE EVENING. STORM MOTIONS MAY TAKE SOME CELLS NWD ACROSS

THE BOUNDARY AND INTO MORE STABLE SURFACE-BASED AIRMASS...INHIBITING

LOW LEVEL ROTATION FROM REACHING THE SURFACE. HOWEVER...ANY CELLS

THAT TRACK ALONG OR NEAR THE WARM SIDE OF THE BOUNDARY FROM NRN TX

PNHDL NEWD TOWARD DDC AREA...WILL HAVE ACCESS TO BOTH HIGH

INSTABILITY AND A SOURCE OF STRONG LOW LEVEL VORTICITY FAVORABLE FOR

TORNADOGENESIS. GIVEN MAGNITUDE OF INSTABILITY AND EFFECTIVE SHEAR

ACROSS THE ENTIRE AREA...LARGE HAIL WILL ALSO BE QUITE LIKELY.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 19025.





...CARBIN

