Tornado Watch 293

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 293
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM CDT SAT MAY 10 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHWEST ARKANSAS
SOUTHEAST KANSAS
SOUTHWEST MISSOURI
NORTHEAST OKLAHOMA
EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1130 AM UNTIL
700 PM CDT.
TORNADOES...HAIL TO 2 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 110 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF
BARTLESVILLE OKLAHOMA TO 50 MILES NORTHEAST OF HARRISON ARKANSAS.
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 292
...
DISCUSSION...NUMEROUS ELEVATED STORMS WILL OVERSPREAD SOME OF THE
WATCH AREA THROUGH EARLY AFTERNOON WITHIN INTENSIFYING LOW LEVEL
WARM ADVECTION REGIME AHEAD OF AMPLIFYING LARGE SCALE PATTERN. MOST
GUIDANCE SUPPORT RAPID NEAR-SURFACE-BASED DESTABILIZATION IN THE
WAKE OF THIS INITIAL ROUND OF ELEVATED CONVECTION AND ADDITIONAL
STORMS ARE ILKLEY TO FORM NEAR THE SURFACE LOW AND WARM FRONT BY
MID-LATE AFTERNOON. DEEP-LAYER SHEAR...ALREADY SUFFICIENT FOR
UPDRAFT ROTATION AND HAIL PRODUCTION...WILL STRENGTHEN FURTHER
COINCIDENT WITH THE INCREASE IN LARGE SCALE ASCENT.
FURTHERMORE...STRONG LOW LEVEL SRH NEAR THE LOW AND ALONG THE WARM
FRONT WILL BECOME INCREASINGLY FAVORABLE FOR LOW LEVEL AND
PERSISTENT STORM ROTATION AND POSSIBLE TORNADOES...ESPECIALLY LATER
THIS AFTERNOON.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 26030.
...CARBIN