SPC Tornado Watch 347

WW 347 TORNADO KS OK TX 032340Z – 040700Z


URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 347
NWS STORM PREDICTION CENTER NORMAN OK
640 PM CDT SUN JUN 3 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

       FAR SOUTHERN KANSAS
       WESTERN AND NORTHERN OKLAHOMA
       NORTHEASTERN TEXAS PANHANDLE

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 640 PM UNTIL
200 AM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH OF LIBERAL
KANSAS TO 55 MILES NORTHEAST OF CHANDLER OKLAHOMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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 344...WW 345...WW 346...

DISCUSSION...TSTMS EXPECTED TO INCREASE OVER THE NEXT FEW HOURS
INVOF WEAK W-E FRONT OVER NRN OK AND PERHAPS FAR SRN KS...AND INVOF
NW-MOVING OUTFLOW BOUNDARY/MOISTURE GRADIENT IN THE NE TX PANHANDLE.
 ACTIVITY WILL BE SUPPORTED BY STRENGTHENING SSWLY LLJ...AND
POSSIBLY BY ASCENT ASSOCIATED WITH UPR IMPULSE DRIFTING ESE FROM SW
KS.  DEEP WNWLY SHEAR WILL REMAIN COMPARATIVELY MODEST...AROUND 30
KTS...BUT SUFFICIENT FOR SUSTAINED STORMS/SUPERCELLS.  COUPLED
QUALITY OF MOISTURE...STEEP LOW TO MID LVL LAPSE RATES...AND LOW LVL
DIRECTIONAL SHEAR ASSOCIATED WITH LLJ...POTENTIAL WILL EXIST FOR
VERY LARGE HAIL...HIGH WIND...AND TORNADOES.  THE STORMS SHOULD
EVOLVE INTO A COUPLE OF CLUSTERS LATER TNGT/EARLY MON...WITH
PREDOMINANT MOTION EXPECTED TO BE SE TO POSSIBLY SSEWD.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 29025.


...CORFIDI

via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0347.html