Tornado Watch 348

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 348
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT SAT MAY 24 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
LARGE PART OF CENTRAL AND EASTERN SOUTH DAKOTA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 2.5 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHWEST OF
MOBRIDGE SOUTH DAKOTA TO 55 MILES SOUTH OF CHAMBERLAIN SOUTH
DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 346
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WW 347
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DISCUSSION...STRONG TROUGH/MID LEVEL JET MAX ROTATING NEWD ACROSS
SD. AIR MASS IS RAPIDLY DESTABILIZING NWD AHEAD OF COLD FRONT WRN
SD. THUNDERSTORMS WILL INCREASE IN NUMBER/INTENSITY WITH POTENTIAL
FOR SUPERCELLS. LARGE HAIL AND POSSIBLE TORNADOS PARTICULARLY
ASSOCIATED WITH ANY SUPERCELL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23040.
...HALES