

825 

WWUS20 KWNS 140241

SEL2

SPC WW 140241

SDZ000-140800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 582

NWS STORM PREDICTION CENTER NORMAN OK

945 PM CDT MON JUL 13 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND WESTERN SOUTH DAKOTA



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 945 PM UNTIL

300 AM CDT.



TORNADOES...HAIL TO 2 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 75 STATUTE

MILES EAST AND WEST OF A LINE FROM 85 MILES NORTH NORTHWEST OF

PIERRE SOUTH DAKOTA TO 75 MILES SOUTH SOUTHEAST OF PHILIP SOUTH

DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 577...WW 580...WW 581...



DISCUSSION...SCATTERED INTENSE AND ISOLATED SUPERCELL THUNDERSTORMS

PERSIST ACROSS PARTS OF SD THIS EVENING.  THESE STORMS WILL REMAIN

CAPABLE OF LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES FOR

SEVERAL MORE HOURS.  EVENTUALLY...STORMS MAY MERGE INTO A MORE

ORGANIZED SQUALL LINE WITH AN ENHANCED THREAT OF DAMAGING WINDS.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 27035.





...HART

