

000 

WWUS20 KWNS 110448

SEL9

SPC WW 110448

MNZ000-NDZ000-SDZ000-111200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 379

NWS STORM PREDICTION CENTER NORMAN OK

1150 PM CDT SUN JUN 10 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST CENTRAL MINNESOTA

       SOUTHERN NORTH DAKOTA

       NORTHERN AND EASTERN SOUTH DAKOTA



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1150 PM UNTIL

700 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST

NORTHWEST OF MOBRIDGE SOUTH DAKOTA TO 15 MILES SOUTHEAST OF

ALEXANDRIA MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 378...



DISCUSSION...SCTD TSTMS...INCLUDING MULTICELLS AND MARGINAL

SUPERCELLS...EXPECTED TO PERSIST IN WNW/ESE-ORIENTED WARM ADVECTION

ZONE ALONG MAIN AXIS OF WW.  QUALITY OF UPSTREAM CAPE AND OVERNIGHT

STRENGTHENING OF LLJ SUGGEST SUFFICIENT THREAT FOR LARGE HAIL AND

POSSIBLY LOCALLY DAMAGING WIND TO WARRANT WW ISSUANCE.  ACTIVITY MAY

ALSO BE ENHANCED BY UPLIFT ABOVE CONVECTIVE OUTFLOW FROM EARLIER WRN

MN MCS.



AVIATION...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 550. MEAN STORM

MOTION VECTOR 25020.





...CORFIDI

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