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901 

WWUS20 KWNS 220708

SEL9

SPC WW 220708

MNZ000-NDZ000-SDZ000-221400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 379

NWS STORM PREDICTION CENTER NORMAN OK

210 AM CDT TUE JUN 22 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN MINNESOTA

       EASTERN NORTH DAKOTA

       NORTHEAST SOUTH DAKOTA



EFFECTIVE THIS TUESDAY MORNING FROM 210 AM UNTIL 900 AM CDT.



HAIL TO 1 INCH 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 95

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF

JAMESTOWN NORTH DAKOTA TO 50 MILES WEST SOUTHWEST OF WATERTOWN

SOUTH DAKOTA.  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 374...WW 375...WW

376...WW 377...WW 378...



DISCUSSION...BOWING MCS IN N CNTRL SD/S CNTRL ND EXPECTED TO

CONTINUE ENE...SUPPORTED IN PART BY SHORTWAVE IMPULSE THAT EXITED MT

EARLIER THIS MORNING.  THE STRONGEST PORTION OF THE MCS MAY STRADDLE

THE ND/SD BORDER AREA GIVEN W/E INSTABILITY GRADIENT/WEAK FRONT OVER

REGION.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION

VECTOR 25035.





...CORFIDI

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