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000 

WWUS20 KWNS 281111

SEL6

SPC WW 281111

NDZ000-281700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 766

NWS STORM PREDICTION CENTER NORMAN OK

615 AM CDT MON JUL 28 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL NORTH DAKOTA



EFFECTIVE THIS MONDAY MORNING FROM 615 AM UNTIL NOON 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST

SOUTHWEST OF WILLISTON NORTH DAKOTA TO 60 MILES EAST NORTHEAST OF

BISMARCK NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



DISCUSSION...BOWING MCS EVOLVING OVER ERN MT EARLY THIS MORNING IS

EXPECTED TO TRACK RAPIDLY ESEWD INTO CENTRAL ND THROUGH THE REST OF

THE MORNING.  AIR MASS FEEDING THIS SYSTEM IS VERY UNSTABLE...AND

ACTIVITY WILL BE AIDED BY SHORTWAVE TROUGH CURRENTLY PROGRESSING

ACROSS MT.  DAMAGING WINDS AND ISOLATED LARGE HAIL SHOULD ACCOMPANY

THESE STORMS.



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 500. MEAN STORM

MOTION VECTOR 29040.





...EVANS

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