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000 

WWUS20 KWNS 030724

SEL6

SPC WW 030724

NDZ000-SDZ000-031400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 476

NWS STORM PREDICTION CENTER NORMAN OK

220 AM CDT TUE JUL 3 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN AND SOUTHERN NORTH DAKOTA

       NORTHERN SOUTH DAKOTA



EFFECTIVE THIS TUESDAY MORNING FROM 220 AM UNTIL 900 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES EITHER SIDE OF A LINE FROM 40 MILES SOUTH SOUTHWEST

OF GARRISON NORTH DAKOTA TO 85 MILES EAST SOUTHEAST OF JAMESTOWN

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.



OTHER WATCH INFORMATION...CONTINUE...WW 475...



DISCUSSION...BOWING LINEAR MCS IS MOVING ESEWD 35-40 KT ACROSS WRN

ND...AND IS EXPECTED TO CONTINUE INTO CENTRAL/ERN ND NEXT SEVERAL

HOURS WHERE LOW LEVEL MOISTURE/INSTABILITY AXIS IS LOCATED.  MCS

MOTION VECTORS SUGGEST SYSTEM MAY TURN MORE SEWD THIS MORNING AND

AFFECT PARTS OF FAR NRN SD AFTER 09-10Z.  DAMAGING WIND GUSTS WILL

BE THE PRIMARY THREAT WITH THE BOWING MCS.  OTHER STRONG/SEVERE

STORMS ARE SPREADING EWD FROM EAST CENTRAL MT TOWARD SWRN ND WITH

ADDITIONAL THREAT FOR LARGE HAIL AS WELL AS DAMAGING WIND GUSTS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 29040.





...WEISS

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