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000 

WWUS20 KWNS 262344

SEL3

SPC WW 262344

MNZ000-NDZ000-270700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 613

NWS STORM PREDICTION CENTER NORMAN OK

645 PM CDT THU JUN 26 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN MINNESOTA

       CENTRAL AND EASTERN NORTH DAKOTA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 645 PM

UNTIL 200 AM CDT.



HAIL TO 1.5 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 110

STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH

NORTHWEST OF GRAND FORKS NORTH DAKOTA TO 70 MILES SOUTH SOUTHWEST

OF JAMESTOWN NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 610. WATCH NUMBER 610 WILL NOT

BE IN EFFECT AFTER 645 PM CDT. CONTINUE...WW 611...WW 612...



DISCUSSION...SCTD TSTMS/POSSIBLE SUPERCELLS EXPECTED TO PERSIST IN

AREA OF WAA/ASCENT DOWNSTREAM FROM IMPULSE IN MODERATE CYCLONIC WLY

FLOW.  ACTIVITY MAY ORGANIZE INTO A FORWARD /EWD/-PROPAGATING MCS

LATER THIS EVENING...WITH A CONTINUED THREAT FOR SVR WIND/HAIL.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 27035.





...CORFIDI

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