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000 

WWUS20 KWNS 110037

SEL0

SPC WW 110037

MNZ000-NDZ000-SDZ000-110700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 680

NWS STORM PREDICTION CENTER NORMAN OK

740 PM CDT THU JUL 10 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF WESTERN MINNESOTA

       PARTS OF SOUTHEASTERN NORTH DAKOTA

       PARTS OF NORTHERN SOUTH DAKOTA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 740 PM

UNTIL 200 AM CDT.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE

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

FARGO NORTH DAKOTA TO 45 MILES SOUTH SOUTHWEST OF ABERDEEN SOUTH

DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 677...WW 678...WW 679...



DISCUSSION...SUPERCELLS OVER CENTRAL ND WILL CONTINUE DEVELOPING

E/SE INTO A VERY MOIST AND UNSTABLE AIR MASS.  WITH DEEP LAYER SHEAR

REMAINING FAVORABLE FOR SUPERCELLS...THE THREAT FOR TORNADOES AND

VERY LARGE HAIL/WIND DAMAGE WILL CONTINUE AFTER DARK.



AVIATION...TORNADOES AND 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 28030.





...HALES

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