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WWUS20 KWNS 140603

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SPC WW 140603

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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 470

NWS STORM PREDICTION CENTER NORMAN OK

105 AM CDT WED JUL 14 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL AND SOUTHEASTERN NORTH DAKOTA

       FAR NORTH CENTRAL AND NORTHEASTERN SOUTH DAKOTA



EFFECTIVE THIS WEDNESDAY MORNING FROM 105 AM UNTIL 800 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 100 MILES WEST SOUTHWEST OF

JAMESTOWN NORTH DAKOTA TO 35 MILES SOUTH OF FARGO NORTH 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 469...



DISCUSSION...LEAD SUPERCELL IN S CNTRL ND...INITIALLY FORMED ATOP

COLD FRONT...LIKELY WILL CONTINUE E OR SLIGHTLY S OF E INTO WARM

SECTOR MOVING INTO SERN ND LATER THIS MORNING.  COUPLED WITH

STRENGTHENING WSWLY 700 MB FLOW ASSOCIATED WITH JET STREAK

APPROACHING FROM WY...AND CONTINUED INFLOW OF VERY MOIST AIR WITH

30+ KT SLY LLJ...SETUP MAY YIELD A STRONG TORNADO OR TWO...IN

ADDITION TO VERY LARGE HAIL/DMGG WIND.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 27035.





...CORFIDI

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