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000 

WWUS20 KWNS 170813

SEL5

SPC WW 170813

MNZ000-NDZ000-171500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 405

NWS STORM PREDICTION CENTER NORMAN OK

310 AM CDT SUN JUN 17 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WEST CENTRAL MINNESOTA

       SOUTHEAST NORTH DAKOTA



EFFECTIVE THIS SUNDAY MORNING FROM 310 AM UNTIL 1000 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 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 75 MILES WEST OF FARGO NORTH

DAKOTA TO 30 MILES EAST SOUTHEAST OF DETROIT LAKES MINNESOTA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 403...WW 404...



DISCUSSION...SUSTAINED UPDRAFTS/SUPERCELLS EXPECTED TO PERSIST FOR

THE NEXT FEW HOURS ALONG NERN FRINGE OF ADVANCING EML IN LOW LEVEL

WARM ADVECTION ZONE OVER SE ND.  COUPLED WITH STRONG LOW TO MID

LEVEL DIRECTIONAL SHEAR /PER AREA VWP DATA/ AND NWD PUSH OF LOW

LEVEL MOISTURE/INSTABILITY AXIS WITH NEARBY SFC WARM FRONT...SETUP

MAY SUPPORT A COUPLE TORNADOES IN ADDITION TO LARGE HAIL AS THE

STORMS MOVE GENERALLY EWD...AND DEVELOP SLIGHTLY N OF E WITH TIME.



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

500. MEAN STORM MOTION VECTOR 28025.





...CORFIDI

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