

000 

WWUS20 KWNS 240227

SEL6

SPC WW 240227

MNZ000-NDZ000-241000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 446

NWS STORM PREDICTION CENTER NORMAN OK

925 PM CDT SAT JUN 23 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHWEST MINNESOTA

       NORTHEAST NORTH DAKOTA



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 925 PM

UNTIL 500 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 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST NORTHWEST OF

DEVILS LAKE NORTH DAKOTA TO 75 MILES EAST NORTHEAST OF BEMIDJI

MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



DISCUSSION...CLUSTER OF SUPERCELLS WITH A HISTORY OF TORNADOES OVER

SWRN MB ARE EXPECTED TO CONTINUE SEWD OVERNIGHT INTO PORTIONS OF

NERN ND AND NWRN MN.  COMBINATION OF MLCAPES OF 1500-2500 J/KG AND

MODERATELY STRONG LOW AND DEEP-LAYER SHEAR ALONG AND S OF WARM

FRONT/OUTFLOW BOUNDARY SHOULD MAINTAIN STORM INTENSITY WITH A THREAT

OF A FEW TORNADOES IN ADDITION TO LARGE HAIL AND DAMAGING WINDS.

ACTIVITY MAY GROW UPSCALE INTO AN MCS EARLY SUNDAY MORNING WITH A

CONTINUED THREAT OF DAMAGING WINDS AND LARGE HAIL.



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 29025.





...MEAD/HALES

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