

000 

WWUS20 KWNS 172119

SEL0

SPC WW 172119

MNZ000-NDZ000-180500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 410

NWS STORM PREDICTION CENTER NORMAN OK

420 PM CDT SUN JUN 17 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN MINNESOTA

       NORTHEASTERN NORTH DAKOTA



EFFECTIVE THIS SUNDAY AFTERNOON FROM 420 PM UNTIL MIDNIGHT 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 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST OF GRAND FORKS

NORTH DAKOTA TO 55 MILES NORTHEAST OF HIBBING MINNESOTA.  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 407...WW 408...WW 409...



DISCUSSION...RAPID TSTM DEVELOPMENT HAS RECENTLY OCCURRED ALONG WARM

FRONT INVOF GFK.  AMBIENT ENVIRONMENT IS MODERATELY UNSTABLE AND

STRONGLY SHEARED...SUPPORTING SUPERCELLS CAPABLE OF TORNADOES 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 26030.





...MEAD/EVANS

