WATCHES: Tornado Watch Number 410

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

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