WATCHES: Tornado Watch Number 389

WWUS20 KWNS 121901
SEL9
SPC WW 121901
NDZ000-SDZ000-130200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 389
NWS STORM PREDICTION CENTER NORMAN OK
200 PM CDT TUE JUN 12 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

LARGE PART OF CENTRAL NORTH DAKOTA
LARGE PART OF CENTRAL SOUTH DAKOTA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 200 PM UNTIL
900 PM CDT.

TORNADOES...HAIL TO 2.5 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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 70 MILES NORTHEAST OF MINOT
NORTH DAKOTA TO 80 MILES SOUTH SOUTHEAST OF PHILIP SOUTH DAKOTA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).

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 384...WW 385...WW
386...WW 387...WW 388...

DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INTENSIFY ALONG/AHEAD OF
N/S FRONTAL ZONE THRU WRN DAKOTAS. WITH MLCAPES INCREASING TO
2500J/KG AND LOW LEVEL SHEAR OF 20KT...SUPERCELLS ARE LIKELY. IN
ADDITION TO LARGE HAIL/DAMAGING WINDS...TORNADOES ARE POSSIBLE WITH
ANY SUPERCELL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 21025.

..HALES

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