WATCHES: Tornado Watch Number 956

WWUS20 KWNS 270605
SEL6
SPC WW 270605
ARZ000-MOZ000-OKZ000-271300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 956
NWS STORM PREDICTION CENTER NORMAN OK
1205 AM CST SAT DEC 27 2008

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

NORTHWEST ARKANSAS
CENTRAL AND SOUTHWEST MISSOURI
EAST CENTRAL OKLAHOMA

EFFECTIVE THIS SATURDAY MORNING FROM 1205 AM UNTIL 700 AM CST.

TORNADOES...HAIL TO 1 INCH 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 COLUMBIA
MISSOURI TO 50 MILES SOUTH SOUTHWEST OF POTEAU OKLAHOMA. 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.

OTHER WATCH INFORMATION...CONTINUE...WW 955...

DISCUSSION...ISOLATED THUNDERSTORMS MAY FORM DURING THE NEXT FEW
HOURS WITHIN THE BROAD WARM SECTOR FROM ERN OK NNEWD INTO NW AR AND
MO. THE 05Z SGF SOUNDING APPEARS TO BE REPRESENTATIVE OF THE OPEN
WARM SECTOR WITH VERY STRONG LOW-LEVEL SHEAR AND MUCAPE OF 750-1000
J/KG...AND SUBSTANTIAL MOISTENING HAS OCCURRED SINCE 00Z IN THE
850-700 MB LAYER. PROFILES WILL REMAIN FAVORABLE OVERNIGHT FOR
SUPERCELLS AND SMALL BOWING SEGMENTS...WITH AN ATTENDANT THREAT FOR
A COUPLE OF TORNADOES...DAMAGING WINDS...AND ISOLATED LARGE HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 23045.

...THOMPSON

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