[BNAWX] Severe Local Storm Watch and Watch Cancellation MSG

[EMWIN Server]

WWUS20 KWNS 231350
SEL7
SPC WW 231350
ARZ000-ILZ000-INZ000-KYZ000-MOZ000-TNZ000-232100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 797
NWS STORM PREDICTION CENTER NORMAN OK
845 AM CDT SAT SEP 23 2006

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

       CENTRAL AND EASTERN ARKANSAS
       SOUTHERN ILLINOIS
       FAR SOUTHWEST INDIANA
       WESTERN KENTUCKY
       SOUTHEAST MISSOURI INCLUDING THE BOOTHEEL
       FAR NORTHWEST TENNESSEE

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 845 AM UNTIL
400 PM CDT.

TORNADOES...HAIL TO 1.5 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 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF
LITTLE ROCK ARKANSAS TO 40 MILES NORTHWEST OF EVANSVILLE INDIANA.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 795. WATCH NUMBER 795 WILL NOT BE IN EFFECT AFTER
845 AM CDT. CONTINUE...WW 796...

DISCUSSION...SQUALL LINE COMPOSED OF SUPERCELLS AND BOW ECHOES WILL
CONTINUE FROM WEST TO EAST ACROSS WW TODAY.  AIR MASS IS ALREADY
MODERATELY UNSTABLE AND WILL UNDERGO FURTHER DESTABILIZATION THROUGH
THE MORNING...WITH INSTABILITY AXIS LIKELY BUILDING NNEWD INTO THE
LOWER OH RIVER VALLEY. OVERALL SCENARIO WILL FAVOR A LINEAR-MODE
WITH THREAT OF DAMAGING WINDS...HOWEVER STRONG LOW LEVEL SHEAR WILL
ALSO REMAIN SUPPORTIVE OF TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25030.


...EVANS


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