[BNAWX] Severe Local Storm Watch and Watch Cancellation MSG

[EMWIN Server]

WWUS20 KWNS 221414
SEL6
SPC WW 221414
ARZ000-MOZ000-MSZ000-TNZ000-230000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 786
NWS STORM PREDICTION CENTER NORMAN OK
910 AM CDT FRI SEP 22 2006

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

       CENTRAL AND NORTHERN ARKANSAS
       MISSOURI BOOTHEEL
       NORTHWESTERN MISSISSIPPI
       WESTERN TENNESSEE

EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 910 AM UNTIL 700
PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE 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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTH OF FORT SMITH
ARKANSAS TO 30 MILES SOUTH SOUTHEAST OF DYERSBURG TENNESSEE.  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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 785. WATCH NUMBER 785 WILL NOT BE IN EFFECT AFTER
910 AM CDT.

DISCUSSION...EXTREME SHEAR WILL REMAIN IN PLACE ACROSS THE AREA
THROUGH TONIGHT AS LARGE UPPER LOW PERSISTS ACROSS THE CENTRAL/NRN
PLAINS.  SURFACE ANALYSES INDICATE SURFACE BOUNDARY DELINEATING VERY
MOIST/TROPICAL BOUNDARY LAYER AIR EXTENDING WSWWD FROM SWRN TN INTO
W-CENTRAL AR/SERN OK THIS MORNING.  BOUNDARY MAY LIFT NWD AND BECOME
MORE DIFFUSE THROUGH THE AFTERNOON.  HEATING INTO THE LOWER 80S WILL
ALLOW A MODERATELY UNSTABLE AND VERY WEAKLY CAPPED AIR MASS TO
DEVELOP LATE THIS MORNING.  STORMS WILL LIKELY CONTINUE DEVELOPING
AND MOVE QUICKLY ENEWD ACROSS THE REGION INTO THE EVENING.  PRESENCE
OF SURFACE BOUNDARY...ALONG WITH O-1 KM SRH IN EXCESS OF 400 M2/S2
AND LOW LCLS...WILL SUPPORT A THREAT OF STRONG TORNADOES AS
SUPERCELLS INTENSIFY THROUGH THE DAY.

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 25035.


...EVANS
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