[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 180631
SEL8
SPC WW 180631
ARZ000-MOZ000-MSZ000-TNZ000-181400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 718
NWS STORM PREDICTION CENTER NORMAN OK
130 AM CDT THU OCT 18 2007

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

       EASTERN ARKANSAS
       THE MISSOURI BOOTHEEL
       NORTHERN MISSISSIPPI
       WESTERN TENNESSEE

EFFECTIVE THIS THURSDAY MORNING FROM 130 AM UNTIL 900 AM CDT.

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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF
DYERSBURG TENNESSEE TO 25 MILES SOUTHWEST OF OXFORD MISSISSIPPI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).

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 715...WW 716...WW 717...

DISCUSSION...NE AR SQLN IS ON LEADING EDGE OF ASCENT ASSOCIATED WITH
SRN PART OF POTENT NEGATIVE TILT SHORTWAVE TROUGH OVER ERN KS.  VERY
STRONG DEEP SHEAR...300+ M2/S2 0-1 KM SRH /GIVEN OBSERVED STORM
MOTIONS/ AND RICH BOUNDARY LYR MOISTURE MOVING N THROUGH THE MS
DELTA SUGGEST POTENTIAL FOR SPIN-UP TORNADOES...IN ADDITION TO
DAMAGING WIND... DESPITE QUASI-LINEAR STORM MODE.

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 22040.


...CORFIDI
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