[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 051720
SEL5
SPC WW 051720
ARZ000-MOZ000-MSZ000-TNZ000-060100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 145
NWS STORM PREDICTION CENTER NORMAN OK
1220 PM CDT THU APR 5 2012

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

       FAR NORTHEAST ARKANSAS
       MISSOURI BOOTHEEL
       NORTHERN MISSISSIPPI
       WESTERN TENNESSEE

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1220 PM UNTIL
800 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
DYERSBURG TENNESSEE TO 30 MILES SOUTH OF OXFORD MISSISSIPPI.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 143...WW 144...

DISCUSSION...TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY THIS AFTERNOON WITHIN MIDLEVEL COLD CORE OF UPPER LOW.
DESPITE MARGINAL VERTICAL SHEAR...STEEP LAPSE RATES AND COOL
THERMODYNAMIC PROFILES WILL SUPPORT HAIL PRODUCTION WITH THE
STRONGEST STORMS.  A BRIEF TORNADO IS POSSIBLE OWING TO AMBIENT
VERTICAL VORTICITY...THOUGH ANY OCCURRENCE SHOULD BE SHORT-LIVED.

AVIATION...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 400. MEAN STORM
MOTION VECTOR 24015.


...MEAD

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