[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 261708
SEL5
SPC WW 261708
ALZ000-ARZ000-MSZ000-TNZ000-270100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 555
NWS STORM PREDICTION CENTER NORMAN OK
1210 PM CDT SUN JUN 26 2011

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

       NORTHERN ALABAMA
       FAR NORTHEAST ARKANSAS
       NORTHERN MISSISSIPPI
       SOUTHWEST AND SOUTHERN-MIDDLE TENNESSEE

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1210 PM UNTIL
800 PM CDT.

HAIL TO 1.5 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 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST
SOUTHWEST OF MEMPHIS TENNESSEE TO 45 MILES NORTHEAST OF GADSDEN
ALABAMA.  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.

DISCUSSION...LINEAR MCS OVER PORTIONS OF WRN AND MIDDLE TN IS
EXPECTED TO CONTINUE SWD INTO TO A HOT...MOIST AND MODERATELY TO
STRONGLY UNSTABLE ENVIRONMENT WITH MLCAPE OF 2500-3500 J/KG.
ADDITIONAL STORM DEVELOPMENT WILL BE POSSIBLE ALONG OUTFLOW BOUNDARY
PRECEDING MCS OVER NRN AL.  THOUGH VERTICAL SHEAR WILL REMAIN
MARGINALLY STRONG FOR STORM ORGANIZATION...THE DEGREE OF INSTABILITY
AND COLD POOL ORGANIZATION OF ONGOING STORMS SUGGEST THE POTENTIAL
FOR DAMAGING WINDS AND HAIL THIS AFTERNOON AND EVENING.

AVIATION...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 32025.


...MEAD
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