SEL6
SPC WW 272343
ARZ000-TNZ000-280400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 966
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CST SAT DEC 27 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EXTREME EAST CENTRAL ARKANSAS
WESTERN TENNESSEE
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 545 PM UNTIL
1000 PM CST.
HAIL TO 1 INCH 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 50
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
DYERSBURG TENNESSEE TO 50 MILES SOUTHWEST OF JACKSON TENNESSEE.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).
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 962...WW 964...WW 965...
DISCUSSION...WELL-DEVELOPED SQUALL LINE WITH EMBEDDED BOW ECHOES
WILL LIKELY PERSIST FOR THE NEXT FEW HOURS WHILE MOVING FROM AR INTO
WRN TN. STRONG AMBIENT FLOW AND VERTICAL SHEAR IN THE LOW LEVELS
WILL MAINTAIN A THREAT FOR DAMAGING WINDS BEFORE WEAKENING
INSTABILITY REDUCES THE SEVERE THREAT LATER TONIGHT.
AVIATION...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 26035.
...THOMPSON
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