SEL3
SPC WW 312303
ARZ000-LAZ000-MSZ000-010500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 773
NWS STORM PREDICTION CENTER NORMAN OK
400 PM CST FRI DEC 31 2010
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EASTERN ARKANSAS
NORTHEAST LOUISIANA
MISSISSIPPI
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 400 PM UNTIL
1100 PM CST.
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 EAST SOUTHEAST OF
NATCHEZ MISSISSIPPI TO 40 MILES NORTH NORTHEAST OF OXFORD
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 769...WW 770...WW
771...WW 772...
DISCUSSION...TSTMS SHOULD CONTINUE TO INCREASE IN COVERAGE AND
INTENSITY THIS EVENING AND TONIGHT ACROSS MUCH OF MS AS PACIFIC
FRONT INTERACTS WITH A MOISTENING ENVIRONMENT. SSWLY LLJ IS
FORECAST TO PERSIST ACROSS THE REGION OVERNIGHT RESULTING IN MORE
THAN SUFFICIENT LOW AND DEEP-LAYER SHEAR TO SUPPORT EMBEDDED
SUPERCELLS CAPABLE OF TORNADOES AND DAMAGING WINDS.
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 500.
MEAN STORM MOTION VECTOR 23035.
...MEAD
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