New Tornado Watch

URGENT – IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 808
NWS STORM PREDICTION CENTER NORMAN OK
1040 AM CST THU DEC 24 2009

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

SMALL PART OF SOUTHWEST ALABAMA
MUCH OF SOUTHEAST LOUISIANA
MUCH OF CENTRAL AND SOUTHERN MISSISSIPPI
COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1040 AM UNTIL
600 PM CST.

TORNADOES…HAIL TO 1 INCH IN DIAMETER…THUNDERSTORM WIND GUSTS
TO 80 MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH NORTHEAST OF
JACKSON MISSISSIPPI TO 10 MILES EAST SOUTHEAST OF BOOTHVILLE
LOUISIANA. 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 807…

DISCUSSION…WELL DEVELOPED SQUALL LINE N/S FROM NEAR NERN LA/MS
BORDER SWD INTO GULF WITH EMBEDDED SUPERCELLS WILL CONTINUE EWD
AHEAD OF STRONG UPPER SYSTEM APPROACHING FROM TX. WITH THE 100KT
MID LVL WIND MAX ROTATING NEWD ACROSS LWR MS VALLEY THIS
AFTERNOON…CONDITIONS WILL REMAIN VERY FAVORABLE FOR TORNADIC
SUPERCELLS WITHIN THE SQUALL LINE AS WELL AS ANY DESCRETE STORMS
AHEAD OF LINE PARTICULARLY SRN PORTION OF WATCH WHERE MORE UNSTABLE
AIR MASS WILL BE AVAILABLE. IN ADDITION INCREASING THREAT OF
DAMAGING WINDS ASSOCIATED WITH THE SQUALL LINE AS JET MAX MOVES
ACROSS AREA DURING AFTERNOON.

AVIATION…TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 23040.

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