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000 

WWUS20 KWNS 041944

SEL1

SPC WW 041944

LAZ000-MSZ000-CWZ000-050300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 1

NWS STORM PREDICTION CENTER NORMAN OK

145 PM CST THU JAN 4 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST LOUISIANA

       SOUTHERN MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 145 PM UNTIL

900 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 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTHWEST OF BATON

ROUGE LOUISIANA TO 40 MILES SOUTHEAST OF SLIDELL LOUISIANA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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.



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INCREASE THIS

AFTERNOON ACROSS SOUTHEAST LA...AHEAD OF UPPER TROUGH AND ASSOCIATED

SURFACE COLD FRONT.  18Z LIX SOUNDING CONFIRMS FAVORABLE LOW LEVEL

AND DEEP LAYER VERTICAL SHEAR PROFILES FOR ORGANIZED/SUPERCELL

STORMS CAPABLE OF DAMAGING WINDS AND TORNADOES.  THREAT SHOULD

INCREASE WITH TIME AS CONTINUED SOUTHERLY LOW LEVEL WINDS TRANSPORT

GULF MOISTURE INLAND.



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 450.

MEAN STORM MOTION VECTOR 24030.





...HART

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