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ARZ000-LAZ000-OKZ000-TXZ000-091700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 944

NWS STORM PREDICTION CENTER NORMAN OK

410 AM CST TUE DEC 9 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       LARGE PART OF SOUTHERN ARKANSAS

       MUCH OF NORTHERN LOUISIANA

       SMALL PART OF SOUTHEAST OKLAHOMA

       PARTS OF NORTHEAST TEXAS



EFFECTIVE THIS TUESDAY MORNING FROM 410 AM UNTIL 1100 AM CST.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 75 MILES SOUTH OF LONGVIEW

TEXAS TO 35 MILES NORTH NORTHWEST OF LITTLE ROCK ARKANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



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...THIS TORNADO WATCH REPLACES SEVERE

THUNDERSTORM WATCH NUMBER 943. WATCH NUMBER 943 WILL NOT BE IN

EFFECT AFTER 410 AM CST. CONTINUE...WW 942...



DISCUSSION...MOISTURE/INSTABILITY CONTINUE TO SPREAD NWD AHEAD OF

DEVELOPING STRONG UPPER TROUGH APPROACHING SRN PLAINS.  WITH STRONG

VEERING SHEAR PROFILES IN PLACE...POTENTIAL WILL CONTINUE FOR

SUPERCELLS AND TORNADOES ACROSS THE WATCH AREA THRU THE MORNING.

FAVORABLE CONDITIONS WILL GRADUALLY DEVELOP N AND E ACROSS THE WATCH

AREA WITH THE SUPPORT OF THE 40-50KT SLY LLJ.



AVIATION...TORNADOES AND 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 24040.





...HALES

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