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147 

WWUS20 KWNS 210339

SEL3

SPC WW 210339

ARZ000-LAZ000-MSZ000-TXZ000-211100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 3

NWS STORM PREDICTION CENTER NORMAN OK

940 PM CST WED JAN 20 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       LARGE PART OF SOUTHERN ARKANSAS

       MUCH OF NORTHERN LOUISIANA

       MUCH OF CENTRAL AND SOUTHERN MISSISSIPPI

       SMALL PART OF NORTHEAST TEXAS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 940 PM

UNTIL 500 AM CST.



TORNADOES...HAIL TO 2 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 80 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH OF TEXARKANA

ARKANSAS TO 30 MILES SOUTH SOUTHEAST OF MERIDIAN 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 1...WW 2...



DISCUSSION...STRONG/SEVERE THUNDERSTORMS WILL CONTINUE TO DEVELOP

ACROSS THE WATCH AREA WITH THE APPROACH OF A VIGOROUS UPPER TROUGH

AND DEVELOPING SURFACE LOW NOW OVER SERN OK.  WIND PROFILES EXPECTED

TO INCREASE ACROSS LWR MS VALLEY AND POTENTIAL FOR SUPERCELLS

INCLUDING POSSIBLE TORNADOES WILL PERSIST.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24035.





...HALES

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