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WWUS20 KWNS 101308

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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 31

NWS STORM PREDICTION CENTER NORMAN OK

700 AM CST SUN FEB 10 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST ARKANSAS

       WESTERN...CENTRAL...AND NORTHERN LOUISIANA

       EAST TEXAS



EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 700 AM UNTIL 200

PM CST.



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

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHEAST OF

MONROE LOUISIANA TO 55 MILES SOUTH SOUTHEAST OF LUFKIN TEXAS.

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.



OTHER WATCH INFORMATION...CONTINUE...WW 29...WW 30...



DISCUSSION...LOOSELY-ORGANIZED E TX SQLN LINE WITH EMBEDDED

SUPERCELLS EXPECTED TO CONTINUE GENERALLY ESEWD...WHILE STORMS

WITHIN THE LINE MOVE MORE RAPIDLY NEWD ALONG IT. THE LOW-LVL WLY

FLOW IN THE WAKE OF THE SQLN SHOULD CONTINUE TO SLOWLY WEAKEN.

THIS...COUPLED WITH EXISTING STRENGTH OF DEEP SWLY SHEAR /AOA 60

KTS/ AND THE CONTINUED NWD SPREAD OF RICH LOW-LVL MOISTURE INTO FAR

E TX/LA... SUGGESTS THAT STORMS WITHIN THE LINE MAY REMAIN

SEMI-DISCRETE...ENHANCING THE RISK FOR OCCASIONAL TORNADOES IN

ADDITION TO DMGG WIND/MARGINALLY SVR HAIL. SOME RISK ALSO WILL EXIST

FOR THE DEVELOPMENT OF A FEW SUPERCELLS AHEAD OF THE SQLN LINE NEAR

THE SABINE RVR EWD INTO CNTRL LA AS SFC HEATING FURTHER DESTABILIZES

REGION/OVERCOMES EML CAP INVOF DIFFUSE WARM FRONT.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 25040.





...CORFIDI

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