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WWUS20 KWNS 090307

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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 649

NWS STORM PREDICTION CENTER NORMAN OK

1005 PM CDT WED SEP 8 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL ARKANSAS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1005 PM

UNTIL 500 AM CDT.



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 EAST AND WEST OF A LINE FROM 5 MILES NORTH OF RUSSELLVILLE

ARKANSAS TO 45 MILES SOUTH SOUTHWEST OF HOT SPRINGS ARKANSAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 648...



DISCUSSION...A SMALL AREA OF WRN AND CNTRL AR MAY SEE A CONTINUED

RISK FOR A TORNADO OR TWO THROUGH EARLY THU AS REGION IS GLANCED BY

LOW LVL SPEED MAX ASSOCIATED WITH NE-MOVING T.D "HERMINE."  VERY

MOIST LOW LVL ENVIRONMENT AND MODERATELY BACKED FLOW INVOF WEAK

WNW/ESE WARM FRONT IN CNTRL/SRN AR WILL ENHANCE POTENTIAL FOR LOW

LVL STORM ROTATION WITH ANY ACTIVITY CONTINUING TO FORM ON ERN

FRINGE OF SSWLY LLJ.



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 21030.





...CORFIDI

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