ZCZC SPCPWOSPC ALL
   WOUS40 KWNS 101715
   ARZ000-LAZ000-OKZ000-TXZ000-110115-
   
   PUBLIC SEVERE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 AM CST TUE FEB 10 2009
   
   ...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE SOUTHERN PLAINS
   INTO THE MID AND LOWER MISSISSIPPI VALLEY THIS AFTERNOON AND
   TONIGHT...
   
   THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
   DEVELOPMENT OF TORNADOES...LARGE HAIL AND DAMAGING WINDS OVER PARTS
   OF THE SOUTHERN PLAINS INTO THE MID AND LOWER MISSISSIPPI VALLEY
   THIS AFTERNOON AND TONIGHT.
   
   THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE
   
          WESTERN 2/3 OF ARKANSAS
          NORTHWEST LOUISIANA
          MUCH OF THE EASTERN HALF OF OKLAHOMA
          NORTHEAST TEXAS
   
   ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE FROM THE MIDDLE TEXAS
   COAST EASTWARD TO THE MOUTH OF THE MISSISSIPPI RIVER...AND AS FAR
   NORTH AS KANSAS...MISSOURI...AND ILLINOIS.
   
   A STRONG MIDDLE- AND UPPER-LEVEL STORM SYSTEM CONTINUES MOVING
   ACROSS THE FOUR CORNERS REGION...AND WILL EMERGE INTO THE CENTRAL
   AND SOUTHERN PLAINS LATER THIS AFTERNOON.  AHEAD OF THIS SYSTEM...A
   MOIST LOW-LEVEL AIRMASS CONTINUES STREAMING NORTHWARD ACROSS TEXAS
   AND LOUISIANA INTO EASTERN OKLAHOMA AND THE OZARKS REGION.  DAYTIME
   HEATING OF THE MOISTENING BOUNDARY LAYER WILL INCREASE THROUGH THE
   AFTERNOON ACROSS OKLAHOMA AND TEXAS AS INITIAL CLOUD COVER SHIFTS
   EASTWARD.  THIS COMBINED WITH COOLING ALOFT IN CONJUNCTION WITH THE
   APPROACHING STORM SYSTEM LATER TODAY WILL RESULT IN AIRMASS
   DESTABILIZATION -- SUPPORTIVE OF THUNDERSTORM DEVELOPMENT BY MID TO
   LATE AFTERNOON.
   
   INITIAL STORM MODE IS FORECAST TO BE SUPERCELLULAR...AS A VERY
   STRONG WIND FIELD -- VEERING/INCREASING WITH HEIGHT THROUGH THE
   LOWER TROPOSPHERE -- RESULTS IN FAVORABLE SHEAR FOR STORM ROTATION. 
   AS STORMS DEVELOP FROM CENTRAL OKLAHOMA SOUTHWARD INTO NORTH CENTRAL
   TEXAS LATER THIS AFTERNOON...EXPECT LARGE HAIL AND LOCALLY-DAMAGING
   WINDS ALONG WITH THE POTENTIAL FOR ISOLATED STRONG TORNADOES.
   
   OVERNIGHT...AS A COLD FRONT APPROACHES FROM THE WEST...STORMS SHOULD
   BECOME ORGANIZED IN A MORE LINEAR FASHION ALONG THE FRONT...AND THEN
   SPREAD RAPIDLY EASTWARD TOWARD THE MISSISSIPPI VALLEY.  ALONG WITH A
   CONTINUED THREAT FOR HAIL AND ISOLATED TORNADOES...WIDESPREAD
   DAMAGING WINDS SHOULD BECOME INCREASINGLY LIKELY.
   
   THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE WEATHER
   SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA WEATHER
   RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER TODAY.
   
   ..GOSS.. 02/10/2009
   
   $$