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Particularly Dangerous Situation (PDS) Tornado Watch 296
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WW0296 Radar
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   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 296
   NWS STORM PREDICTION CENTER NORMAN OK
   335 PM CDT SAT MAY 10 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          SOUTHERN ARKANSAS
          NORTHWEST MISSISSIPPI
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 335 PM UNTIL
   1000 PM CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 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 75 STATUTE
   MILES NORTH AND SOUTH OF A LINE FROM 65 MILES NORTH NORTHWEST OF
   TEXARKANA ARKANSAS TO 35 MILES NORTH OF GREENWOOD MISSISSIPPI. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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 TORNADO
   WATCH NUMBER 292. WATCH NUMBER 292 WILL NOT BE IN EFFECT AFTER
   335 PM CDT. CONTINUE...WW 293...WW 294...WW 295...
   
   DISCUSSION...POTENTIALLY VOLATILE SITUATION MAY BE UNFOLDING ACROSS
   PORTIONS OF SOUTHWEST AND SOUTHERN AR...EWD TO NWRN/CNTRL MS THROUGH
   THIS EVENING AS LARGE DEEP-LAYER CYCLONE CONTINUES TO INTENSIFY
   ACROSS KS/MO AND ASCENT STRENGTHENS ACROSS VERY UNSTABLE AIR MASS.
   WARM FRONT NOW BISECTING AR NW-SE HAS BEEN REINFORCED BY DAYLONG
   STRONG TO SEVERE ELEVATED CONVECTION ACROSS THE OZARK PLATEAU. AS
   STRONGER FORCING NOW EMERGES WITH THE ADVANCING UPPER
   TROUGH...RESIDUAL WEAK INHIBITION SHOULD BE REMOVED AND ALLOW FOR
   SURFACE-BASED STORM DEVELOPMENT. STORMS/SUPERCELLS DEVELOPING IN
   UNPERTURBED AIR MASS ACROSS ERN/SERN OK WILL ENCOUNTER MOIST LOW
   LEVEL ELY/SELY FLOW NEAR THE WARM FRONT/OUTFLOW BOUNDARY ACROSS AR
   SHORTLY. LOW LEVEL SHEAR ALONG THIS BOUNDARY...AND ACROSS THE REST
   OF THE WARM SECTOR...WILL SUPPORT LONG-LIVED UPDRAFT ROTATION. A
   CORRIDOR OF GREATER POTENTIAL FOR STRONG TO INTENSE LOW LEVEL STORMS
   ROTATION MAY EVOLVE THROUGH THE EVENING HOURS WITH THE THREAT OF ONE
   OR TWO LONGER-LIVED STRONG TORNADOES WITHIN THE WATCH AREA.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 26030.
   
   
   ...CARBIN
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