DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0257 PM CDT MON MAY 20 2013
   
   VALID 202000Z - 211200Z
   
   ...THERE IS A MDT RISK OF SVR TSTMS OVER NORTH CENTRAL
   TX...CENTRAL/ERN OK...EXTREME SERN KS...SRN MO...AND NWRN AR...
   
   ...THERE IS A SLGT RISK OF SVR TSTMS FROM THE SRN PLAINS INTO THE
   GREAT LAKES REGION...
   
   ...SRN PLAINS INTO THE OZARKS...
   MINOR ADJUSTMENTS HAVE BEEN MADE TO THE OUTLOOK BASED ON CURRENT
   BOUNDARY LOCATIONS AND RECENT CONVECTIVE INITIATION.
   
   SEVERE STORMS HAVE DEVELOPED ALONG THE DRY LINE FROM THE WRN PART OF
   NORTH TEXAS INTO CENTRAL OK...WITH ADDITIONAL STORMS OVER SERN KS
   AND SWRN MO.  SPECIAL SOUNDINGS AT 17-18Z FROM OUN/SGF/FWD INDICATE
   STEEP LAPSE RATES ARE PERSISTING ABOVE 850 MB THAT ARE ASSOCIATED
   WITH THE ELEVATED MIXED LAYER ACROSS THE REGION.  WITH SURFACE
   DEWPOINTS IN THE UPPER 60S/LOWER 70S AND TEMPERATURES WARMING INTO
   THE LOW/MID 80S IN OK AND NEAR 90 IN NRN TX...A VERY UNSTABLE
   ENVIRONMENT IS PRESENT WITH SBCAPE RANGING FROM 3500-5000 J/KG. DEEP
   LAYER SHEAR OF 40-50 KT WILL ENHANCE STORM ORGANIZATION AND
   INTENSITY WITH POTENTIAL FOR SUPERCELLS AND BOWING LINE SEGMENTS. 
   VERY LARGE HAIL...DAMAGING WIND AND SEVERAL STRONG TORNADOES WILL BE
   POSSIBLE THROUGH THE EVENING AS ACTIVITY CONTINUES TO DEVELOP AND
   SPREAD EWD/NEWD.
   
   ...GA/FL...
   STRONGER STORMS APPEAR MOST LIKELY FROM SRN GA AND NRN FL INTO THE
   SWRN PART OF THE FL PENINSULA...IN ASSOCIATION WITH AN UPPER LOW
   OVER SRN GA/NRN FL.  ISOLATED MARGINAL HAIL AND WET MICROBURSTS MAY
   ACCOMPANY A FEW OF THE CELLS BUT OVERALL SEVERE THREAT SHOULD BE
   LIMITED.
   
   ..WEISS.. 05/20/2013