MESOSCALE DISCUSSION 0592
   NWS STORM PREDICTION CENTER NORMAN OK
   0842 PM CDT SUN APR 26 2009
   
   AREAS AFFECTED...PORTIONS S-CENTRAL/SERN KS...SWRN THROUGH
   N-CENTRAL/NWRN OK...NW TX...ERN PANHANDLE OF TX.
   
   CONCERNING...TORNADO WATCH 195...
   
   VALID 270142Z - 270345Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 195 CONTINUES.
   
   POTENTIAL FOR STG TORNADOES STILL EXISTS FOR ANY RELATIVELY
   PERSISTENT/DISCRETE SUPERCELLS.  ADDITIONAL DEVELOPMENT IS POSSIBLE
   S OF EXISTING AREAS OF STG-SVR TSTMS OVER SRN KS AND W OF ACTIVITY
   OVER CENTRAL/SWRN OK...AS DRYLINE CONTINUES ITS RETREAT OVER
   PANHANDLE AND SOUTH-PLAINS REGIONS.
   
   LOW LEVEL SHEAR IS FCST TO INCREASE ACROSS MOST OF WW AREA DURING
   NEXT FEW HOURS...AS STRENGTHENING LLJ BOOSTS HODOGRAPH SIZE...WITH
   0-1 KM SRH EXCEEDING 400 J/KG IN MANY LOCALES.  INCREASING SBCINH IS
   EXPECTED AS SFC DIABATIC COOLING OCCURS...BUT THIS PROCESS WILL BE
   GRADUAL GIVEN RICHNESS OF LOW LEVEL THETAE AND MOISTURE
   ADVECTION/TRANSPORT OVER THIS REGION.  EFFECTIVE LIFTED PARCELS WILL
   REMAIN ROOTED AT OR VERY NEAR SFC THROUGH REMAINDER EVENING OVER
   MUCH OF THIS REGION.  MAIN LIMITING FACTORS HAVE BEEN MESSY
   STORM-SCALE STRUCTURES/INTERACTIONS...AND PERHAPS SOMEWHAT
   FRAGMENTED INFLOW-LAYER MOISTURE PROFILES.  SFC ANALYSIS SHOWS
   FAVORABLE MOISTURE ACROSS MUCH OF THIS REGION...WITH DEW POINTS
   GENERALLY MID 60S F IN PROSPECTIVE INFLOW LAYER OF MOST CONVECTION. 
   MOISTURE PROFILE IS SOMEWHAT MORE FRAGMENTED FARTHER UPSTREAM ACROSS
   PORTIONS N-CENTRAL TX WHERE DIURNAL MIXING REDUCED DEW POINTS BELOW
   60 F IN SOME LOCALES.  RIBBONS OF THIS AIR MAY COMPLICATE STORM
   STRUCTURES FARTHER N ACROSS CENTRAL OK LATER THIS EVENING. 
   HOWEVER...BOTH FWD/OUN RAOBS INDICATE BOUNDARY LAYER IS DEEP -- UP
   TO AROUND 700 MB -- WITH POTENTIAL FOR HIGHER MIXING RATIO AIR
   WITHIN LLJ TO MIX DOWNWARD.  ALSO...MOIST BOUNDARY LAYER MAY BE
   SLIGHTLY RICHER AND MORE UNIFORMLY HIGH-RH FARTHER W GIVEN GPS PW
   AROUND 1.6 INCH AT SPS.
   
   ..EDWARDS.. 04/27/2009
   
   
   ATTN...WFO...SGF...TSA...TOP...ICT...FWD...OUN...DDC...SJT...
   LUB...AMA...
   
   LAT...LON   38589693 38509692 38529635 38189634 38199601 38039600
               38049509 37369506 37429552 36999549 36999601 36219605
               36159657 35429661 35529643 34909639 34599652 34589690
               33999694 33729711 33909725 33819746 34009767 33829784
               33909797 33449797 33419996 32960001 32960106 34320104
               34730090 34770052 36470055 36500002 37049999 37029950
               37409948 37369896 37849898 37839847 38139846 38149787
               38579787 38589693