MESOSCALE DISCUSSION 0644
   NWS STORM PREDICTION CENTER NORMAN OK
   0405 AM CDT THU APR 30 2009
   
   AREAS AFFECTED...SWRN/S-CNTRL NEB INTO NWRN/N-CNTRL KS
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 216...
   
   VALID 300905Z - 301030Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 216
   CONTINUES.
   
   THE THREAT FOR DAMAGING WINDS AND HAIL CONTINUES ACROSS CNTRL/ERN
   PARTS OF WW AREA.  THIS SEVERE THREAT MAY DEVELOP E OF WW 216
   BETWEEN 0930-1000Z AND CONVECTIVE TRENDS ARE BEING MONITORED FOR AN
   ADDITIONAL WW.
   
   AS OF 0845Z...REGIONAL RADAR IMAGERY INDICATED A BROKEN LINE OF
   STRONG TO SEVERE STORMS FROM PHELPS COUNTY NEB SWWD TO RAWLINS
   COUNTY KS MOVING 280/30-35 KT. GLD WSR-88D DATA AND HIGHER
   RESOLUTION RADAR MOSAICS SHOW THAT SYSTEM GUST FRONT HAS SURGED
   AHEAD OF PARENT UPDRAFTS BY 40-50 KM...SUGGESTING THE EVOLVING
   SYSTEM COLD POOL IS DOMINATING AMBIENT LOW-LEVEL SHEAR.
   NONETHELESS...TSTM COMPLEX HAS SHOWN SOME FORWARD-PROPAGATIONAL
   CHARACTERISTICS AND LOCALLY DAMAGING WINDS WILL REMAIN POSSIBLE
   WITHIN ANY STRONGER DOWNDRAFT CORES.  OTHERWISE...EXPECT SEVERE HAIL
   TO REMAIN THE PRIMARY SEVERE HAZARD WITH THE MOST INTENSE STORMS.
   
   A GRADUAL VEERING OF 40-50 KT LLJ OBSERVED CURRENTLY OVER WRN KS
   SHOULD SERVE TO ENHANCE MOIST INFLOW INTO TSTMS WITH ACTIVITY LIKELY
   CONTINUING ESEWD TO THE N OF WEAK QUASI-STATIONARY EXTENDING ALONG
   ROUGHLY A HLC-EMP-OJC LINE.
   
   ..MEAD.. 04/30/2009
   
   
   ATTN...WFO...TOP...ICT...GID...GLD...
   
   LAT...LON   39199978 39370064 39810055 40259978 40479869 40359804
               40029776 39119791 39179873 39199978