MESOSCALE DISCUSSION 0871
   NWS STORM PREDICTION CENTER NORMAN OK
   0919 PM CDT MON MAY 25 2009
   
   AREAS AFFECTED...S CENTRAL INTO NERN NEB
   
   CONCERNING...HEAVY RAINFALL 
   
   VALID 260219Z - 260415Z
   
   CORRECTED FOR INCOMPLETE SENTENCE
   
   THUNDERSTORMS CAPABLE OF PRODUCING HEAVY RAINFALL...WITH RATES UP TO
   1-2 IN/HR...ARE POSSIBLE OVER PORTIONS OF S CENTRAL NEB INTO NERN
   NEB.
   
   A SLOW MOVING COLD FRONT WAS LOCATED FROM ROUGHLY 30 NW OF HLC TO
   GRI TO YKN AT 01Z. ELY FLOW THROUGH THE LOWEST 3 KM AGL IS FAVORING
   CONTINUOUS THUNDERSTORM DEVELOPMENT/REGENERATION ALONG THE
   FRONT...AND VERY WEAK DEEP LAYER FLOW IS RESULTING IN NEGLIGIBLE
   DOWNSTREAM ADVECTION. OBSERVED 00Z RAOB FROM OAX INDICATES SOMEWHAT
   DRY CONDITIONS OVER ERN NEB. HOWEVER...CYCLONIC FLOW AROUND SLOW
   MOVING WARM CORE CYCLONE CENTERED NEAR SGF MAY ADVECT HIGHER
   MOISTURE CONTENT /I.E. PWAT VALUES NEAR 1.5 INCHES PER TOP SOUNDING/
   INTO THE REGION...RESULTING IN INCREASINGLY FAVORABLE CONDITIONS FOR
   HEAVY RAIN PRODUCTION ALONG THE FRONT AND POSSIBLE FLASH FLOODING.
   
   ..GARNER.. 05/26/2009
   
   
   ATTN...WFO...OAX...GID...LBF...
   
   LAT...LON   42399719 40689784 40069873 40279947 41349899 42359807
               42729747 42399719