MESOSCALE DISCUSSION 1999
   NWS STORM PREDICTION CENTER NORMAN OK
   0610 AM CDT TUE SEP 08 2009
   
   AREAS AFFECTED...SOUTHERN KS
   
   CONCERNING...HEAVY RAINFALL 
   
   VALID 081110Z - 081345Z
   
   RAINFALL RATES MAY GRADUALLY DECREASE THROUGH THE EARLY/MID MORNING
   HOURS...BUT HEAVY RAINFALL/POTENTIAL FLOODING WILL REMAIN A CONCERN
   ACROSS SOUTHERN KS WITH LOCALIZED 1+ IN/HR RATES POSSIBLE.
   
   ALONG/AHEAD OF A CONVECTIVELY ENHANCED MID LEVEL
   IMPULSE...PERSISTENCE OF SLOW MOVING/HEAVY RAINFALL PRODUCING DEEP
   CONVECTION APPEARS LIKELY ACROSS MUCH OF SOUTHERN KS THROUGH THE
   EARLY/MID MORNING HOURS...ESPECIALLY ALONG/NORTH OF A WEST-EAST
   EFFECTIVE BOUNDARY ALONG THE KS/OK BORDER. MODERATELY STRONG LOW
   LEVEL JET/MOISTURE TRANSPORT WILL CONTINUE TO CONTRIBUTE TO HEAVY
   RAINFALL OVER THE NEXT SEVERAL HOURS. DERIVED WIND PROFILE DATA FROM
   VANCE WSR-88D/VICI PROFILER IS SAMPLING 30-35 KT SWLY FLOW AROUND 1
   KM...WITH THE 05Z LAMONT OK OBSERVED RAOB SAMPLING A MOIST SOURCE
   REGION AIRMASS CHARACTERIZED BY MODERATE INSTABILITY /1700 J PER KG
   MUCAPE/ AND HIGH PW /1.7 INCHES/. OTHERWISE...WEAK MID/HIGH LEVEL
   FLOW WILL FURTHER CONTRIBUTE TO SLOW STORM MOTIONS/ECHO TRAINING
   THROUGH THE MORNING...AS STEADY UPLIFT CONTINUES TO OCCUR AHEAD OF
   THE SLOW MOVING UPPER IMPULSE IN VICINITY OF THE EFFECTIVE
   FRONT/SURFACE COLD POOL. RAINFALL RATES MAY MODESTLY/SLOWLY DECREASE
   AFTER DAYBREAK AS THE LOW LEVEL JET BEGINS TO GRADUALLY ABATE...BUT
   LOCALIZED 1+ IN/HR RATES AND HEAVY RAINFALL/POTENTIAL FLOODING WILL
   REMAIN A CONCERN NONETHELESS ACROSS SOUTHERN KS.
   
   ..GUYER.. 09/08/2009
   
   
   ATTN...WFO...SGF...ICT...DDC...
   
   LAT...LON   38029976 37979758 37569503 36999548 37079960 38029976