MESOSCALE DISCUSSION 0063
   NWS STORM PREDICTION CENTER NORMAN OK
   0959 PM CST MON JAN 28 2013
   
   AREAS AFFECTED...CNTRL/ERN IA...NRN IL...FAR SRN WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 290359Z - 290600Z
   
   PROBABILITY OF WATCH ISSUANCE...5 PERCENT
   
   SUMMARY...MOSTLY SMALL HAIL BUT ISOLATED HAIL TO 1 INCH IN DIAMETER
   SHOULD PERSIST NEXT FEW HOURS WITHIN AN EXPANDING AREA OF ELEVATED
   TSTMS DEVELOPING E/NEWD FROM THE I-80 CORRIDOR.
   
   DISCUSSION...ROBUST LOW-LEVEL WARM THETA-E ADVECTION AIDED BY A 55
   KT LLJ ACROSS THE MID-MO VALLEY WILL SUPPORT PERSISTENT ELEVATED
   TSTM DEVELOPMENT N OF AN ARCING WARM FRONT ALONG THE MO/IA BORDER TO
   SRN IL. MUCAPE WILL REMAIN WEAK WITH MODEST MID-LEVEL LAPSE RATES
   AROUND 6.5 C/KM PER 00Z TOP RAOB. NEVERTHELESS...SUFFICIENT
   CLOUD-BEARING SHEAR DOES EXIST FOR ORGANIZED MULTICELL CLUSTERS
   CAPABLE OF PRODUCING ISOLATED MARGINALLY SEVERE HAIL.
   
   ..GRAMS/HART.. 01/29/2013
   
   
   ATTN...WFO...LOT...ILX...MKX...DVN...ARX...DMX...
   
   LAT...LON   42269436 42809343 42999203 42818943 42608797 41758751
               41408763 41088792 40878859 40928945 41129038 41449213
               41729364 41779435 42269436