MESOSCALE DISCUSSION 1736
   NWS STORM PREDICTION CENTER NORMAN OK
   0910 PM CDT TUE JUL 08 2008
   
   AREAS AFFECTED...ERN IND...SWRN OH...EXTREME NORTH CENTRAL KY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 673...
   
   VALID 090210Z - 090315Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 673
   CONTINUES.
   
   THREAT FOR DAMAGING WINDS WILL BE GREATEST ACROSS MAINLY EAST
   CENTRAL IND INTO ADJACENT PARTS OF SWRN OH...GENERALLY ALONG AND
   SOUTH OF I-70.  GIVEN LIMITED THREAT AREA...CONTINUED DECREASE OF
   INSTABILITY/INCREASING SURFACE BASED INHIBITION...AND WEAKENING LOW
   LEVEL LAPSE RATES...A NEW WW IS NOT WARRANTED TO THE EAST OF WW 673.
   
   REGIONAL RADAR IMAGERY INDICATED A FAST MOVING LINE OF STORMS
   EXTENDING FROM EAST CENTRAL TO SOUTH CENTRAL IND...WITH A FORWARD
   SPEED AT 35-40 KT.  AT TIMES...LOCALLY STRONGER MOVEMENT ACROSS
   SHELBY/RUSH COUNTIES IND HAS BEEN EXCEEDING 45 KT.  IND WSR-88D
   SHOWED A PERSISTENT REAR INFLOW JET OF 40-45 KT BETWEEN 1.5-2.5 KM
   AGL...WITH A SIMILAR TREND IN STRENGTHENING WINDS SPEEDS ON THE ILN
   RADAR IN THE SAME LAYER.  ASCENT ATTENDANT TO THIS ONGOING MCS OVER
   IND WITH AN MCV LOCATED 35 N IND SUGGESTS TSTM DEVELOPMENT WILL
   PERSIST WITH ACTIVITY SPREADING EWD THROUGH OH OVERNIGHT.  DESPITE
   FAST MOVEMENT OF THIS SYSTEM...INCREASING SURFACE BASED INHIBITION
   AND WEAKENING LOW LEVEL LAPSE RATES DUE TO LOSS OF DAY TIME HEATING
   SUGGEST STRONGER WIND GUSTS SHOULD STRUGGLE TO REACH THE SURFACE. 
   OVERALL DIMINISHING SEVERE WEATHER THREAT IS EXPECTED TO CONTINUE
   EWD WITH THIS TSTM ACTIVITY ACROSS OH.
   
   ..PETERS.. 07/09/2008
   
   
   ATTN...WFO...ILN...LMK...IND...
   
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