MESOSCALE DISCUSSION 1042
   NWS STORM PREDICTION CENTER NORMAN OK
   0315 AM CDT THU JUN 11 2009
   
   AREAS AFFECTED...FAR SRN IND/ KY/FAR SWRN OH
   
   CONCERNING...TORNADO WATCH 370...
   
   VALID 110815Z - 110915Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 370 CONTINUES.
   
   NEW WATCH MAY BE NEEDED TO THE EAST OF WW 370 FROM CENTRAL/ERN KY
   INTO FAR SWRN PARTS OF OH.  IN ADDITION TO A SEVERE THREAT...HEAVY
   RAINFALL RATES ARE LIKELY GIVEN CURRENT SLOW STORM MOTIONS AND
   PRECIPITABLE WATER VALUES RANGING FROM 1.5-1.7 INCHES.
   
   AT 08Z...REGIONAL RADARS INDICATED A LINE OF STRONG TSTMS EXTENDING
   FROM OLDHAM TO ALLEN COUNTIES KY.  THIS ACTIVITY APPEARS TO HAVE
   DEVELOPED ALONG A LOW LEVEL CONFLUENCE AXIS IN ADVANCE OF A FORWARD
   PROPAGATING MCS LOCATED OVER THE LOWER OH VALLEY.  RADAR DATA ALSO
   SUGGESTED AN ATTENDANT MCV TO THIS MCS WAS TRACKING EWD THROUGH FAR
   SRN IND.  DEEP WLY FLOW /50 KT AT MID LEVELS AND 30-40 KT LLJ/
   WITHIN A MODERATELY UNSTABLE AIR MASS WOULD AND EFFECTIVE BULK SHEAR
   INCREASING BY EARLY MORNING SUGGEST POTENTIAL FOR SOME STORM
   ORGANIZATION.  HAIL AND DAMAGING WINDS WILL BE POSSIBLE WITH THE
   STRONGER STORMS.
   
   HOWEVER...CURRENT STORM MOTIONS ARE SOMEWHAT SLOW /AROUND 20 KT/ AND
   THE LACK OF A WELL DEFINED COLD POOL MAY TEND TO LIMIT AN INCREASE
   IN FORWARD SPEED OF THIS COMPLEX OF STORMS...AND THUS LIMITING THE
   OVERALL SEVERITY OF THIS ACTIVITY.
   
   ..PETERS.. 06/11/2009
   
   
   ATTN...WFO...RLX...JKL...ILN...LMK...OHX...IND...PAH...
   
   LAT...LON   36598630 37188683 37518715 38518690 38788617 38908527
               39198462 39118337 38798280 37858304 36998366 36638404
               36598630