MESOSCALE DISCUSSION 0543
   NWS STORM PREDICTION CENTER NORMAN OK
   0325 AM CDT SUN APR 15 2012
   
   AREAS AFFECTED...SRN IA AND NRN MO
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 150825Z - 151000Z
   
   A MARGINAL TORNADO THREAT COULD EXIST ACROSS SRN IA AND NRN MO OVER
   THE NEXT 2 TO 3 HOURS. ALTHOUGH THE THREAT IS CONDITIONAL...WW
   ISSUANCE CAN NOT BE RULED OUT ACROSS THE REGION EARLY THIS MORNING.
   
   A BOWING LINE-SEGMENT IS CURRENTLY ONGOING AT THE STATE-LINE
   INTERSECTION OF MO...NEB AND KS VERY NEAR TO THE ANALYZED POSITION
   OF A 60 TO 75 KT LOW-LEVEL JET. THIS JET IS HELPING TO CREATE STRONG
   LOW-LEVEL SHEAR PROFILES WITH REGIONAL WSR-88 VWPS SHOWING 0-1 KM
   SHEAR OF 600 M2/S2. IN SPITE OF VERY WEAK INSTABILITY...THIS COULD
   COMPENSATE ENOUGH FOR THE DEVELOPMENT OF ROTATING STORMS. ALTHOUGH
   THE POTENTIAL FOR MORE THAN ONE BRIEF TORNADO REMAINS SOMEWHAT
   LOW...THE STORMS EXITING TORNADO WATCH 175 WILL BE MONITORED CLOSELY
   FOR SIGNS OF INCREASING ROTATION MAINLY DUE TO THE LOW-LEVEL JET
   PROXIMITY.
   
   ..BROYLES.. 04/15/2012
   
   
   ATTN...WFO...DMX...EAX...OAX...GID...
   
   LAT...LON   42159628 41819460 41069442 40079617 40109913 41439774
               42159628