MESOSCALE DISCUSSION 0500
   NWS STORM PREDICTION CENTER NORMAN OK
   0947 PM CDT FRI MAY 07 2010
   
   AREAS AFFECTED...NRN OH
   
   CONCERNING...TORNADO WATCH 143...
   
   VALID 080247Z - 080345Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 143 CONTINUES.
   
   THE SEVERE THREAT WILL PERSIST BEYOND THE EXPIRATION TIME OF WW 143.
   FOR THIS REASON...WFO CLEVELAND WILL EXTEND THE WATCH ACROSS PARTS
   OF CNTRL AND NERN OH.
   
   A CLUSTER OF SEVERE STORMS IS ONGOING IN NRN OH ALONG THE AXIS OF A
   50 TO 60 KT LOW-LEVEL JET. THIS FEATURE ALONG WITH AN APPROACHING
   MID-LEVEL JET WILL CREATE STRONG VERTICAL SHEAR PROFILES FAVORABLE
   FOR SEVERE STORMS. ALTHOUGH INSTABILITY HAS BECOME WEAK...THIS
   FACTOR SHOULD BE OVERCOME BY INCREASING LARGE-SCALE ASCENT FROM THE
   WEST AND STEEP MID-LEVEL LAPSE RATES WHICH WILL BE SUFFICIENT FOR
   HAIL. THE STRONG LOW-LEVEL FLOW MAY ALSO SUPPORT AN ISOLATED
   DAMAGING WIND THREAT.
   
   ..BROYLES.. 05/08/2010
   
   
   ATTN...WFO...PBZ...CLE...ILN...
   
   LAT...LON   40828145 40248234 39748298 39768346 39978370 40378358
               40828341 41348294 41678233 42008147 41748082 40988092
               40828145