MESOSCALE DISCUSSION 1874
   NWS STORM PREDICTION CENTER NORMAN OK
   0747 PM CDT THU AUG 23 2007
   
   AREAS AFFECTED...NERN KS...SERN NEB...NWRN MO AND SRN IA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 644...
   
   VALID 240047Z - 240245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 644
   CONTINUES.
   
   SCT TSTMS WILL CONTINUE TO FORM ALONG A STATIONARY BOUNDARY
   EXTENDING BETWEEN CNK AND MHK NEWD TO SCENTRAL IA. A FEW OF THESE
   TSTMS WILL CONTINUE TO POSE A MARGINAL SVR WIND/HAIL THREAT.
   ALTHOUGH THE MAJORITY OF CONVECTION TO THIS POINT HAS BEEN OVER THE
   NERN 1/2 OF WW 644 /SRN IA/. AS THE LOW LEVEL JET STRENGTHENS THIS
   EVENING...MORE WIDESPREAD CONVECTIVE DEVELOPMENT IS EXPECTED TO
   OCCUR OVER NWRN MO/NERN KS AND SERN NEB. GIVEN MARGINAL VERTICAL
   SHEAR /EXCEPT JUST NORTH OF THE FRONTAL BOUNDARY/ THE MAIN THREAT
   SHOULD CONTINUE TO TRANSITION TO HVY RAIN OVER THE NEXT FEW HOURS.
   
   ..CROSBIE.. 08/24/2007
   
   
   ATTN...WFO...DVN...DMX...EAX...OAX...TOP...ICT...GID...
   
   40869562 40099787 39809842 39079809 38769766 38689716
   38929633 39189572 39399499 39829448 40339338 40819219
   41119177 41439200 41529293 41409488