Heavy rains are falling in  two  areas... one over  central and eastern  SD... and the   other over  the  SE states. The Deep south saw   widespread heavy rains  and  eastern WY eastern MT   western ND western SD  and western  NEB saw moderate rains. The  SHORT TERM  forecast is unchanged.   In the  MEDIUM RANGE   forecast t  models   show front sweeping  through the    ECB and East Coast  but now develop a  wave of Low pressure on the front  over  MO  that bring  moderate   to heavy rains   on the 9th into early on the 10th  over the  ECB.  Meanwhile   the massive cold  High  drops out of  NW Canada.    The 6-10 day   still shows  the  major cold air  outbreak for  Mid Oct  is on track.   Upper Teens are possible over  MT and ND on the morning of the  9th 10th and 11th... with M and U   20s  covering the rest of the  Upper  Plains   into    eastern COL   NEB   MN and  northwest IA.    And these  forecast temps could  drop even further  as the models   begin to see the  actual cold air  in greater  detail.

By the  morning of the  13th  the High  will be over  MO and  southern ILL   Heading for the  VA coast. I do NOT see the frost  getting into the  Lower Plains  at this time  and the  0z Monday GFS  has backed away from that idea  as well. Of course with all this High pressure covering  the   central and eastern   CONUS    the period from OCT  9-10 TO OCT 15   looks   DRY.   

In the 1-15  DAY The cold pattern  rapidly falls apart  as the  powerful Pacific Jet stream   blasts the  Big west Canada  ridge apart  and floods the    western... then central and  eventually  eastern   CONUS with Mild air  by OCT 15.