Sunday, October 10, 2010

Trending Downward for a Few Days

The strong upper ridge that has been over the northern Illinois for the past few days is breaking down.  A backdoor cool front will edge into northeastern Illinois on Monday, and there may be enough instability to generate a couple of widely scattered showers and possibly a thundershower. Chances of any measureable rainfall on Monday are very low.  Other than that it will be partly sunny with an afternoon high in the middle to upper 70's.  A large slow moving upper low over Nebraska tonight with drop southeastward into Arkansas keeping it circulation of showers and thunderstorms far to our southwest.  Skies on Monday will be mostly sunny over northwestern Illinois, and there will be more clouds from north central into northeastern Illinois.  The backdoor front will stall out right over the Stateline on Monday night as a Canadian high drops southeast across Ontario.  On Tuesday it will fade from the picture as a stronger cool front moves into the area on Tuesday night.  It may generate some scattered showers on Tuesday night and early in the morning on Wednesday.  Again, very little rain is expected, and our very dry pattern of the last couple of months will continue as a Pacific high pushes eastward across the Rockies.  The coolest day of the week is expected to be on Thursday, but it will not be that cool.  Temperatures are just expected to be knocked back down to average by that time, and a gentle warming trend will allow temperatures to begin to recover towards 70 degrees for afternoon highs next weekend with mostly sunny skies.
By Meteorologist
Eric Nefstead

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