Forecast updated 7:10 pm EDT - 9 Nov 2011
Following the colder temperatures affecting much of the Midwest by the end of the short term period, a large region of strong WAA develops.This will act to drive weekend high temperatures into the upper 50's. Today's 18Z GFS run (below) shows this warm air advection building in a thermal ridge across the IL/IN/OH/MI region. Otherwise, dry conditions are expected across this region through Saturday with the next chance of rain arriving Sunday.
Today's 18Z GFS run shows this rain chance Sunday at 12Z. It is associated with a large cold front that will begin moving through the region which will bring with it the next shot of colder air.
With the passage of this next system, GFS shows the development of a very strong upper level jet streak over the Midwest. The precipitation associated with this is expected to be primarily along the southwest region of the streak (right-rear entrance region).
today's long-range forecast graphic was produced by Ryan Meiszberg