LONG TERM [Wednesday Night through Sunday]...
After a transitional period on Wednesday and Thursday, the mid and
upper level flow pattern is expected to amplify once again with a
high-amplitude trough evolving over the eastern CONUS by Friday
and Saturday. The 20.12z runs of the ECMWF and GFS differ slightly
on the timing of the cold front associated with the developing
cyclone, but there should be a good chance of rain sometime from
late Thursday into Friday. The surface high, and shallow cold air
mass, that settles into the Southeast region in the wake of the
front next weekend is projected to originate from far NW Canada.
At the very least this looks like a recipe for another widespread
light freeze, with a small chance for the first hard freeze of the
season depending on the eventual strength of the cold front.