As we head into the start of the work week, most of the region remains dry until tomorrow. Although, the only thing to keep in mind for today is a slight chance for an isolated shower or two. A mid-level system
that is currently over Idaho this morning will pivot across the Great Plains and
Midwest by early Tuesday. Futuretrack has a large complex of
thunderstorms, or what we call a Mesoscale Convective System (M.C.S), developing overnight into early tomorrow morning across
Iowa.Typically, these systems are known for their damaging wind gusts and heavy rainfall. This storm system looks makes a run at northern Illinois, but model guidance keeps it south of I-80. We seem to be on the northern fringe of the M.C.S as it tracks southeastward into central Illinois. The Storm Prediction Center has introduced a SLIGHT RISK (level 2 of 5) that does include a few of our southern counties and extends all the way through southern Illinois.The rest of the region remains in a MARGINAL RISK for severe weather (level 1 of 5).
Thunderstorms that blast through the area tomorrow morning will
signal a return to cooler weather. The heart of the cooler air likely
doesn’t make it into the region tomorrow, as highs are expected to be in
the mid and upper 80’s And with wind flow at the surface still remaining out of the southwest through the day, its going to feel very humid at times. However, a break from the humidity is on the way. A cold front that is set to pass through Wednesday morning will bring a fall-like air mass to the region by mid-week. Especially by the second half of
the week. Highs will be near 82 Wednesday with a mix of sun and clouds followed
by highs in the upper 70’s by Thursday and Friday with much lower
humidity.
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