Updated 10.09.21 @ 9:30a

After a mostly dry, sunny, and unseasonably warm weekend, our next storm system will approach as we kick off the work week. Southerly winds will usher in an unseasonably moist airmass to combine with August-like temperatures (highs once again are expected to shoot into the lower and middle 80s).

The Storm Prediction Center (SPC) outlines the western Ohio Valley, including most of Indiana, into the central Great Lakes region for a Slight Risk of severe weather Monday.

A surface wave is expected to develop along the pressing cold front Sunday evening and track northeast into the Great Lakes. After a warm, dry, and breezy start to Monday, a line of thunderstorms should develop late Monday morning or early afternoon across western IL. This line will then track east and move into Indiana during the late afternoon and evening hours.

Given some of the ingredients in place, the primary concern with this line of storms will be the potential of damaging straight line winds. There also is the potential of a couple rotating storms within this overall line of storms that could pose an isolated tornado threat.

After the stormy time of things Monday PM (rainfall amounts should check-in between 0.50″ and 1″ for most), conditions will improve as we move through the day Tuesday. Another (weaker) system will push into the area midweek, but as of now this doesn’t look like a significant event.

A stronger cold front will arrive to close the week with more widespread rain. After an unseasonably warm stretch, cooler air should finally filter into the region next weekend.