CLEVELAND — Keep the rain gear nearby.

A slow-moving storm system over the Northern Great Lakes will send repeated rounds of showers into Northeast Ohio from Tuesday through Thursday this week. Mid-autumn begins with a familiar setup as the jet stream begins its seasonal shift to a cooler pattern.

A "cut-off low" is what meteorologists call it. It is a pocket of cold air aloft that has broken away from the jet stream. The jet stream typically acts as a highway for storms. Once a low becomes detached, it loses those upper-level winds and stalls or drifts in place. This setup allows showers and clouds to rotate over the same area for several days instead of moving through quickly.

These slow-moving systems are especially common in the fall across the Great Lakes. As colder air begins dr

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