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High pressure keeps heavy rains to our south

7-day forecast: Cool this weekend with sprinkles Saturday

High pressure building north of Lake Superior has pushed a cold front into southern Illinois and Indiana. This boundary is forecast to remain nearly stationary through the weekend as the remnants of Tropical Storm Gordon drift toward the mid-Mississippi Valley.

On Friday, moisture within this circulation was already overrunning the front to our south, resulting in drenching rains. Flash flood warnings were issued along the I-72 corridor, from Jacksonville and Springfield, through the Champaign area, where as much as 5 inches of rain was reported by early Friday evening.

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Heavy rain is to continue through early Sunday as low pressure tracks east-northeastward along the stalled front. As much as 10 inches of rain may fall across central and southern portions of Illinois and Indiana. Lighter rain is forecast across the Chicago area, but far south suburban areas may receive 2 to 3 inches of rain by Sunday evening.

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