Flash Flood in Grundy County, Illinois

Flash Flood April 3, 2026 – April 4, 2026 · Grundy County, Illinois

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A vehicle was reported stuck in flood waters on the exit ramp from Interstate 55 to Route 47.

The wider storm

Heavy rain fell across parts of northern Illinois during the evening of April 3rd into the early morning of April 4th, which caused localized flooding. The heaviest rains fell along the Interstate 55 corridor where an axis of 2 to 3 inches of rainfall occurred.

Began near (dtg) Dwight Airport (41.1098, -88.4238).

Source: NOAA Storm Events Database, event 1320739. Narratives are written by the National Weather Service forecast office that issued the report.

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