Flood in McHenry County, Illinois
Flood April 17, 2026 · McHenry County, Illinois
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Standing water was reported on IL-173 near Oak Grove Rd in Alden.
The wider storm
A line of severe thunderstorms moved across all of northern Illinois during the evening of April 17th producing several tornadoes and wind damage. Large hail occurred across parts of northwest Illinois and flooding occurred across parts of northeast Illinois.
Began near Alden (42.4581, -88.5239).
Other tornadoes from the same storm system
10 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 1334304. Narratives are written by the National Weather Service forecast office that issued the report.
Tornadoes near your address
See every tornado that passed near a place you know, measured to its path.
We couldn’t get your location. Check that location access is allowed for this site, or type an address.