Yellow Line service was suspended for roughly two hours during Friday's morning rush hour due to flooding, the Chicago Transit Authority said.
The CTA tweeted the alert just after 8 a.m., encouraging travelers to use the 97 Skokie bus as an alternate route. Service resumed around 10 a.m.
Shuttle bus service was available from both the Dempster and Oakton Street stations to take passengers to the Howard Street station, Skokie police said.
Neither the agency nor police had an estimate on how long Yellow Line service would be halted.
The disruption came as a Flood Warning remained in effect across multiple Chicago-area counties while rain continued to pour.
The National Weather Services issued a Flood Warning for multiple rivers in Illinois and Indiana, impacting several counties. Those locations included:
Des Plaines River near Des Plaines affecting Cook County
Des Plaines River at Riverside affecting Cook County
East Branch Du Page River at Bolingbrook affecting Will County
Fox River at Dayton affecting La Salle County
Fox River at Montgomery affecting Kendall and Kane counties
Vermilion River near Leonore affecting La Salle County
Fox River at Algonquin Tailwater affecting Kane and McHenry counties
Kankakee River at Shelby affecting Lake and Newton counties in Indiana
Kankakee River at Davis affecting La Porte County in Indiana
Flash Flood Watches were also in effect for roughly all of north central Illinois through Friday morning at 7 a.m.
As much as three to four inches of rain fell in some locations beginning Thursday as scattered showers and thunderstorms dampened the first day of summer.
Friday brought little reprieve from the rain, as scattered showers and thunderstorms continued. Temperatures will reach the mid- to upper- 60s before dropping even into the 50s Friday evening.
Saturday looks to be mostly cloudy with an isolated thunderstorm possible, though highs will reach the mid- to upper- 70s.
Dry conditions return Sunday with temperatures warming into the low- to mid- 80s, and those rain-free conditions will likely stay through our next chance for storms on Tuesday night.