The CTA Yellow Line was shut down for nearly two hours because of flooding Friday morning in north suburban Skokie.
All service on the Yellow Line was suspended about 8 a.m. because of flooding on the tracks near Niles Center Road in Skokie, according to CTA spokesman Steve Mayberry.
Shuttle buses operated between the Dempster-Skokie and Howard stations while trains were stopped, but normal service resumed by about 9:45 a.m., Mayberry said.
The National Weather Service issued a flash flood watch for the Chicago area Friday morning in effect until 3 p.m.
Chicago has seen more rain since May 1 this year than the same period in any year since 1871, when officials started keeping records.