Overview

• The National Weather Service ended all flash flood warnings and lifted most flood watches for Cook, DuPage and neighboring counties by Sunday afternoon.
• Urban underpasses and low-lying streets are draining after intense weekend downpours overwhelmed city drainage systems.
• A brief storm cell on Sunday prompted a temporary FAA ground stop at O’Hare International Airport and flood advisories through 6 p.m.
• Emergency responders wrapped up vehicle rescues and reiterated safety messages urging motorists not to drive through standing water.
• High pressure is building over the region with a multi-day heat wave set to bring mid-90s temperatures and only isolated storm chances.