Heavy rain and flash flooding overnight left major streets across the Chicago area waterlogged Tuesday morning, forcing traffic delays and CTA bus reroutes.

The Chicago area is under a flood watch following a weekend of severe thunderstorms and flash flooding throughout the city and suburbs, bringing downed trees and other damage. The watch, which the National Weather Service issued just before 2:30 p.

Storms slammed a number of Chicago suburbs Monday evening, dumping several inches of rain and causing flooding throughout the region. Across the area, a number of roads, streets and underpasses were closed,

Damaging storms brought heavy rain that flooded roadways overnight, especially on the city's Southwest Side that saw flooding last month. Thousands of ComEd customers were without power for hours in the Chicago area.

Flash flooding has causes devastation in recent months in Chicago and multiple aldermen are asking Mayor Brandon Johnson for financial help to assist families affected.

Parts of the Chicago area were inundated by nearly six inches of rain in mere hours overnight, causing flash flooding across the region.

A flash flood watch is in effect until midnight Wednesday in Cook, DuPage and Will counties, plus some parts of northwest Indiana, the National Weather Service said.

CBS News Meteorologist Kylee Miller says we still can't rule out having an isolated storm pop up during the afternoon.

Strong storms moving through the Chicago area on Monday could bring high winds, heavy rain and flash flooding.ABC7 Chicago is now streaming 24/7. Click here to watchA Severe Thunderstorm Warning is in effect for Cook,

The National Weather Service has issued a flood watch in effect until 4 a.m. Tuesday. Residents are urged to reduce water use to ease pressure on the sewer system. City Council members on the Southwest Side call on the mayor to speed flood response.

The city announced the technology after heavy rain and storms damaged homes and left cars submerged on the South and Southwest Sides in July.