The warning affected a narrow, but densely populated area that included downtown Chicago. Flash flooding was seen from the downtown area through the West Side along the Eisenhower Expressway to Oak Park, as the slow-moving storm hovered stubbornly over the area.

A preliminary report into the deadly crash of an Air India jetliner in June is expected to be released by Friday, three sources with knowledge of the matter said, with one adding the probe had narrowed its focus to the movement of the plane's fuel control switches.

Indian forensic investigators have identified all 260 people killed in last month's crash of a London-bound passenger plane, health authorities said Wednesday, ahead of a hugely anticipated preliminary report into what went wrong.

India's benchmark shares were muted on Tuesday after U.S. President Donald Trump delayed implementation of tariffs to August 1 and announced steep import levies on several trading partners, while signalling an India deal was close.

Speculations are rife that an official announcement could be on the cards, with reports claiming that a mini-trade agreement could be finalised.