As parts of the Midwest continued to experience catastrophic flooding overnight and into Monday, dangerous heat and humidity are expected to set in this week.

Yellow warnings have been issued by the Met Office for thunderstorms and hail on Monday, with a chance of up to 50mm of rain within a single hour.

The National Weather Service issued Extreme Heat Watches and Flood Advisories throughout Illinois. Here's the forecast.

The National Weather Service issued Extreme Heat Watches and Flood Advisories throughout Illinois. Here's the forecast.

The threat of flash flooding on Sunday afternoon was focused over parts of the Midwest, where flood watches have been posted ...