Millions under record high temperatures this weekend

The video discusses dangerous heat alerts affecting over 100 million people across the US, with severe weather expected in the Midwest, including potential hail and tornadoes. The heat wave is persistent, with high temperatures and oppressive heat indexes. The Northeast and other regions are experiencing extreme heat, with little relief at night. Additionally, tropical activity near Mexico may lead to flooding in South Texas.

What regions in the US are currently experiencing heat alerts?

What are the expected weather conditions in the upper Midwest later today?

How are temperatures expected to change overnight according to the report?

What precautions should people take during extreme heat conditions?

What potential weather event is being monitored in South Texas?