US heat dome causes dangerous conditions for more than 100 million people

High temperatures and humidity across north-eastern coast increase risk of heat exhaustion, illnesses and death

More than a 100 million people in the US will face dangerous conditions over the weekend as a heat dome that has scorched much of the center of the country nudges eastward.

Heat advisories were in place on Friday all across the north-eastern coast from Portland, Maine, to Wilmington, North Carolina, with the daytime heat index temperatures 10 to 15F above average in some places.