US braces for ‘dangerous’ conditions as heatwave to hit midwest and north-east

Meteorologists warn that heat will spread east through the week, with heat dome' expected to trap high temperatures

Millions of Americans are facing dangerously hot conditions", the National Weather Service said, with a heatwave set to hit the midwest and north-east US from Monday.

Michigan, Ohio and western Pennsylvania were all under heat warnings starting Monday, with alerts in place until Friday evening. Meteorologists warned that the heat will spread east through the week, with a heat dome" expected to trap high temperatures across New York, Washington DC and Boston.