Typically mild Pacific north-west braces for another blazing heatwave

Officials urge residents to take precautions as forecasts point to temperatures far above historic averages

A searing heatwave is expected to bring dangerously high temperatures to US Pacific north-west - a region known for its mild, temperate summers.

As Oregon, Washington, parts of northern California and British Columbia brace for a week of temperatures well above historic averages, officials are warning residents in the region - many of whom lack air conditioning and are unaccustomed to heat - to take precautions.