‘Dangerously hot conditions’: millions in US west prepare for extreme heatwave

Heat warnings are in effect across region as record-high temperatures are forecast in California, Nevada and Arizona

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Millions of people in the western US are preparing for extreme heat as unprecedented temperatures are forecast across California, Nevada and Arizona.

The National Weather Service (NWS) issued a heat advisory for California’s Bay Area and central coast regions as temperatures are expected to reach up to 90F (32C).