Sweltering heat is shattering records, triggering power outages across California

A Stage 3 emergency alert was declared around 6:30 p.m. by the California Independent System Operator, which runs the state’s power grid. The agency has not declared a statewide emergency of this kind since 2001.

More than 300,000 customers in both Northern and Southern California were without power at points Friday evening, according to one power outage tracker. By 10 p.m. power had been restored statewide.

Across the country, some 150 million people are set to experience temperatures hotter than 90 degrees over the next week, and 50 million of those forecast to experience temperatures over 100 degrees.

NBC Sweltering heat is shattering records, triggering power outages across California