The peak of the heat wave is expected Thursday and Friday, the National Weather Service said. While it’s brought warmer temperatures than in recent weeks, it is not particularly extreme in terms of all-time Southern California highs. “This is definitely more normal heat for this time of year,” Sam Zuber, an NWS meteorologist said.

As a heat wave hits Southern California, officials are urging residents to conserve energy and stay prepared for potential power shutoffs that could last longer this summer. Southern California Edison says high heat is not the only factor it monitors.