A woman packs up after resting in a shaded area alongside the Salton Sea as a record-breaking winter heat wave continues across the Southwest, Thursday, March 19, 2026, near North Shore, Calif. (AP Photo/Gregory Bull)

Mike Lillelund carries his belongings as he walks along a road as a record-breaking winter heat wave continues across the Southwest, Thursday, March 19, 2026, in Thermal, Calif. (AP Photo/Gregory Bull)

Rubin Pantaleon stays in the shade while waiting for work washing car windshields as a record-breaking winter heat wave continues across the Southwest, Thursday, March 19, 2026, in Thermal, Calif. (AP Photo/Gregory Bull)

City of Phoenix Park Ranger Sam Weller directs hikers away from a trailhead closed due to extreme heat at Camelback Mountain on Thursday, March 19, 2026, in Phoenix. (AP Photo/Rebecca Noble)

A sign warns hikers of trail closures due to extreme heat at Camelback Mountain on Thursday, March 19, 2026, in Phoenix. (AP Photo/Rebecca Noble)

Enrique Martinez carries his 11-year-old dog Pepe so it doesn't have to walk on the hot sand at Crissy Field in San Francisco, Tuesday, March 17, 2026. (AP Photo/Godofredo A. Vásquez)

A man runs past at Crissy Field, backdropped by the Golden Gate Bridge in San Francisco, Tuesday, March 17, 2026. (AP Photo/Godofredo A. Vásquez)

A jogger runs past as a man sunbathes at Crissy Field in San Francisco, Tuesday, March 17, 2026. (AP Photo/Godofredo A. Vásquez)