A long-duration heat wave is taking shape over the western half of the U.S. and forecast to stick around in the days ahead.

A historic heat wave is scorching the Central Coast this week — shattering multiple heat records across San Luis Obispo County.

A day after a tiny desert community in Southern California reached 108 degrees (42.2 Celsius), tying the highest March temperature ever recorded in the U.S., forecasters warned Thursday that record-br...