Evacuation warnings remained in effect Wednesday in the Highland area as a storm's most powerful round was set to wallop Southern California.

Heavy rain has fallen in the overnight hours across Southern California, prompting evacuation and flood warnings for wildfire burn zones.

A flood watch has been issued for much of Southern California and will remain in place through Thursday afternoon.

The strongest wave of a powerful winter storm reached Southern California overnight, bringing flash flood warnings and dropping snow levels that will affect Thursday’s commute. “Storms ...