Wettest storm in southern California history leaves at least seven dead and causes hundreds of mudslides | California

The storm that parked itself over southern California for days, unleashing historic downpours that caused hundreds of landslides, was expected to move out of the region after one final drenching Wednesday, but authorities warned of the continued threat of collapsing hillsides.

One of the wettest storms in southern California history unleashed at least 475 mudslides in the Los Angeles area and downed 400 trees in the city after dumping more than 1ft (30cm) of rain in some areas. Across the state, at least seven people died in the extreme weather.

The weather began to relent on Tuesday and…