Eight people died when a surprise storm caused dangerous waves on the lake along the California-Nevada border, upending boats and tossing passengers into the frigid water.

The Lake Tahoe boating accident that killed eight people Saturday began with a DoorDash executive’s plan to celebrate his mother’s 71st birthday with family and close friends.

Josh Pickles, 37, of San Francisco, his parents, 73-year-old Terry Pickles and 71-year-old Paula Bozinovich of Redwood City, and his uncle, 72-year-old Peter Bayes, of Lincoln, died Saturday, according to a family statement.