This week's storm caused trees to topple across the Bay Area, including a giant eucalyptus tree that came close to injuring a family in Oakland.
Tony Wagner, his wife and newborn baby were asleep in their Oakland apartment when the tree came crashing down overnight.
"A huge crash," Wagner said. "A huge thunderous crash coming into the bedroom."
In another incident in Oakland, the top of a tall palm tree snapped off in the wind and fell to the street. Two other towering trees in the area appear ready to follow suit.
In Guerneville, a tree came down on two cars Thursday.
"They can be killers," arborist David Nelson said.
Nelson fears the El Niño-fueled storm season, coupled with drought-weakened trees, could be a disaster in the making. Nelson said water-starved trees have become sick unstable.
"There's a lot of trees out there that are weakened that are just waiting for something like this to happen," Nelson said.
Warren said what happened to his apartment should serve as a wake-up call to everyone in the Bay Area who lives near big trees.
"This is a serious issue and if it doesn't get resolved something worse can happen," Wagner said.