It was called the biggest and strongest rainstorm to hit the Bay Area in a quarter century, but last October's "bomb cyclone" event may be just a preview of what climate change will bring to the Bay Area in the coming decades.

The City of San Francisco commissioned a new study from Lawrence Berkeley National Laboratory that looks ahead to the ways that "extreme precipitation" in the coming decades will impact the Bay Area. And it's the first study of its kind to take the unique topography of the local region into account, forecasting impacts based on two-square-mile segments — compared to earlier studies that looked at the singular impacts for the entire region.

The study projects that storms like the one in October will dump 26% to 37% more water on the Bay Area, when they hit, by the end of the century. The study looked at various storm types and atmospheric river combinations to estimate total storm precipitation totals from 2050 and beyond.

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