Hundreds of thousands of Sanborn maps mapped the fire risk of every US city with over 1,000 people in the 20th century.

This year’s statewide fire maps have put large swaths of Half Moon Bay — like parts of downtown Main Street and land to the east of Highway 1, including Frenchmans Creek — in a very high fire hazard ...

Cal Fire added thousands of San Luis Obispo properties to a new map that identified fire-prone areas in California this year - and now those property owners will need to retrofit their homes and yards ...