Multiple fires have broken out near Fallbrook, California, with four burning along State Route 76 and about five more along the northbound Interstate 15 freeway

The boundary changes represent the first updates to the city’s map since 2009. Newly added properties will be subject to stiffer requirements for landowners during peak fire season.

As dangerously hot air bakes parts of the Southwest, forecasters are flagging elevated odds of significant wildland fire activity.