Rain was falling across Southern California on Sunday, bringing some relief to thousands of firefighters battling multiple major blazes for nearly a month in the Los Angeles area, but also prompting new threats of floods and mudslides across burn-scarred lands.

After weeks of windy and dry weather, rain has fallen in parched Southern California and is expected to aid firefighters who are mopping up multiple wildfires. But potentially heavy downpours on charred hillsides could bring new troubles such as toxic ash runoff.

U.S. President Donald Trump on Sunday ordered the federal government to override the state of California's water-management practices to bolster firefighting efforts. The executive order comes two days after Trump visited the Los Angeles region,

Newsom and California are frequently the target of Trump’s ire. Some of his most memorable criticisms of the state have been over how it manages its wildlands in the face of wildfire risk. In his first term, Trump suggested California should be “raking” their forests to clean up dead brush and trees.