Multiple wildfires, including the Palisades Fire and Eaton Fire, are raging across southern California Thursday, leaving at least 5 dead and burning more than 27,000 acres, officials say. Police have arrested 20 suspected looters.

The wildfires that destroyed homes in multiple sections of the Los Angeles area will test California’s efforts to stabilize the state’s insurance marketplace after many insurers stopped issuing residential policies due to the high fire risk.

The massive Palisades Fire broke out in Los Angeles on Tuesday afternoon, prompting mandatory evacuations affecting tens of thousands of people and highway closures. Later Tuesday, the Eaton Fire broke out in the foothills of Pasadena on the other side of Los Angeles County.

Water experts dismissed Trump’s claims that California water policy is to blame for dry hydrants. But Los Angeles is also unprepared for the age of urban wildfires.

As wildfires become increasingly common in urban areas, public water systems are often unable to meet the firefighting demand.

Some Los Angeles fire hydrants have run dry as demand soared for water to quell wildfires that broke out across the county.

Reports of fire hydrants running dry as crews battled the Palisades Fire has raised questions among residents and fire officials in San Diego County whether it is something that could happen here when the region gets next major wildfire — and what can be done about it.