Some experts predict Californians will migrate to Arizona, and that could impact the already competitive housing market in the state.

Donald Trump signed a wide-ranging executive order demanding federal and state officials deliver more water and other resources to southern California.

If the rain falls at a steady, lighter rate, Southern California could be in good shape. That could mean enough rain to help ease the firefighting strain, but not enough to trigger another potential disaster. Heavier rain could mean the chance for flash flooding or mudslides over fresh burn scars.

Much-needed rain has begun to fall over Southern California, bringing relief to the drought-stricken region but also the threat of toxic runoff.

Much of fire ravaged southern California is under a flood watch after devastating flames have left thousands of acres barren and vulnerable to flash flooding, land and mudslides with rain in the forecast.

The Arizona Humane Society said in a news release that 21 pets were flown from shelters in California to Arizona on Jan. 25. The flight was made possible by Petco Love and Wings of Rescue and allowed shelters in California to free up space for even more displaced pets.

Areas where the Palisades, Franklin, Eaton, Bridge, and Hughes wildfires burned are under a flood watch, the weather service said Sunday. Fresh burn scar areas stand at greater risk of mudslides because they no longer have trees and vegetation providing support to the land, according to AccuWeather Meteorologist Jacob Hinson.

Rain eased on Monday after Southern California's first significant storm of the season brought weekend downpours that aided firefighters but caused ash, mud and debris to flow

The ongoing wildfires in Southern California may intensify the already competitive housing market in Arizona, as experts predict an increase in migration from California.