An area of low pressure is setting up just off the coast of Southern California and will bring another round of unseasonable rain and potential flooding to the region, as well as parts of Arizona and the lower Colorado River Basin. This comes just a few days after the remnants of Tropical Storm Mario brought a surge of moisture into Southern California and parts of the Southwest, resulting in deadly flash flooding. … While more rain is expected across the region beginning Monday, the highest potential for flash flooding in parts of Southern California will occur Tuesday and Wednesday.

Other weather and flooding news:

• SFGate: How wildfire triggered devastating mudslide in Southern California
• The Guardian (U.K.): Weather tracker: Flash floods and landslides wreak havoc in California
• Fox Weather: Remnants of Mario trigger deadly flash flooding, mudslides as rain surged across Southern California
• The Mendocino Voice (Calif.): New FEMA flood maps expand risk zones in Ukiah, could raise costs for homeowners