Mario’s Moisture Set To Impact Southwest This Week - Videos from The Weather Channel

Mario’s Moisture Set To Impact Southwest This Week

September 17, 2025

The remnants of Mario will bring plenty of tropical moisture into California and Arizona over the next few days. Showers will move into Southern California and Arizona starting Wednesday night, becoming more widespread on Thursday. Rain chances expand northward along the Central Coast and Bay Area Thursday night into Friday. The main concern will be locally heavy rain that could lead to flooding as well as lightning. What to expect here.