The severe weather poses significant risks to residents in Arizona and Southern California. In Arizona, areas under Level 3 risk, including Flagstaff and Prescott, could experience tornadoes, large hail, and flash flooding. Central Arizona cities like Phoenix, Glendale, and Scottsdale are under a Level 2 risk, with intense thunderstorms expected. Southern California faces heavy rainfall and localized flash flooding, particularly in areas with wildfire burn scars. The broader Southwest region, including parts of Utah, Colorado, and New Mexico, is under a Flood Watch through Thursday. These conditions could disrupt travel, damage property, and pose safety hazards.