The heavy rainfall poses a significant risk of flash flooding, especially in areas with burn scars and narrow canyons. Travelers in national parks and outdoor areas should remain vigilant, as debris flows and landslides are possible. Saturated soils will exacerbate flooding risks, and severe weather, including large hail, gusty winds, and isolated tornadoes, is expected in parts of Arizona, southern Utah, and western New Mexico. In higher elevations, snowfall could create hazardous travel conditions, particularly in the Sierra and Rockies, where up to a foot of snow may accumulate in isolated areas.