The storm systems are expected to bring moderate to heavy rainfall, with localized flooding possible in low-lying areas and washes. Residents in central and southern Arizona, including Phoenix, should prepare for potential disruptions due to water accumulation. The wet conditions could also impact Halloween festivities, particularly for those planning outdoor activities. Drivers should exercise caution on wet roads, and those in flood-prone areas should remain vigilant. (Source: AZFamily, published Oct. 28, 2026, 5:29 AM MST)