Isolated downpours and thunderstorms could bring localized areas of flash flooding to parts of far southern California and Arizona for Sunday. Any burn scar areas will be especially prone to dangerous flash flooding which could trigger debris flows and mudslides. Burned soil lowers the threshold for flash flooding, meaning even lower rainfall totals can lead to significant flash flooding and other impacts, which unfold quickly. Over the last couple of days, heavy rain and flash flooding drenched the Southwest and even became deadly in one instance. If it does become a hurricane, Gabrielle would become the 2nd hurricane of the 2025 Atlantic hurricane season.