Overview

• Flood watches remain in effect across Los Angeles, Ventura, Riverside and San Bernardino counties, with targeted alerts for burn scars in areas such as Altadena and the Pacific Palisades.
• Localized flooding has already occurred in parts of the Inland Empire and desert communities, including a San Bernardino County advisory warning Twentynine Palms and nearby valleys would experience flooding.
• Rainfall is highly variable, with about 0.25 to 0.5 inches common in urban basins and 1 to 2 inches possible in mountains and lower deserts, along with threats of lightning, brief downpours and small hail.
• The most active period has been Wednesday night through Thursday, with showers and isolated storms lingering into Friday before easing, and forecasters note another pulse of tropical moisture remains possible into the weekend.
• Moisture is spreading north with storm chances for the Central Coast and parts of Northern California through Friday, while cooler days, muggy nights and slick roads continue to affect travel, and totals are not expected to meaningfully reduce drought or long‑term wildfire risk.