Overview

• The National Weather Service issued a 5:22 a.m. PDT flash flood warning for Riverside and Imperial counties, noting 1 to 1.5 inches of rain had fallen with up to 0.5 inches additional possible and naming Bombay Beach, Calipatria, Slab City, Niland and Imperial Hot Mineral Springs as impacted locations.
• Daytime flood watches are in effect today for parts of Riverside County and nearby desert zones, with NWS offices warning that excessive runoff could flood rivers, creeks, streams, urban areas and low‑water crossings.
• An updated flash flood warning Friday covered San Bernardino County, CA, and Clark County, NV, where NWS Las Vegas reported thunderstorms producing heavy rain and flash flooding ongoing or expected shortly.
• Separate flood alerts persist outside the Southwest, including a flood warning for Lake and Volusia counties in Florida with minor flooding on the St. Johns River near Astor and a Friday evening flood advisory for Dale, Geneva and Houston counties in southeast Alabama.
• Officials stress the guidance to avoid driving through floodwater, direct residents to CalTrans for road‑closure updates, urge sign‑ups for county alert systems and note limited free sandbags may be available from local fire departments.