Overview

• The National Weather Service issued life-threatening flash flood warnings on July 18 across San Bernardino and Los Angeles counties after storms dropped up to 2 inches of rain with rates reaching 1.25 inches per hour.
• Roughly 28,000 residents in San Bernardino County and about 60 in Los Angeles County were urged to move to higher ground and avoid flooded roads and burn scar areas prone to debris flows.
• Los Angeles Fire Department crews and the Sierra Madre Search and Rescue Team conducted aerial rescues of 14 hikers injured by sudden floods along the San Gabriel River near Camp Williams.
• Most flash flood warnings expired by the morning of July 19, but scattered showers forecast into Saturday keep the threat of rapid flooding in narrow canyons and low-lying crossings.
• Officials advise residents to monitor NWS alerts, steer clear of flood-prone zones, and remain vigilant around recent wildfire burn scars to reduce rockslide and mudslide risks.