San Gabriel Mountains on High Alert: Bracing for Powerful Thunderstorms and Potential Debris Flow

The San Gabriel Mountains face a daunting weather event as strong thunderstorms approach, raising concerns of flash floods and debris flow. Residents urged to exercise caution.

The tranquil beauty of the San Gabriel Mountains is about to be disrupted by the impending arrival of powerful thunderstorms, casting a shadow of uncertainty over the region. With excessive rainfall anticipated, the National Weather Service has issued a flood advisory for the area, warning residents of potential urban and small stream flooding.

The advisory, effective until 4:30 p.m. Sunday, underscores the gravity of the situation. The weather service’s Los Angeles office took to social media to deliver a message of caution, revealing the emergence of strong thunderstorms with hourly rain rates reaching 1 inch. This torrential downpour heightens the risk of flooding in mountain roadways and low-lying areas.

In the wake of recent wildfires, residents residing in or near burn scars were especially encouraged to exercise heightened vigilance and move away from vulnerable zones. The impending rainfall has the potential to trigger shallow mud and debris flows, minor rockfalls, and localized flooding, particularly in steep terrain. Such conditions can result in localized damage, posing a threat to both property and lives.

As the clock ticked, the National Weather Service updated its report, indicating that Doppler radar had detected strong and nearly stationary thunderstorms sweeping across the San Gabriel mountains. From Acton to Falling Springs, these tempestuous storms held the potential for wind gusts of up to 50 mph, accompanied by half-inch hail, frequent lightning, and heavy downpours capable of causing localized flash flooding.

Given the volatile nature of the impending weather event, it is crucial for residents in the vicinity of the San Gabriel Mountains to exercise extreme caution and heed the warnings issued by authorities. Staying informed through reliable sources, such as the National Weather Service, is of paramount importance to ensure personal safety and minimize the risks associated with this formidable weather system.

As the San Gabriel Mountains brace themselves for the deluge, it serves as a poignant reminder of nature’s power and the importance of preparedness. Through collective awareness and responsible actions, residents can navigate this challenging period and emerge with a renewed sense of resilience.