Atmospheric River Puts Southern California Burn Scars to the Test

On October 15, 2025, a powerful atmospheric river storm swept through Southern California, bringing heavy rain, strong winds, and even tornado warnings to the region. The storm, which was the first significant rainfall of the water year that began on October 1, dumped over 3 inches of rain in some areas, including Woodland Hills.

The storm posed a significant challenge for the region's burn scars, which were left behind by recent wildfires. Burned soil repels water, making these areas more susceptible to damaging debris flows. Authorities in Los Angeles and Orange County worked to prepare vulnerable areas, issuing evacuation orders and deploying emergency response teams.

While the storm caused some disruptions, including the closure of a school in Pacific Palisades and the collapse of a movie studio roof, it may have also helped stave off other problems. The rain helped soak the landscape, delaying the start of the wildfire season by weeks or even months. Experts say that if another storm arrives in the coming weeks, the fire season could be pushed back even further.

However, the storm was not without its consequences. Flooding and downed trees were reported across Los Angeles and Ventura counties, and authorities were investigating a suspected body found floating in the Santa Ana River. The storm also prompted rare tornado warnings in some areas, though it was unclear if a tornado actually formed.

As the storm moves out of the region, Southern California is expected to return to its characteristically moderate climate, with pleasant temperatures in the 70s by Thursday.