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California Faces Rising Hurricane Threat
12 Jul
Summary
- California may see more heavy rain and landslides.
- Climate change could increase tropical cyclone impacts.
- Low-income communities may face greater landslide risks.

Hurricanes are historically rare in California, with only a few recorded since the mid-1800s. However, a recent study indicates that climate change may increase the frequency of heavy rain and landslide events in southern California as tropical cyclones venture closer to the coast. This phenomenon is attributed to rising sea surface temperatures and increased atmospheric moisture, which could shorten the interval for hurricane-level rainfall events significantly. Future scenarios suggest that rainfall equivalent to Hurricane Hilary's impact could occur twice as often. The study highlights that heavier rainfall, particularly during the dry season when the ground is parched, poses a significant threat of flooding and landslides in the region. Low-income communities are identified as bearing the disproportionate burden of increased landslide risks. The research also proposes mitigation strategies, including resilient housing policies, participatory urban planning, hazard prevention education, and relocation assistance for high-risk areas.