Tropical Storm Hilary moves on from California, leaving a trail of uncertainties and potential damage in its wake

National Tropical Storm Hilary Moves on from California, Leaving a Trail of Damage and Debris

August 21, 2023 1:32 PM ET

By Emily Olson, Rachel Treisman

A worker from the Coachella Valley Water Department surveys debris flowing across a road following heavy rains from Tropical Storm Hilary, in Rancho Mirage, Calif., on Monday. David Swanson/AFP via Getty Images

Tropical Storm Hilary, the first tropical storm to hit Southern California in over 80 years, began to dissipate on Monday after causing significant damage to the region. The storm, which brought record-breaking rainfall, has now moved on to Nevada with less vigor. However, its impact has left millions of California residents under flood risk warnings, thousands of homes and businesses without power, and major school districts forced to shut down.

Record-breaking Rainfall and Flooding

The storm brought as much as 7 inches of rainwater in some mountain regions and up to 4 inches in lower-lying areas as it moved from northern Baja California in Mexico into the United States. This resulted in extensive flooding across California‘s coast, mountains, and the Coachella Valley, where the city of Palm Springs is located. The National Weather Service Los Angeles reported that the storm had broken “virtually all rainfall daily records,” with downtown Los Angeles experiencing a record rainfall of 2.48 inches.

While emergency responders were able to rescue and evacuate dozens of people, including from a mobile home park in the Coachella Valley and a homeless encampment along the San Diego River, concerns remained for the estimated 75,000 LA County residents who don’t have access to a permanent home or shelter. These individuals are at a disproportionately higher risk of being injured or killed by floodwaters, falling debris, and hypothermia.

Infrastructure Damage and School Closures

The storm caused significant damage to cities, leading to the loss of 911 access and school closures. Cathedral City, Indio, and Palm Springs reported downed 911 lines due to storm damage, and roads were washed out, including the major freeway, I-10. Eisenhower Health, a nearby hospital in Rancho Mirage, experienced flooding in its ambulance bay and was running on a single backup generator. The Los Angeles Unified School District, as well as districts in San Diego, Pasadena, and Coachella Valley, closed all campuses and canceled after-school programs, affecting over half a million students.

Response and Preparation

While there was one storm-related death reported in Mexico, California officials reported no fatalities. This seems to be attributed to the public’s response to preparedness measures and staying home during the storm. LAist reporter Erin Stone mentioned that the “better safe than sorry” approach appeared to be wise. However, the impact of the storm highlights the ongoing vulnerabilities faced by individuals without permanent housing.

Editorial: The Intersection of Natural Disasters and Climate Change

The occurrence of Tropical Storm Hilary in Southern California, a region not traditionally prone to tropical storms, raises questions about the link between climate change and extreme weather events. The storm’s unusual trajectory and intensity can be seen as a symptom of the changing climate, which is leading to more frequent and intense storms.

Scientists have long warned that global warming and rising ocean temperatures contribute to the formation of larger and more powerful hurricanes. The warming of the Pacific Ocean off the coast of Baja California, where Hilary formed, is a clear example of this phenomenon. As UCLA climate scientist Daniel Swain explains, the unusually warm ocean temperatures provided additional fuel for the storm.

This trend of increasing storm activity is expected to continue, with three other tropical storms currently churning in the Atlantic Ocean. The National Oceanic and Atmospheric Administration predicts that this hurricane season will see an above-average number of named storms and hurricanes.

As communities and governments face the increasing threat of natural disasters, it is crucial to acknowledge the role of climate change in exacerbating these events. Taking proactive steps to mitigate climate change and adapt to its effects is essential for the safety and resilience of communities.

Advice: Preparedness and Resilience in the Face of Natural Disasters

The occurrence of Tropical Storm Hilary serves as a reminder of the importance of preparedness in the face of natural disasters. Here are some key takeaways:

1. Stay Informed

Keep track of weather updates and alerts from reliable sources such as the National Weather Service. Follow official instructions and evacuation orders if necessary.

2. Make a Plan

Create an emergency plan for yourself and your family. This includes identifying emergency contacts, establishing a communication plan, and knowing evacuation routes and shelter locations. Prepare an emergency kit with essential supplies, such as water, non-perishable food, medications, and important documents.

3. Protect Your Property

Take measures to protect your property from potential damage. This can include regularly maintaining your home and securing loose items that can be blown away by strong winds. Consider purchasing flood insurance if you live in a high-risk area.

4. Support Vulnerable Communities

Recognize the unique challenges faced by vulnerable communities, such as those without permanent housing. Advocate for policies and initiatives that address their specific needs and ensure their safety during natural disasters.

5. Address Climate Change

Support efforts to reduce greenhouse gas emissions and transition to renewable energy sources. This includes advocating for government policies and taking personal actions to reduce your carbon footprint.

By taking these steps, individuals and communities can enhance their preparedness and resilience in the face of natural disasters, ultimately safeguarding lives and property.