Life-Threatening Flood Warning Hits Central and Southern California
California residents are bracing themselves for a potentially life-threatening flood event as the Weather Prediction Center issues a rare Level 4 risk of excessive rainfall. The warning covers central and Southern California, including Los Angeles, Santa Barbara, and Oxnard. Coastal California, including San Francisco, is also under a Level 3 risk, while the region experiences its first-ever hurricane force wind warning.
Forecasters are predicting widespread rainfall totals of 3 to 6 inches, which is more than a month’s worth of rain for most areas. In fact, Los Angeles typically receives just 2.99 inches of rain in February, making it their wettest month of the year on average. In the mountains and foothills of Southern California, the National Weather Service is expecting up to a foot of rain.
The severity of this flood warning cannot be understated. A Level 4 “high risk” alert is a rare occurrence, issued on fewer than 4% of days per year on average. However, these alerts are responsible for over 80% of all flood-related damage and 39% of all flood-related deaths. It is crucial for residents to take this warning seriously and prepare accordingly.
What makes this event even more concerning is its association with an atmospheric river. This phenomenon involves a moisture plume that originates from the Pacific Ocean, drawing energy from warmer-than-average waters. Dr. Daniel Swain, a renowned climate scientist specializing in Western extremes, explains that heavy rain events like the one unfolding in California are becoming 10% more intense due to the increased fuel provided by a warmer climate.
The potential consequences of this flood event are significant. The National Weather Service in Los Angeles warns that it could lead to extensive road flooding, debris flow over areas previously affected by wildfires, and even mudslides in higher terrain. Creeks and streams are expected to rise rapidly, posing additional risks to residents.
While California is no stranger to severe weather events, the combination of heavy rain, hurricane force winds, and the potential for mudslides has elevated concerns to a new level. Authorities are urging residents to stay informed through local news and official weather updates, and to take necessary precautions to ensure their safety.
As Californians brace for this life-threatening flood event, it serves as a reminder of the increasing intensity and frequency of extreme weather events driven by a changing climate. The need for proactive measures, such as improved infrastructure and disaster preparedness, becomes even more apparent in the face of such challenges.
