Recent earthquake activity in the United States has been highlighted by a magnitude 3.2 earthquake reported Wednesday morning near Malibu, California. The quake occurred at 9:33 a.m. at a depth of 8.0 miles, sending weak shaking through Malibu and parts of the Westside. The tremor was felt within six miles of Topanga, seven miles from Los Angeles and Santa Monica, and eight miles from Calabasas. This marks another in a series of small earthquakes that have rattled the Los Angeles area in recent months.
Looking at global earthquake activity, the most significant recent event was a powerful magnitude 7.4 earthquake that struck in the Drake Passage near Argentina on May 2, 2025. This quake was centered approximately 220 kilometers south of Ushuaia, Argentina. Following the main shock, the region experienced multiple aftershocks ranging from magnitude 4.9 to 5.7 in the same area.
On May 7, the largest earthquakes worldwide included a magnitude 5.8 tremor along the Central East Pacific Rise and a magnitude 5.5 quake in the Coral Sea, approximately 49 kilometers south of Isangel, Tafea.
Scientists are paying increased attention to earthquake risks along the West Coast. A recent study published in late April warns that a monster earthquake along the Cascadia subduction zone could cause parts of coastal California to sink, significantly heightening flood risks. The study, led by Tina Dura of Virginia Tech, indicates that such an event could cause more than 3 feet of sudden relative sea level rise, permanently altering flood plains for decades or even centuries.
FEMA estimates that a magnitude 9 earthquake along the full 800-mile fault zone could result in 5,800 deaths from the earthquake alone, with an additional 8,000 casualties from the resulting tsunami that could reach heights of up to 80 feet. Economic losses could approach 134 billion dollars.
Radiocarbon dating suggests there have been more than 11 great earthquakes off the shore of California's North Coast, Oregon and Washington state over the last 6,000 to 7,000 years, recurring every 200 to 800 years, highlighting the ongoing risk to these coastal regions.