U.S. Geological Survey News

California Railroad Testing Use of Quake Alerts to Halt Trains

A Southern California regional passenger rail service announced that it is testing technology that will use the West Coast’s earthquake early warning system to automatically slow or stop trains before shaking begins. The five-county Metrolink system said the technology is …

M4.1 Earthquake Confirmed in San Francisco Bay Area

A magnitude 4.1 earthquake gave the San Francisco Bay Area an early morning wake-up call Thursday. The U.S. Geological Survey confirmed the 4:07 a.m. quake struck several miles northwest of Bay Point at a depth of 12.2 miles. The area …

Earthquakes Recorded Near Long-Dormant Alaska Volcano

Hundreds of small earthquakes have been reported near a volcano in southeast Alaska believed to have been dormant for at least 800 years, the U.S. Geological Survey confirmed The cause of the quakes under Mount Edgecumbe, a volcano near Sitka …

Magnitude 4.1 Earthquake Confirmed in California

A magnitude 4.1 earthquake rattled an inland region of San Diego County on Sunday morning, the U.S. Geological Survey confirmed. The quake hit at 9:46 a.m. near Palomar Observatory, about 65 miles northeast of downtown San Diego, USGS said. A …

Magnitude 5.1 Earthquake Confirmed in Southern Alaska

A magnitude 5.1 earthquake struck southern Alaska, and people reported shaking in Anchorage and surrounding areas, according to officials. The epicenter of Thursday’s quake was 49 kilometers, or 30 miles, northwest of Ninilchik, Alaska, the U.S. Geological Survey said. That …

Magnitude 4.3 Earthquake Shakes North-Central Kansas

A moderate earthquake shook parts of north-central Kansas on Dec. 8 as residents were starting their day, officials said. The U.S. Geological Survey says a magnitude 4.3 earthquake was recorded around 7:45 a.m. Wednesday, with the epicenter just southwest of …

Pair of Earthquakes Confirmed on California’s Central Coast

A pair of earthquakes rattled California’s central coast late Monday afternoon, the U.S. Geological Survey confirmed. A magnitude 4.7 quake hit at 4:42 p.m., centered about 11 miles northwest of San Simeon, according to. At 4:49 p.m., a 3.6 magnitude …

Small Earthquake Confirmed in Southern California

A small earthquake near downtown Los Angeles on Sunday morning was felt widely across Southern California, the U.S. Geological Survey confirmed. The magnitude 3.6 quake hit just after 7 a.m. and was centered about a mile south-southeast of the Boyle …

No Injuries as 4.3M Earthquake Rattles Los Angeles

A small earthquake shook the greater Los Angeles metropolitan area Friday night, the U.S. Geological Survey confirmed. There weren’t any immediate reports of major damage or injuries. The magnitude-4.3 quake struck shortly after 7:58 p.m. and was centered near Carson, …

Explainer: Is Hawaii’s Kilauea Volcano Going to Erupt Again?

The ground at the summit of Kilauea volcano in Hawaii has been rumbling and swelling in recent days, prompting scientists to warn that the mountain could once again disgorge lava. But there’s no indication an eruption is imminent. The volcano, …