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Sensors at Fortuna detected the earthquake at 02:34 and issued warnings as far as the California–Oregon border, south of San Jose, past Shasta County and to Medford, Oregon. The warning issued was the most widespread since the system went public in 2019. [ 27 ]
The 1992 Cape Mendocino earthquakes (or 1992 Petrolia earthquakes) occurred along the Lost Coast of Northern California on April 25 and 26. The three largest events were the M7.2 thrust mainshock that struck near the unincorporated community of Petrolia midday on April 25 and two primary strike-slip aftershocks measuring 6.5 and 6.6 that followed early the next morning.
The Cascadia subduction zone is a 960 km (600 mi) fault at a convergent plate boundary, about 100–200 km (70–100 mi) off the Pacific coast, that stretches from northern Vancouver Island in Canada to Northern California in the United States. It is capable of producing 9.0+ magnitude earthquakes and tsunamis that could reach 30 m (98 ft).
PG&E crews restored power to "essentially all" of the 71,000 customers who had lost service across Humboldt County, a day after a 6.4 earthquake hit the region.
A fault off the Pacific coast could devastate Washington, Oregon and Northern California with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.
Aug. 1—The United States Geological Survey (USGS) reports a 4.0 magnitude earthquake occurred off the Oregon Cast near Port Orford at about 12:30 p.m. Tuesday, Aug. 1. This is the second such ...
The McDermitt Caldera is a large, oval-shaped caldera west of McDermitt in southeastern Oregon and northern Nevada in the United States. It is about 28 miles (45 km) long north–south and 22 miles (35 km) wide east–west. [3] The western part of the caldera is in the Trout Creek Mountains, and the northern part is in the Oregon Canyon ...
The 2010 Eureka earthquake occurred on January 9 at 4:27:38 pm PST offshore of Humboldt County, California, United States. The magnitude was measured 6.5 on the Mw scale, and its epicenter was located offshore in the Pacific Ocean 33 miles (53 km) west of the nearest major city, Eureka. [1][6][7][8] Additionally, there was a separate earthquake ...