21 Dec 2022 | 03:30 AM UTC
US: Power outages, aftershocks, infrastructure damage ongoing following magnitude-6.4 earthquake off northern California Dec. 20 /update 2
Power outages, damage reported following magnitude-6.4 earthquake off northern California, US, Dec. 20. Multiple aftershocks occurring.
Event
Power outages, aftershocks, and infrastructure damage are ongoing as of the evening of Dec. 20 following a magnitude-6.4 earthquake that occurred off the coast of northern California at around 02:34 Dec. 20. The epicenter was about 12 km (7 miles) west-southwest of Ferndale. The tremor occurred at a depth of about 16 km (10 miles), and strong-to-moderate shaking was probably felt in areas close to the epicenter, as well as light shaking across much of northern California and parts of southwestern Oregon. More than 57,000 customers in California are without power, mostly in Humboldt County, as of afternoon Dec. 20. According to the United State Geological Survey (USGS), there have been more than 80 aftershocks since the initial quake, including one of magnitude-4.9, around 7 km (5 miles) west-northwest of Rio Dell. Further light-to-moderate shocks are likely over the coming hours and days.
At least two people have been killed and 12 injured due to the earthquake. Reports indicate extensive damage to homes and roads throughout Humboldt County, although authorities are still conducting comprehensive assessments. The Fernbridge on US Highway 101 has been closed following damage reports. Rio Dell has lost access to running water due to damage to infrastructure. The temblor has not triggered a tsunami warning.
Officials may temporarily shut down transportation infrastructure in the tremor zone to check for damage. Minor disruptions could occur during shutdowns, but service will likely resume quickly if no damage is found. Further utility outages are possible, particularly near the earthquake's epicenter.
Advice
Plan accordingly for aftershocks. Consider vacating multistory buildings if operating in affected areas until authorities confirm their structural integrity. Allow additional time for air and road travel, as aftershocks may prompt brief disruptions. Seek updated information on road conditions before driving in hilly areas in the affected region due to potential landslides.
