Japan: A magnitude-5.1 offshore earthquake occurs west of Ryukyu Islands at around 15:01 Dec. 18

Event

A magnitude-5.1 offshore earthquake occurred west of Ryukyu Islands at around 15:01 Dec. 18. The epicenter was about 124 km (77 miles) west-northwestt of Naha. The tremor occurred at a depth of about 114 km (71 miles), and light-to-moderate shaking was probably felt near the epicenter and throughout Ryukyu Islands. There have been no initial reports of damage or casualties as a result of the earthquake; however, significant damage is unlikely. It could take several hours until authorities can conduct comprehensive damage assessments, especially in remote areas. Light aftershocks are likely over the coming days. The event has not prompted any tsunami advisories.

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. Utility outages are possible, particularly near the earthquake's epicenter.

Advice

Out of an abundance of caution, consider vacating multistory buildings where shaking occurred until authorities confirm their structural integrity. Monitor and plan for aftershocks.