US: Magnitude-5.0 offshore earthquake occurs near Andreanof Islands, Alaska, at around 23:22 Feb. 28

A magnitude-5.0 offshore earthquake occurred near the Andreanof Islands in Alaska at around 23:22 Feb. 28. The epicenter was about 106 km (66 miles) south-southwest of Adak. The tremor occurred at a depth of about 19 km (12 miles), and light-to-weak shaking was probably felt throughout much of the Andreanof Islands. There have been no initial reports of damage or casualties as a result of the earthquake, and 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.