Following a violent magnitude 5.3 earthquake in the Pacific, a tsunami threat was issued to California, Oregon, Washington, Alaska, and Hawaii along the west coast of the United States and Canada. Waves surged along the coast. Fortunately, the waves weakened as they traveled. Within a few hours following the initial earthquake, all threats of a tsunami were retracted.
Since California is amongst the most significant points of impact if a tsunami were triggered by a seismic event in the Pacific, California’s earthquake and tsunami response systems have been some of the first to assess the risk.
The earthquake mentioned here today has been documented by USGS, CalTech, EarthquakeTrack, Pacific Northwest Seismic Network, and Alaska Earthquake Observatory – all credible and globally recognized seismic activity monitoring systems. UTC is an abbreviation for Coordinated Universal Time.
Magnitude 5.3 Earthquake Struck the Rat Islands Region of the Aleutian Islands in Alaska: On 5 November 2023 at 1:27 PM UTC, a magnitude 5.3 earthquake struck Alaska at a depth of 81 km.
Magnitude 5.0 Earthquake Struck 129 km East Southeast of Atka, Alaska: On 3 November 2023 at 6:47 AM UTC, a magnitude 5.0 earthquake struck Atka, Alaska, at a depth of 10.7 km.