Earthquakes in the United States: latest seismic records from January 23 according to USGS

Earthquakes represent one of the most unpredictable natural phenomena in North America. In U.S. territory, including cities like New York and many other regions, seismic activity requires constant monitoring and citizen preparedness. According to the latest data from the United States Geological Survey (USGS), over the past 24 hours, a significant number of tremors have been recorded at various points across the country, with notable variations in their magnitude and intensity.

Seismic Activity on January 23: Overview in the U.S.

From January 22 to 23, the USGS reported 21 earthquakes in the North America and Caribbean region with magnitudes greater than 2.5. Of these, four quakes occurred on the U.S. mainland. The most notable was recorded near Evanston, Wyoming, with a magnitude of 4.7, approximately 40 kilometers from that location. This event stands out as the strongest among those recorded on the continental area during this period.

Seismic activity was mainly concentrated in two high-risk regions: Alaska, where multiple tremors of various magnitudes were recorded, and the western part of the continent, including Nevada, California, and Wyoming. Earthquake activity was also documented in Puerto Rico, confirming that tectonic instability affects different areas of U.S. territory.

Detailed Earthquake Records: Locations and Magnitudes

In Alaska, the following seismic events were recorded:

• South of Shungnak: magnitude 2.8 (January 23, 11:19 UTC)
• Northwest of Ninilchik: magnitude 2.5 (January 23, 09:55 UTC)
• Southeast of Attu Station: magnitude 5.0 (January 23, 08:25 UTC)
• Southeast of Chiniak: magnitude 3.1 (January 23, 08:08 UTC)
• Southeast of Kokhanok: magnitude 2.6 (January 23, 07:14 UTC)
• Southeast of Sand Point: magnitude 3.4 (January 23, 03:49 UTC)
• South of Cantwell: magnitude 3.2 (January 23, 00:39 UTC)
• Southeast of Sand Point (later event): magnitude 5.2 (January 22, 19:38 UTC)
• Northeast of Pedro Bay: magnitude 2.6 (January 22, 17:59 UTC)
• Northwest of Tatitlek: magnitude 3.2 (January 22, 15:53 UTC)
• West of Clam Gulch: magnitude 2.8 (January 22, 14:14 UTC)

In other regions of the country:

• West of Gerlach, Nevada: magnitude 2.5 (January 23, 09:13 UTC)
• West of Ferndale, California: magnitude 2.7 (January 23, 01:53 UTC)
• Southeast of Evanston, Wyoming: magnitude 3.0 (January 22, 18:22 UTC)
• South of Evanston, Wyoming: magnitude 4.7 (January 22, 14:49 UTC)
• Southwest of Central Aguirre, Puerto Rico: magnitude 2.7 (January 23, 05:17 UTC)

Alaska led in the number of recorded events, demonstrating itself as one of the most tectonically active zones in the country. Earthquakes in this region frequently exceed magnitudes of 2.5, reflecting its location at a plate convergence zone.

Understanding Earthquakes: Why Do They Occur in the U.S.?

The United States is situated in a geologically active region. The movement of the Pacific and North American plates generates constant tension, especially in areas like Alaska, California, Nevada, and Wyoming. The USGS continuously monitors these areas with a network of seismographs that record even the slightest movements.

The magnitude of an earthquake indicates the energy released during the event. A magnitude of 2.5 is generally not felt by people, while magnitudes between 4.0 and 5.0 can cause noticeable vibrations and, in some cases, moderate structural damage. Earthquakes recorded in New York and other eastern regions are less frequent due to their location farther from tectonic plate edges.

Safety Recommendations During an Earthquake

Although it is not possible to predict exactly when a quake will occur, preventive measures can safeguard people’s safety and property.

Pre-Event Preparation:

• Develop a clear evacuation plan and practice it regularly with family or colleagues
• Prepare a first aid kit with basic medicines, disinfectants, bandages, gauze, and hydrogen peroxide
• Store identification documents in a waterproof box
• Identify safe zones in homes and workplaces

During an Earthquake:

• If the seismic alert sounds, immediately follow safety brigade instructions
• Evacuate the building in an orderly manner if possible
• If on a high floor with no evacuation options, go to designated safe zones
• Stay away from windows, stairs, elevators, and objects that may fall
• Remain calm and assist others if needed

After the Seismic Event:

• Wait for instructions from authorities and emergency teams before reuniting in affected areas
• Check the physical and emotional well-being of all family members
• Use text messages instead of phone calls to avoid overwhelming emergency lines
• Report structural damages to relevant authorities

Knowing these measures is essential for residents in active seismic zones, whether in Alaska, Nevada, California, New York, or other parts of the United States. Preparedness can make the difference between a surprising event and an organized response to an earthquake.