Marianas Earthquake: No Tsunami Threat – Guam Officials
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Guam Earthquake: Recent Seismic Activity and Tsunami Risk
Table of Contents
What Happened?
Guam experienced a series of earthquakes on February 29, 2024. The most significant event was a magnitude 5.0 earthquake that struck approximately 4 kilometers northwest of Dededo Village around noon local time. Earlier in the day, at 9:10 AM, a preliminary earthquake prompted a tsunami threat assessment, which was subsequently lifted. A moderate magnitude 4.8 quake also hit the region.
Details of the Earthquakes
| Date/Time (Local) | Magnitude | Location | Depth | Source |
|---|---|---|---|---|
| February 29,2024,9:10 AM | (Initial report – magnitude varied) | Near guam | (Data unavailable) | Guam Homeland Security and Civil Defense |
| February 29,2024,~12:00 PM | 4.8 | 4 km Northwest of Dededo Village,Guam | (Data unavailable) | Volcano Finding |
| february 29,2024,(Time unavailable) | 5.0 | Near Guam | (Data unavailable) | Volcano Discovery |
Tsunami Threat assessment
Following the initial earthquake at 9:10 AM, Guam Homeland Security and Civil Defense issued a tsunami threat assessment. However, this assessment was quickly updated to indicate that there was no tsunami threat to the Marianas region. This decision was based on analysis of the earthquake’s characteristics and monitoring of sea levels.
Why Does This happen? (Geological Context)
Guam is located in a seismically active region known as the Pacific Ring of Fire. This area is characterized by frequent earthquakes and volcanic activity due to the convergence of several tectonic plates. Specifically, Guam lies near the boundary between the Pacific Plate and the Philippine Sea Plate. The subduction (one plate sliding under another) of these plates generates significant stress, which is periodically released in the form of earthquakes.