12:15 a.m. Earthquake Recorded

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 5.0 that struck 24 km S of Merizo Village, Guam with a depth of 50.6 km, at 11:33 p.m., December 24, 2025 (ChST). 

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to the Marianas from the earthquake. There were no major damages or injuries reported from the earthquake.

9:25 a.m. No Tsunami Threat to Marianas from Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 5.7 that occurred 72 km SSE of San Jose Village, Northern Mariana Islands, with a depth of 99.6 km, at 9:06 a.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to the Marianas from the earthquake. There were no major damages or injuries for Guam reported from the earthquake.

4:00 a.m. No Tsunami Threat to Marianas from Japan Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.6 that occurred 74 km ENE of Misawa, Japan, with a depth of 44.1 km, at 12:15 a.m. (ChST).

 As advised by the Pacific Tsunami Warning Center, there was no tsunami threat to Guam and the CNMI from this earthquake.  

This will be the final statement issued by GHS/OCD unless additional information is received.

7:00 a.m. No Tsunami Threat to Marianas from Alaska Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.0 that occurred 90 km N of Yakutat, Alaska, with a depth of 10.0 km, at 6:41 a.m. (ChST).

 As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to Guam and the CNMI from this earthquake.  

 This will be the final statement issued by GHS/OCD unless additional information is received.

GHS/OCD, NBG, and AAFB to Conduct Routine Testing of Advanced Warning Systems

The Offices of Guam Homeland Security and Civil Defense (GHS/OCD), U.S. Naval Base Guam (NBG), and Andersen Air Force Base (AAFB) will conduct routine testing of the vital communication and advance warning system sirens, respectively, on Tuesday, December 2, 2025, starting at 3:15 p.m.

GHS/OCD will test the All Hazards Alert Warning System (AHAWS) sirens in conjunction with NBG and AAFB monthly routine testing of the “Giant Voice (GV)” sirens.

Earthquake Recorded

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 4.6 that struck 60 km NNE of Yigo Village, Guam, with a depth of 125.8 km, at 4:51 p.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to the Marianas from the earthquake. There were no major damages or injuries for Guam reported from the earthquake.

The Offices of Guam Homeland Security and Civil Defense remind the community that when an earthquake strikes, conduct the earthquake procedure, “Drop, Cover and Hold On” until the shaking stops.

9:10 a.m. No Tsunami Threat to Marianas from Earthquake

The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 5.5 that occurred 16 km ENE of Yigo Village, Guam, with a depth of 102.0 km, at 8:53 a.m. (ChST).

As advised by the Pacific Tsunami Warning Center, there is no tsunami threat to the Marianas from the earthquake. There were no major damages or injuries for Guam reported from the earthquake.

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