Minor earthquake, 3.9 mag has occurred near Maug Islands region, Northern Mariana Islands

A minor earthquake with magnitude 3.9 (ml/mb) was reported Maug Islands region, Northern Mariana Islands (0 miles) on Thursday. Id of earthquake: us6000rcaz. Event ids that are associated: us6000rcaz. The temblor was detected at 15:50:49 / 3:50 pm (local time epicenter). Global time and date of event 28/08/25 / 2025-08-28 15:50:49 / August 28, 2025 @ 3:50 pm UTC/GMT. Exact location, longitude 144.8702° East, latitude 20.4541° North, depth = 186.881 km. The epicenter was at a depth of 186.881 km (116 miles).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days eighteen earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: Maug Islands region, Northern Mariana Islands.

Maug Islands region Northern Mariana Islands

More information

Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	144.8702° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	20.4541° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	186.881 km	Depth of the event in kilometers.
Place	Maug Islands region, Northern Mariana Islands	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-08-28 15:50:49	Time when the event occurred. UTC/GMT
Updated	2025-09-25 13:42:57	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt		The total number of felt reports
CDI		The maximum reported intensity for the event.
MMI		The maximum estimated instrumental intensity for the event.
Alert Level		The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status	reviewed	Indicates whether the event has been reviewed by a human.
Tsunami	0	This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG	234	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	us	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,us,	A comma-separated list of network contributors.
Number of Stations Used	15	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	5.258	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.6 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	125	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mb	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us6000rcaz	Id of event.
Event Code	6000rcaz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rcaz,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag has occurred near Maug Islands region, Northern Mariana Islands

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