Light earthquake, 4.5 mag was detected near Saipan in Northern Mariana Islands

A light earthquake magnitude 4.5 (ml/mb) has struck on Monday, 33 kilometers (21 miles) from Saipan in Northern Mariana Islands. The epicenter of the earthquake was roughly 62.592 km (39 miles) below the earth’s surface. Global time and date of event 28/07/25 / 2025-07-28 08:06:07 / July 28, 2025 @ 8:06 am UTC/GMT. Exact location of event, longitude 146.0652 East, latitude 15.2311 North, depth = 62.592 km. The 4.5-magnitude earthquake has occurred at 08:06:07 / 8:06 am (local time epicenter). Event ids that are associated to the earthquake: us6000qz69. Id of event: us6000qz69. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearby country/countries that might be effected, Northern Mariana Islands (c. 54 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was San Jose Village, Saipan (min 5000 pop). The epicenter was 33 km (21 miles) from Saipan (c. 48 200 pop), 56 km (35 miles) from San Jose Village (c. 15 000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days twenty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 33 km E of Saipan, Northern Mariana Islands. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	146.0652° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	15.2311° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	62.592 km	Depth of the event in kilometers.
Place	33 km E of Saipan, 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	2025-07-28 08:06:07	Time when the event occurred. UTC/GMT
Updated	2025-08-13 09:26:56	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	312	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	31	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.264	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.53 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	95	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	us6000qz69	Id of event.
Event Code	6000qz69	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qz69,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.5 mag was detected near Saipan in Northern Mariana Islands

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