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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 251 km N of Saipan, Northern Mariana Islands

Posted by admin on September 26, 2025 0 Comments

Earthquake location 17.4773S, 145.5966WA light earthquake magnitude 4.2 (ml/mb) strikes 251 km N of Saipan, Northern Mariana Islands (156 miles) on Monday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 145.5966 East, latitude 17.4773 North, depth = 226.479 km. The epicenter of the earthquake was roughly 226.479 km (141 miles) below the earth’s surface. Global time and date of event 01/09/25 / 2025-09-01 10:47:55 / September 1, 2025 @ 10:47 am UTC/GMT. The 4.2-magnitude earthquake has occurred at 10:47:55 / 10:47 am (local time epicenter). Unique identifier: us6000rcuc. Ids that are associated to the event: us6000rcuc.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days six and in the last 365 days fourty-four earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light quakes in the world.

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 251 km N of Saipan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 145.5966° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.4773° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 226.479 km Depth of the event in kilometers.
Place 251 km N 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 2025-09-01 10:47:55 Time when the event occurred. UTC/GMT
Updated 2025-09-26 07:22:31 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 271 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 38 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.232 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 143 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 us6000rcuc Id of event.
Event Code 6000rcuc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rcuc, A comma-separated list of event ids that are associated to an event.

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