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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Pagan region, Northern Mariana Islands

Posted by admin on October 20, 2025 0 Comments

Earthquake location 18.6893S, 145.5668WA light earthquake with magnitude 4.1 (ml/mb) was reported Pagan region, Northern Mariana Islands (0 miles) on Monday. The earthquake occurred at a depth of 220.794 km (137 miles). Exact location of event, depth 220.794 km, 145.5668° East, 18.6893° North. The 4.1-magnitude earthquake has occurred at 12:21:34 / 12:21 pm (local time epicenter). Global time and date of event 22/09/25 / 2025-09-22 12:21:34 / September 22, 2025 @ 12:21 pm UTC/GMT. Unique identifier: us6000rhbg. Ids that are associated to the event: us6000rhbg. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 13,000 light quakes in the world each year. 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 three, in the past 30 days eight and in the last 365 days ninety-two earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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: Pagan region, Northern Mariana Islands. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 145.5668° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6893° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 220.794 km Depth of the event in kilometers.
Place Pagan 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 2025-09-22 12:21:34 Time when the event occurred. UTC/GMT
Updated 2025-10-20 10:46:24 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 259 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 3.436 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 128 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 us6000rhbg Id of event.
Event Code 6000rhbg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rhbg, A comma-separated list of event ids that are associated to an event.

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