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Moderate earthquake, 5.1 mag was detected near Nikolski in Alaska

Posted by admin on September 4, 2025 0 Comments

Earthquake location 52.2163S, -169.4986WA moderate earthquake magnitude 5.1 (ml/mb) has struck on Thursday, 91 km SSW of Nikolski, Alaska (57 miles). The 5.1-magnitude earthquake was detected at 19:01:10 / 7:01 pm (local time epicenter). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Event id: us7000qtvy. Ids that are associated to the earthquake: at00t22vi3, us7000qtvy, ak025bct27di. Exact time and date of event in UTC/GMT: 04/09/25 / 2025-09-04 19:01:10 / September 4, 2025 @ 7:01 pm. A tsunami warning has been issued near Nikolski in Alaska (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, -169.4986° West, 52.2163° North, depth 10 km.

In the past 24 hours, there have been eight, in the last 10 days ten, in the past 30 days fourteen and in the last 365 days one hundred and eighty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. There are an estimated 1320 moderate earthquakes in the world each year.

Did you feel anything?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 91 km SSW of Nikolski, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -169.4986° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.2163° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 91 km SSW of Nikolski, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-04 19:01:10 Time when the event occurred. UTC/GMT
Updated 2025-09-04 19:17:58 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 The maximum reported intensity for the event.
MMI 2.921 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 1 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 400 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 ,at,us,ak, A comma-separated list of network contributors.
Number of Stations Used 79 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.853 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.23 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 139 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 us7000qtvy Id of event.
Event Code 7000qtvy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00t22vi3,us7000qtvy,ak025bct27di, A comma-separated list of event ids that are associated to an event.

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