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Moderate earthquake, 5.4 mag was detected near Nikolski in Alaska

Posted by admin on September 6, 2025 0 Comments

Earthquake location 52.3501S, -169.5398WA moderate earthquake magnitude 5.4 (ml/mb) strikes 80 km SW of Nikolski, Alaska (50 miles) on Saturday. The temblor was picked up at 20:40:41 / 8:40 pm (local time epicenter). Exact location, longitude -169.5398° West, latitude 52.3501° North, depth = 23.991 km. Event ids that are associated to the earthquake: at00t26pfw, us7000qug7, ak025bg4yqy0. Id of event: us7000qug7. The earthquake occurred at a depth of 23.991 km (15 miles). A tsunami warning has been issued near Nikolski in Alaska (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 06/09/25 / 2025-09-06 20:40:41 / September 6, 2025 @ 8:40 pm.

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

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 80 km SW of Nikolski, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.4 mb The magnitude for the event.
Longitude -169.5398° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.3501° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 23.991 km Depth of the event in kilometers.
Place 80 km SW 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 2025-09-06 20:40:41 Time when the event occurred. UTC/GMT
Updated 2025-09-06 20:52:55 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 3.377 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 449 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 59 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.75 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.11 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 80 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000qug7 Id of event.
Event Code 7000qug7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00t26pfw,us7000qug7,ak025bg4yqy0, A comma-separated list of event ids that are associated to an event.

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