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Light earthquake: M4.2 quake has struck near Attu Station in Alaska

Posted by admin on August 17, 2025 0 Comments

Earthquake location 52.1051S, 172.7061WA light earthquake magnitude 4.2 (ml/mb) has occurred on Sunday, 88 km SSW of Attu Station, Alaska (55 miles). Global date and time of event UTC/GMT: 17/08/25 / 2025-08-17 11:58:48 / August 17, 2025 @ 11:58 am. Exact location of event, depth 10 km, 172.7061° East, 52.1051° North. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Unique identifier: us6000r1q5. Ids that are associated to the event: us6000r1q5. The temblor was detected at 11:58:48 / 11:58 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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. 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: 88 km SSW of Attu Station, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 172.7061° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.1051° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 88 km SSW of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-17 11:58:48 Time when the event occurred. UTC/GMT
Updated 2025-08-17 12:23:04 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 51 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.058 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.63 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 204 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 us6000r1q5 Id of event.
Event Code 6000r1q5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000r1q5, A comma-separated list of event ids that are associated to an event.

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