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Light earthquake: M4.5 quake has struck near Adak in Alaska

Posted by admin on September 13, 2025 0 Comments

Earthquake location 51.5071S, 179.651WA light earthquake with magnitude 4.5 (ml/mb) was detected on Saturday, 260 km W of Adak, Alaska (162 miles). Exact location of earthquake, longitude 179.651 East, latitude 51.5071 North, depth = 72.681 km. The epicenter of the earthquake was roughly 72.681 km (45 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 13/09/25 / 2025-09-13 01:58:56 / September 13, 2025 @ 1:58 am. The 4.5-magnitude earthquake has occurred at 01:58:56 / 1:58 am (local time epicenter). Id of earthquake: us7000qvw4. Event ids that are associated: ak025breitw1, us7000qvw4. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Every year there are an estimated 13,000 light earthquakes in the world. 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 two, in the past 30 days eight and in the last 365 days one hundred and seven earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 260 km W of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 179.651° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.5071° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 72.681 km Depth of the event in kilometers.
Place 260 km W of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-13 01:58:56 Time when the event occurred. UTC/GMT
Updated 2025-09-13 02:15:33 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 2.416 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 312 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 ,ak,us, A comma-separated list of network contributors.
Number of Stations Used 69 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.254 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us7000qvw4 Id of event.
Event Code 7000qvw4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak025breitw1,us7000qvw4, A comma-separated list of event ids that are associated to an event.

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