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Moderate earthquake, 5.2 mag strikes near Adak in Alaska


Earthquake location 51.1546S, -178.4009WA moderate earthquake magnitude 5.2 (ml/mb) has struck on Wednesday, 146 km SW of Adak, Alaska (91 miles). The epicenter was at a depth of 39.929 km (25 miles). Event id: us6000q6d9. Ids that are associated to the earthquake: at00suslb2, us6000q6d9. Exact time and date of event in UTC/GMT: 16/04/25 / 2025-04-16 03:49:49 / April 16, 2025 @ 3:49 am. Exact location of earthquake, longitude -178.4009 West, latitude 51.1546 North, depth = 39.929 km. The 5.2-magnitude earthquake was detected at 03:49:49 / 3:49 am (local time epicenter). A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist).

In the past 24 hours, there have been two, in the last 10 days five, in the past 30 days fourteen and in the last 365 days three hundred and thirty-three earthquakes of magnitude 3.0 or greater that has struck near. 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.

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 146 km SW of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.2 mb The magnitude for the event.
Longitude -178.4009° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1546° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 39.929 km Depth of the event in kilometers.
Place 146 km SW 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 2025-04-16 03:49:49 Time when the event occurred. UTC/GMT
Updated 2025-04-16 04:07:49 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 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 416 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, A comma-separated list of network contributors.
Number of Stations Used 111 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.476 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.03 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 126 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000q6d9 Id of event.
Event Code 6000q6d9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00suslb2,us6000q6d9, A comma-separated list of event ids that are associated to an event.

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