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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.5 mag strikes near Adak in Alaska

Posted by admin on April 11, 2025 0 Comments

Earthquake location 51.1475S, -176.134WA minor earthquake with magnitude 3.5 (ml/mb) was detected on Friday, 87 km SSE of Adak, Alaska (54 miles). Exact time and date of earthquake 21/03/25 / 2025-03-21 17:00:24 / March 21, 2025 @ 5:00 pm UTC/GMT. The epicenter of the earthquake was roughly 50.836 km (32 miles) below the earth’s surface. The 3.5-magnitude earthquake has occurred at 17:00:24 / 5:00 pm (local time epicenter). Exact location of event, longitude -176.134 West, latitude 51.1475 North, depth = 50.836 km. Event ids that are associated to the earthquake: ak0253ol46co, us7000pmaw. Id of event: us7000pmaw.

There are an estimated 130,000 minor earthquakes in the world each year. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been ninety-eight, in the last 10 days one hundred and fourty-two, in the past 30 days one hundred and fourty-seven and in the last 365 days four hundred and sixty-nine earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 87 km SSE of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -176.134° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1475° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.836 km Depth of the event in kilometers.
Place 87 km SSE 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 2025-03-21 17:00:24 Time when the event occurred. UTC/GMT
Updated 2025-04-11 15:49:35 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 188 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 51 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.735 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 217 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 us7000pmaw Id of event.
Event Code 7000pmaw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0253ol46co,us7000pmaw, A comma-separated list of event ids that are associated to an event.

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