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Light earthquake, 4 mag has occurred near Adak in Alaska

Posted by admin on March 21, 2025 0 Comments

Earthquake location 51.4033S, -176.0965WA light earthquake magnitude 4 (ml/mb) strikes 64 km SE of Adak, Alaska (40 miles) on Friday. The temblor was picked up at 09:57:16 / 9:57 am (local time epicenter). Exact location of event, longitude -176.0965 West, latitude 51.4033 North, depth = 46.519 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 46.519 km (29 miles) below the earth’s surface. Event ids that are associated to the earthquake: us7000plkc, ak0253ogows3. Id of event: us7000plkc. Exact time and date of event in UTC/GMT: 21/03/25 / 2025-03-21 09:57:16 / March 21, 2025 @ 9:57 am.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been ten, in the last 10 days twenty-four, in the past 30 days twenty-nine and in the last 365 days three hundred and three earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 64 km SE of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -176.0965° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4033° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46.519 km Depth of the event in kilometers.
Place 64 km SE 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 09:57:16 Time when the event occurred. UTC/GMT
Updated 2025-03-21 10:29:25 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 2.374 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 246 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,ak, A comma-separated list of network contributors.
Number of Stations Used 48 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.692 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.32 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 191 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 us7000plkc Id of event.
Event Code 7000plkc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000plkc,ak0253ogows3, A comma-separated list of event ids that are associated to an event.

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