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

Posted by admin on March 21, 2025 0 Comments

Earthquake location 51.0819S, -175.9943WA light earthquake with magnitude 4.5 (ml/mb) was reported 98 km SSE of Adak, Alaska (61 miles) on Friday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 21/03/25 / 2025-03-21 15:03:22 / March 21, 2025 @ 3:03 pm UTC/GMT. The epicenter was at a depth of 14.8 km (9 miles). Event ids that are associated to the earthquake: ak0253ojxy8q. Id of event: ak0253ojxy8q. Exact location of earthquake, longitude -175.9943 West, latitude 51.0819 North, depth = 14.8 km. The temblor was picked up at 15:03:22 / 3:03 pm (local time epicenter).

Each year there are an estimated 13,000 light quakes 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 nineteen, in the last 10 days thirty-seven, in the past 30 days fourty-one and in the last 365 days three hundred and fourty-six earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 98 km SSE of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -175.9943° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0819° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.8 km Depth of the event in kilometers.
Place 98 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 15:03:22 Time when the event occurred. UTC/GMT
Updated 2025-03-21 15:15:56 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 312 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak0253ojxy8q Id of event.
Event Code 0253ojxy8q An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0253ojxy8q, A comma-separated list of event ids that are associated to an event.

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