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Strong earthquake, 6.3 mag strikes near Adak in Alaska


Earthquake location 51.0137S, -177.3246WA earthquake magnitude 6.3 (ml/mb) has occurred on Sunday, 107 km SSW of Adak, Alaska (66 miles). Exact location of earthquake, longitude -177.3246 West, latitude 51.0137 North, depth = 47.921 km. The temblor was picked up at 19:57:11 / 7:57 pm (local time epicenter). Global date and time of event UTC/GMT: 08/12/24 / 2024-12-08 19:57:11 / December 8, 2024 @ 7:57 pm. The epicenter of the earthquake was roughly 47.921 km (30 miles) below the earth’s surface. Unique identifier: us7000nx3z. Ids that are associated to the event: ak024frkzigd, us7000nx3z, at00so6y39, pt24343001. A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist).

There are an estimated 135 earthquakes in the world each year. Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days eight and in the last 365 days ninety-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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: 107 km SSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 6.3 mb The magnitude for the event.
Longitude -177.3246° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0137° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 47.921 km Depth of the event in kilometers.
Place 107 km SSW 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 2024-12-08 19:57:11 Time when the event occurred. UTC/GMT
Updated 2024-12-08 20:13:07 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 3.1 The maximum reported intensity for the event.
MMI 3.386 The maximum estimated instrumental intensity for the event.
Alert Level green 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 611 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,at,pt, A comma-separated list of network contributors.
Number of Stations Used 73 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.751 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 89 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000nx3z Id of event.
Event Code 7000nx3z An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak024frkzigd,us7000nx3z,at00so6y39,pt24343001, A comma-separated list of event ids that are associated to an event.

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