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Strong earthquake: M6.3 quake has struck near Adak in Alaska


Earthquake location 50.9023S, -177.1033WA earthquake with magnitude 6.3 (ml/mb) was reported 112 km SSW of Adak, Alaska (70 miles) on Monday. Exact time and date of event in UTC/GMT: 09/12/24 / 2024-12-09 00:15:29 / December 9, 2024 @ 12:15 am. A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 10 km (6 miles). The 6.3-magnitude earthquake was detected at 00:15:29 / 12:15 am (local time epicenter). Exact location of earthquake, longitude -177.1033 West, latitude 50.9023 North, depth = 10 km. Event id: us7000nx5r. Ids that are associated to the earthquake: at00so7a21, us7000nx5r, ak024fswynve.

Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. In the past 24 hours, there have been sixteen, in the last 10 days seventeen, in the past 30 days twenty-one and in the last 365 days one hundred and three earthquakes of magnitude 3.0 or greater that was reported nearby. Every year there are an estimated 135 earthquakes in the world.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 112 km SSW of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 6.3 mb The magnitude for the event.
Longitude -177.1033° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.9023° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 112 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 2024-12-09 00:15:29 Time when the event occurred. UTC/GMT
Updated 2024-12-09 00:39:39 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 4.435 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 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 ,at,us,ak, A comma-separated list of network contributors.
Number of Stations Used 114 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.953 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.22 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 40 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 us7000nx5r Id of event.
Event Code 7000nx5r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00so7a21,us7000nx5r,ak024fswynve, A comma-separated list of event ids that are associated to an event.

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