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Moderate earthquake, 5.2 mag has occurred near Attu Station in Alaska


Earthquake location 52.638S, 170.468WA moderate earthquake magnitude 5.2 (ml/mb) has struck on Wednesday, 185 km W of Attu Station, Alaska (115 miles). The epicenter of the earthquake was roughly 69 km (43 miles) below the earth’s surface. A tsunami warning has been issued near Attu Station in Alaska (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 09/12/20 / 2020-12-09 06:47:07 / December 9, 2020 @ 6:47 am. Event ids that are associated to the earthquake: at00ql286j. Id of event: at00ql286j. The 5.2-magnitude earthquake has occurred at 06:47:07 / 6:47 am (local time epicenter). Exact location, longitude 170.468° East, latitude 52.638° North, depth = 69 km.

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 1320 moderate earthquakes in the world. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Did you feel it?

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. 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: 185 km W of Attu Station, Alaska.

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More information

Parameter Value Description
Magnitude 5.2 mb The magnitude for the event.
Longitude 170.468° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.638° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 69 km Depth of the event in kilometers.
Place 185 km W of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-09 06:47:07 Time when the event occurred. UTC/GMT
Updated 2020-12-09 06:54:50 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 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 416 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 41 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.212551 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 187.199985024 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00ql286j Id of event.
Event Code 00ql286j An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00ql286j, A comma-separated list of event ids that are associated to an event.

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