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Moderate earthquake, 5.4 mag has occurred near Atka in Alaska

Earthquake location 53.2178S, -173.4452WA moderate earthquake with magnitude 5.4 (ml/mb) was reported 124 km NNE of Atka, Alaska (77 miles) on Wednesday. All ids that are associated to the event: at00qiw92t, us7000c6l2. Unique identifier: us7000c6l2. The earthquake occurred at a depth of 234.01 km (145 miles). Exact location of earthquake, longitude -173.4452 West, latitude 53.2178 North, depth = 234.01 km. The temblor was reported at 04:13:42 / 4:13 am (local time epicenter). A tsunami warning has been issued near Atka in Alaska (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 28/10/20 / 2020-10-28 04:13:42 / October 28, 2020 @ 4:13 am.

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

Did you feel anything?

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. 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: 124 km NNE of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 5.4 mb The magnitude for the event.
Longitude -173.4452° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.2178° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 234.01 km Depth of the event in kilometers.
Place 124 km NNE of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-10-28 04:13:42 Time when the event occurred. UTC/GMT
Updated 2020-10-28 04:30:25 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 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 449 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, 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 1.116 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 51 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 us7000c6l2 Id of event.
Event Code 7000c6l2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00qiw92t,us7000c6l2, A comma-separated list of event ids that are associated to an event.

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