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Minor earthquake 2.8 mag, 63 km SSW of Adak, Alaska

Earthquake location 51.397S, -177.1476WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Tuesday, 63 km SSW of Adak, Alaska (39 miles). The 2.8-magnitude earthquake has occurred at 15:52:01 / 3:52 pm (local time epicenter). Exact location of event, depth 40.4 km, -177.1476° West, 51.397° North. The earthquake occurred at a depth of 40.4 km (25 miles) below the earth’s surface. Unique identifier: ak20285275. Ids that are associated to the event: ak20285275. Global time and date of event 17/10/18 / 2018-10-17 03:52:01 / October 17, 2018 @ 3:52 am UTC/GMT.

Each year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been 0, in the last 10 days one, in the past 30 days six and in the last 365 days two hundred earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 63 km SSW of Adak, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -177.1476° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.397° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 40.4 km Depth of the event in kilometers.
Place 63km 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 2018-10-17 03:52:01 Time when the event occurred. UTC/GMT
Updated 2018-10-17 16:02:44 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 121 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 0.32 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 ak20285275 Id of event.
Event Code 20285275 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20285275, A comma-separated list of event ids that are associated to an event.

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