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Minor earthquake, 2.8 mag was detected near Adak in Alaska


Earthquake location 51.4765S, -177.2811WA minor earthquake magnitude 2.8 (ml/mb) strikes 62 km SW of Adak, Alaska (39 miles) on Saturday. Date and time of earthquake in UTC/GMT: 17/12/17 / 2017-12-17 08:29:15 / December 17, 2017 @ 8:29 am. The temblor was picked up at 20:29:15 / 8:29 pm (local time epicenter). Event ids that are associated to the earthquake: ak17605504. Id of event: ak17605504. Exact location of earthquake, -177.2811° West, 51.4765° North, depth 55 km. The earthquake occurred at a depth of 55 km (34 miles).

In the past 24 hours, there have been three, in the last 10 days seven, in the past 30 days twenty and in the last 365 days eight hundred and three earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 1,300,000 minor quakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

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. 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: 62 km SW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -177.2811° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4765° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 55 km Depth of the event in kilometers.
Place 62km SW 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 2017-12-17 08:29:15 Time when the event occurred. UTC/GMT
Updated 2017-12-21 22:14:12 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 0.18 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 ak17605504 Id of event.
Event Code 17605504 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak17605504, A comma-separated list of event ids that are associated to an event.

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