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Minor earthquake: M2.8 quake has struck near Adak in Alaska



Earthquake location 52.2204S, -175.8237WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Saturday, 68 km NE of Adak, Alaska (42 miles). The earthquake occurred at a depth of 233.6 km (145 miles). Event ids that are associated to the earthquake: ak13999350. Id of event: ak13999350. Exact location of event, depth 233.6 km, -175.8237° West, 52.2204° North. The temblor was reported at 21:08:24 / 9:08 pm (local time epicenter). Global date and time of event UTC/GMT: 18/09/16 / 2016-09-18 06:08:24 / September 18, 2016 @ 6:08 am.

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

How would you describe the shaking?

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: 68 km NE 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 -175.8237° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.2204° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 233.6 km Depth of the event in kilometers.
Place 68km NE 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 2016-09-18 06:08:24 Time when the event occurred. UTC/GMT
Updated 2016-09-19 03:49:38 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 8 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1922395 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.17 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 323.99997408 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 ak13999350 Id of event.
Event Code 13999350 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13999350, A comma-separated list of event ids that are associated to an event.

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