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Minor earthquake, 2.8 mag was detected near Adak in Alaska

Earthquake location 51.7078S, -176.4824WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Wednesday, 22 km SSE of Adak, Alaska (14 miles). Exact location of event, depth 52.86 km, -176.4824° West, 51.7078° North. The 2.8-magnitude earthquake was detected at 16:00:12 / 4:00 pm (local time epicenter). The earthquake was roughly at a depth of 52.86 km (33 miles). Global time and date of event 21/04/16 / 2016-04-21 01:00:12 / April 21, 2016 @ 1:00 am UTC/GMT. Event id: us10005c05. Ids that are associated to the earthquake: ak13488881, us10005c05.

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 22 km SSE of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -176.4824° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7078° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.86 km Depth of the event in kilometers.
Place 22km SSE 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 2016-04-21 01:00:12 Time when the event occurred. UTC/GMT
Updated 2016-05-20 03:56:29 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,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 0.215 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.25 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 204 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 us10005c05 Id of event.
Event Code 10005c05 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13488881,us10005c05, A comma-separated list of event ids that are associated to an event.

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