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Minor earthquake: M3.1 quake has struck near Little Sitkin Island in Alaska

Earthquake location 52.5902S, 178.7974WA minor earthquake with magnitude 3.1 (ml/mb) was reported 74 km NNE of Little Sitkin Island, Alaska (46 miles) on Sunday. The 3.1-magnitude earthquake was detected at 02:08:35 / 2:08 am (local time epicenter). Event ids that are associated to the earthquake: ak13425416. Id of event: ak13425416. Exact location, longitude 178.7974° East, latitude 52.5902° North, depth = 136.7 km. The epicenter was at a depth of 136.7 km (85 miles). Date and time of earthquake in UTC/GMT: 02/04/16 / 2016-04-02 14:08:35 / April 2, 2016 @ 2:08 pm.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days ten and in the last 365 days eighty-three earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 130,000 minor quakes in the world.

Did you feel it?

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. 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: 74 km NNE of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude 178.7974° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.5902° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 136.7 km Depth of the event in kilometers.
Place 74km NNE of Little Sitkin Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-04-02 14:08:35 Time when the event occurred. UTC/GMT
Updated 2016-04-11 21:17:12 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 148 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 0.54 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 ak13425416 Id of event.
Event Code 13425416 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13425416, A comma-separated list of event ids that are associated to an event.

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