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Minor earthquake 2.9 mag, 18 km SSW of Little Sitkin Island, Alaska



Earthquake location 51.79S, 178.43WA minor earthquake with magnitude 2.9 (ml/mb) was reported 18 km SSW of Little Sitkin Island, Alaska (11 miles) on Saturday. Date and time of earthquake in UTC/GMT: 20/09/15 / 2015-09-20 06:51:43 / September 20, 2015 @ 6:51 am. Exact location of earthquake, 178.43° East, 51.79° North, depth 110.3 km. All ids that are associated to the event: us10003ik5, ak11715837. Unique identifier: us10003ik5. The earthquake occurred at a depth of 110.3 km (69 miles). The 2.9-magnitude earthquake was detected at 21:51:43 / 9:51 pm (local time epicenter).

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

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 18 km SSW of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude 178.43° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.79° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 110.3 km Depth of the event in kilometers.
Place 18km SSW 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 2015-09-20 06:51:43 Time when the event occurred. UTC/GMT
Updated 2015-10-16 08:32:03 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 129 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 ,us,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 0.25 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 us10003ik5 Id of event.
Event Code 10003ik5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003ik5,ak11715837, A comma-separated list of event ids that are associated to an event.

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