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Minor earthquake, 3.3 mag was detected near Little Sitkin Island in Alaska



Earthquake location 51.1698S, 178.7462WA minor earthquake magnitude 3.3 (ml/mb) has struck on Friday, 88 km S of Little Sitkin Island, Alaska (55 miles). The epicenter of the earthquake was roughly 15.81 km (10 miles) below the earth’s surface. The temblor was detected at 10:39:20 / 10:39 am (local time epicenter). Event id: us2000ac0i. Ids that are associated to the earthquake: ak16493546, us2000ac0i. Global date and time of event UTC/GMT: 10/08/17 / 2017-08-10 22:39:20 / August 10, 2017 @ 10:39 pm. Exact location of event, longitude 178.7462 East, latitude 51.1698 North, depth = 15.81 km.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been ten, in the last 10 days fourteen, in the past 30 days nineteen and in the last 365 days one hundred and sixty-nine earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 88 km S of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude 178.7462° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1698° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 15.81 km Depth of the event in kilometers.
Place 88km S 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 2017-08-10 22:39:20 Time when the event occurred. UTC/GMT
Updated 2017-09-07 23:51:27 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 168 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 0.405 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 225 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 us2000ac0i Id of event.
Event Code 2000ac0i An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16493546,us2000ac0i, A comma-separated list of event ids that are associated to an event.

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