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Minor earthquake 3.3 mag, 107 km SSW of Semisopochnoi Island, Alaska

Earthquake location 51.0068S, 179.2871WA minor earthquake magnitude 3.3 (ml/mb) strikes 107 km SSW of Semisopochnoi Island, Alaska (66 miles) on Wednesday. Exact location of earthquake, longitude 179.2871 East, latitude 51.0068 North, depth = 11.5 km. The earthquake occurred at a depth of 11.5 km (7 miles) below the earth’s surface. Global date and time of event UTC/GMT: 13/10/15 / 2015-10-13 16:50:27 / October 13, 2015 @ 4:50 pm. Unique identifier: ak11738699. Ids that are associated to the event: ak11738699. The temblor was reported at 04:50:27 / 4:50 am (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 three, in the last 10 days six, in the past 30 days eight and in the last 365 days one hundred and twenty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 130,000 minor quakes in the world each year.

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: 107 km SSW of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude 179.2871° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0068° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11.5 km Depth of the event in kilometers.
Place 107km SSW of Semisopochnoi 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 2015-10-13 16:50:27 Time when the event occurred. UTC/GMT
Updated 2015-10-19 10:17:57 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 168 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 0.45 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 ak11738699 Id of event.
Event Code 11738699 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11738699, A comma-separated list of event ids that are associated to an event.

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