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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.9 quake has struck near Little Sitkin Island in Alaska


Earthquake location 51.0703S, 178.6279WA minor earthquake magnitude 3.9 (ml/mb) has occurred on Friday, 98 km S of Little Sitkin Island, Alaska (61 miles). The temblor was picked up at 04:09:01 / 4:09 am (local time epicenter). All ids that are associated to the event: us10008nu2. Unique identifier: us10008nu2. Exact location of earthquake, longitude 178.6279 East, latitude 51.0703 North, depth = 52.48 km. The earthquake occurred at a depth of 52.48 km (33 miles). Exact time and date of earthquake 27/04/17 / 2017-04-27 16:09:01 / April 27, 2017 @ 4:09 pm UTC/GMT.

There are an estimated 130,000 minor quakes in the world each year. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been twenty-three, in the last 10 days twenty-five, in the past 30 days twenty-eight and in the last 365 days one hundred and fifty-eight earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

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. 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: 98 km S of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude 178.6279° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0703° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 52.48 km Depth of the event in kilometers.
Place 98km 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 2017-04-27 16:09:01 Time when the event occurred. UTC/GMT
Updated 2017-05-18 18:46:44 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 234 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, 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 2.752 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 210 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10008nu2 Id of event.
Event Code 10008nu2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008nu2, A comma-separated list of event ids that are associated to an event.

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