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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag has occurred near Little Sitkin Island in Alaska



Earthquake location 51.2738S, 178.7012WA light earthquake with magnitude 4.2 (ml/mb) was reported 76 km S of Little Sitkin Island, Alaska (47 miles) on Friday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: ak15822484, us10008lb4. Unique identifier: us10008lb4. Exact location of earthquake, longitude 178.7012 East, latitude 51.2738 North, depth = 53.57 km. The epicenter was at a depth of 53.57 km (33 miles). Global date and time of event UTC/GMT: 27/04/17 / 2017-04-27 15:58:51 / April 27, 2017 @ 3:58 pm. The 4.2-magnitude earthquake was detected at 03:58:51 / 3:58 am (local time epicenter).

In the past 24 hours, there have been five, in the last 10 days six, in the past 30 days eight and in the last 365 days one hundred and fourty-four earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 76 km S of Little Sitkin Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 178.7012° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.2738° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 53.57 km Depth of the event in kilometers.
Place 76km 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 15:58:51 Time when the event occurred. UTC/GMT
Updated 2017-04-27 18:57:25 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 271 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 2.651 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.94 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 190 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 us10008lb4 Id of event.
Event Code 10008lb4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak15822484,us10008lb4, A comma-separated list of event ids that are associated to an event.

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