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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.1 quake has struck near Shemya Island in Alaska

Posted by admin on April 19, 2017 0 Comments

Earthquake location 52.3103S, 173.8298WA light earthquake magnitude 4.1 (ml/mb) has struck on Saturday, 50 km SSW of Shemya Island, Alaska (31 miles). Exact time and date of earthquake 02/04/17 / 2017-04-02 01:31:19 / April 2, 2017 @ 1:31 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 42.71 km (27 miles). Exact location of event, longitude 173.8298 East, latitude 52.3103 North, depth = 42.71 km. The 4.1-magnitude earthquake was detected at 15:31:19 / 3:31 pm (local time epicenter). Event ids that are associated to the earthquake: us10008fhk. Id of event: us10008fhk.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days seventeen earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

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. 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: 50 km SSW of Shemya Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 173.8298° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.3103° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.71 km Depth of the event in kilometers.
Place 50km SSW of Shemya 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 2017-04-02 01:31:19 Time when the event occurred. UTC/GMT
Updated 2017-04-19 00:02:15 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 259 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 0.451 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 165 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 us10008fhk Id of event.
Event Code 10008fhk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008fhk, A comma-separated list of event ids that are associated to an event.

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