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Light earthquake: M4.2 quake has struck near Amukta Island in Alaska

Posted by admin on October 6, 2018 0 Comments

Earthquake location 51.9164S, -171.502WA light earthquake magnitude 4.2 (ml/mb) has struck on Saturday, 65 km SSW of Amukta Island, Alaska (40 miles). The 4.2-magnitude earthquake was detected at 17:34:10 / 5:34 pm (local time epicenter). 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: us1000h7jl. Unique identifier: us1000h7jl. Global date and time of event UTC/GMT: 30/09/18 / 2018-09-30 04:34:10 / September 30, 2018 @ 4:34 am. Exact location, longitude -171.502° West, latitude 51.9164° North, depth = 57.01 km. The epicenter was at a depth of 57.01 km (35 miles).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days one hundred and twenty-eight 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.

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. 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: 65 km SSW of Amukta Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -171.502° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9164° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 57.01 km Depth of the event in kilometers.
Place 65km SSW of Amukta 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 2018-09-30 04:34:10 Time when the event occurred. UTC/GMT
Updated 2018-10-06 01:32:09 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 ,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 1.934 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.29 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 115 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 us1000h7jl Id of event.
Event Code 1000h7jl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000h7jl, A comma-separated list of event ids that are associated to an event.

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