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Light earthquake, 4 mag has occurred near Amukta Island in Alaska

Posted by admin on August 25, 2018 0 Comments

Earthquake location 51.9712S, -170.8927WA light earthquake magnitude 4 (ml/mb) strikes 62 km SSE of Amukta Island, Alaska (39 miles) on Saturday. Exact time and date of earthquake 25/08/18 / 2018-08-25 17:25:31 / August 25, 2018 @ 5:25 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 30.51 km (19 miles) below the earth’s surface. Exact location, longitude -170.8927° West, latitude 51.9712° North, depth = 30.51 km. Event id: us1000ghac. Ids that are associated to the earthquake: ak20200715, us1000ghac. The temblor was reported at 06:25:31 / 6:25 am (local time epicenter).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days nine and in the last 365 days one hundred and seventy-five earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 62 km SSE of Amukta Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -170.8927° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9712° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.51 km Depth of the event in kilometers.
Place 62km SSE 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 2018-08-25 17:25:31 Time when the event occurred. UTC/GMT
Updated 2018-08-25 18:06:49 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 246 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 1.05 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 175 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 us1000ghac Id of event.
Event Code 1000ghac An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20200715,us1000ghac, A comma-separated list of event ids that are associated to an event.

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