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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Atka in Alaska

Posted by admin on August 30, 2018 0 Comments

Earthquake location 51.3239S, -173.939WA light earthquake magnitude 4.2 (ml/mb) has occurred on Tuesday, 98 km S of Atka, Alaska (61 miles). The earthquake occurred at a depth of 51.07 km (32 miles) below the earth’s surface. Exact location of event, longitude -173.939 West, latitude 51.3239 North, depth = 51.07 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.2-magnitude earthquake has occurred at 07:37:34 / 7:37 am (local time epicenter). Unique identifier: us1000gj51. Ids that are associated to the event: ak20237211, us1000gj51. Global date and time of event UTC/GMT: 28/08/18 / 2018-08-28 19:37:34 / August 28, 2018 @ 7:37 pm.

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

Did you feel the quake?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 98 km S of Atka, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -173.939° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.3239° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 51.07 km Depth of the event in kilometers.
Place 98km S of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-28 19:37:34 Time when the event occurred. UTC/GMT
Updated 2018-08-30 21:59:49 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 0.956 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 199 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 us1000gj51 Id of event.
Event Code 1000gj51 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20237211,us1000gj51, A comma-separated list of event ids that are associated to an event.

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