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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Atka in Alaska

Posted by admin on June 15, 2018 0 Comments

Earthquake location 52.1709S, -173.7628WA light earthquake magnitude 4.1 (ml/mb) strikes 30 km E of Atka, Alaska (19 miles) on Monday. The earthquake was roughly at a depth of 189.91 km (118 miles). The temblor was reported at 01:50:00 / 1:50 am (local time epicenter). Exact location of event, longitude -173.7628 West, latitude 52.1709 North, depth = 189.91 km. Exact time and date of event in UTC/GMT: 21/05/18 / 2018-05-21 11:50:00 / May 21, 2018 @ 11:50 am. 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: ak19641534, us1000ebwb. Unique identifier: us1000ebwb.

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

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city 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: 30 km E of Atka, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -173.7628° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.1709° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 189.91 km Depth of the event in kilometers.
Place 30km E 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 2018-05-21 11:50:00 Time when the event occurred. UTC/GMT
Updated 2018-06-15 07:11:36 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 ,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 0.231 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.14 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 188 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 us1000ebwb Id of event.
Event Code 1000ebwb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak19641534,us1000ebwb, A comma-separated list of event ids that are associated to an event.

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