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Light earthquake, 4.3 mag was detected near Adak in Alaska

Posted by admin on July 23, 2020 0 Comments

Earthquake location 52.3216S, -178.1185WA light earthquake magnitude 4.3 (ml/mb) has struck on Thursday, 113 km WNW of Adak, Alaska (70 miles). Global date and time of event UTC/GMT: 23/07/20 / 2020-07-23 22:08:40 / July 23, 2020 @ 10:08 pm. All ids that are associated to the event: us6000b31i. Unique identifier: us6000b31i. Exact location of event, longitude -178.1185 West, latitude 52.3216 North, depth = 234.85 km. The 4.3-magnitude earthquake has occurred at 22:08:40 / 10:08 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 234.85 km (146 miles) below the earth’s surface.

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

Questions or comments?

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: 113 km WNW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -178.1185° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.3216° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 234.85 km Depth of the event in kilometers.
Place 113 km WNW of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-07-23 22:08:40 Time when the event occurred. UTC/GMT
Updated 2020-07-23 22:27:17 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 284 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 0.759 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 113 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 us6000b31i Id of event.
Event Code 6000b31i An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000b31i, A comma-separated list of event ids that are associated to an event.

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