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Light earthquake: M4 quake has struck near Adak in Alaska

Posted by admin on January 21, 2021 0 Comments

Earthquake location 51.1951S, -179.7852WA light earthquake magnitude 4 (ml/mb) strikes 231 km WSW of Adak, Alaska (144 miles) on Sunday. Exact location of earthquake, longitude -179.7852 West, latitude 51.1951 North, depth = 35 km. The earthquake was roughly at a depth of 35 km (22 miles). Date and time of earthquake in UTC/GMT: 03/01/21 / 2021-01-03 22:51:26 / January 3, 2021 @ 10:51 pm. All ids that are associated to the event: us6000d816. Unique identifier: us6000d816. The temblor was picked up at 22:51:26 / 10:51 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

In the past 24 hours, there have been nine, in the last 10 days twelve, in the past 30 days twenty and in the last 365 days two hundred and thirty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 231 km WSW of Adak, Alaska. This data 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 -179.7852° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1951° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 231 km WSW 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 2021-01-03 22:51:26 Time when the event occurred. UTC/GMT
Updated 2021-01-21 00:19:18 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 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 ,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 2.055 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 224 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 us6000d816 Id of event.
Event Code 6000d816 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d816, A comma-separated list of event ids that are associated to an event.

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