Light earthquake 4.3 mag, 137 km E of Atka, Alaska

A light earthquake magnitude 4.3 (ml/mb) has struck on Wednesday, 137 km E of Atka, Alaska (85 miles). The temblor was picked up at 23:37:46 / 11:37 pm (local time epicenter). Id of earthquake: us7000di00. Event ids that are associated: us7000di00. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 10/03/21 / 2021-03-10 23:37:46 / March 10, 2021 @ 11:37 pm. Exact location, longitude -172.1987° West, latitude 52.3179° North, depth = 76.56 km. The earthquake occurred at a depth of 76.56 km (48 miles).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days four and in the last 365 days one hundred and five 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.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 137 km E of Atka, Alaska.

Alaska Atka

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Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	-172.1987° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	52.3179° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	76.56 km	Depth of the event in kilometers.
Place	137 km 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	2021-03-10 23:37:46	Time when the event occurred. UTC/GMT
Updated	2021-03-11 00:20:06	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	1.234	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.7 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	176	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	us7000di00	Id of event.
Event Code	7000di00	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000di00,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.3 mag, 137 km E of Atka, Alaska

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