Minor earthquake, 3.6 mag strikes near Adak in Alaska

A minor earthquake magnitude 3.6 (ml/mb) has occurred on Sunday, 226 km WSW of Adak, Alaska (140 miles). Exact location of earthquake, longitude -179.4617 West, latitude 50.8659 North, depth = 35.93 km. The earthquake occurred at a depth of 35.93 km (22 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 21/02/21 / 2021-02-21 23:05:35 / February 21, 2021 @ 11:05 pm. Event id: us7000ddn9. Ids that are associated to the earthquake: us7000ddn9. The 3.6-magnitude earthquake was detected at 23:05:35 / 11:05 pm (local time epicenter).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been four, in the last 10 days twenty-two, in the past 30 days twenty-two and in the last 365 days one hundred and sixty-four earthquakes of magnitude 3.0 or greater that was reported nearby.

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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: 226 km WSW of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	3.6 mb	The magnitude for the event.
Longitude	-179.4617° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.8659° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35.93 km	Depth of the event in kilometers.
Place	226 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	2021-02-21 23:05:35	Time when the event occurred. UTC/GMT
Updated	2021-02-26 06:08:23	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	199	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	1.039	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.43 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	321	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	us7000ddn9	Id of event.
Event Code	7000ddn9	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000ddn9,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.6 mag strikes near Adak in Alaska

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