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Minor earthquake 3.3 mag, 183 km WSW of Adak, Alaska

Earthquake location 51.254S, -179.0845WA minor earthquake magnitude 3.3 (ml/mb) strikes 183 km WSW of Adak, Alaska (114 miles) on Monday. Exact location of event, depth 10 km, -179.0845° West, 51.254° North. The 3.3-magnitude earthquake was detected at 09:37:51 / 9:37 am (local time epicenter). Global time and date of event 15/02/21 / 2021-02-15 09:37:51 / February 15, 2021 @ 9:37 am UTC/GMT. The epicenter was at a depth of 10 km (6 miles). Event id: ak021248b1di. Ids that are associated to the earthquake: ak021248b1di.

In the past 24 hours, there have been twenty-eight, in the last 10 days thirty-one, in the past 30 days thirty-four and in the last 365 days two hundred and three earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 183 km WSW of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -179.0845° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.254° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 183 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 2021-02-15 09:37:51 Time when the event occurred. UTC/GMT
Updated 2021-03-03 06:32:34 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 168 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak021248b1di Id of event.
Event Code 021248b1di An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak021248b1di, A comma-separated list of event ids that are associated to an event.

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