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Minor earthquake, 3.3 mag strikes near Adak in Alaska

Earthquake location 50.9114S, -176.8115WA minor earthquake with magnitude 3.3 (ml/mb) was reported 107 km S of Adak, Alaska (66 miles) on Thursday. The earthquake occurred at a depth of 28.8 km (18 miles) below the earth’s surface. Exact location of earthquake, longitude -176.8115 West, latitude 50.9114 North, depth = 28.8 km. Id of earthquake: us7000cb60. Event ids that are associated: ak020dls3p77, us7000cb60. Exact time and date of earthquake 22/10/20 / 2020-10-22 15:16:19 / October 22, 2020 @ 3:16 pm UTC/GMT. The 3.3-magnitude earthquake was detected at 15:16:19 / 3:16 pm (local time epicenter).

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been seven, in the last 10 days thirteen, in the past 30 days twenty-four and in the last 365 days two hundred and seventeen earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 3.5 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: 107 km S of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -176.8115° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.9114° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 28.8 km Depth of the event in kilometers.
Place 107 km S 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 2020-10-22 15:16:19 Time when the event occurred. UTC/GMT
Updated 2020-11-17 22:17:11 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 us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,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 0.891 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 232 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 us7000cb60 Id of event.
Event Code 7000cb60 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak020dls3p77,us7000cb60, A comma-separated list of event ids that are associated to an event.

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