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Minor earthquake, 3 mag was detected near Semisopochnoi Island in Alaska


Earthquake location 51.0975S, 179.1032WA minor earthquake magnitude 3 (ml/mb) has occurred on Sunday, 101 km SSW of Semisopochnoi Island, Alaska (63 miles). Exact location of earthquake, 179.1032° East, 51.0975° North, depth 21.8 km. The epicenter was at a depth of 21.8 km (14 miles). Unique identifier: us70005v5m. Ids that are associated to the event: ak019c4zlheg, us70005v5m. Global time and date of event 21/09/19 / 2019-09-21 23:04:15 / September 21, 2019 @ 11:04 pm UTC/GMT. The 3-magnitude earthquake has occurred at 11:04:15 / 11:04 am (local time epicenter).

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been eight, in the last 10 days nine, in the past 30 days sixteen and in the last 365 days seventy-eight earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel anything?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 101 km SSW of Semisopochnoi Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3 mb The magnitude for the event.
Longitude 179.1032° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0975° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 21.8 km Depth of the event in kilometers.
Place 101km SSW of Semisopochnoi Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-09-21 23:04:15 Time when the event occurred. UTC/GMT
Updated 2019-10-19 05:15:47 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 138 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 0.306 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.48 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 228 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 us70005v5m Id of event.
Event Code 70005v5m An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019c4zlheg,us70005v5m, A comma-separated list of event ids that are associated to an event.

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