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Minor earthquake, 2.8 mag strikes near Semisopochnoi Island in Alaska

Earthquake location 51.4402S, 179.2379WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Monday, 62 km SSW of Semisopochnoi Island, Alaska (39 miles). Exact location of earthquake, 179.2379° East, 51.4402° North, depth 63.28 km. All ids that are associated to the event: ak020yvv5jc, us70007p4c. Unique identifier: us70007p4c. The earthquake occurred at a depth of 63.28 km (39 miles). Global date and time of event UTC/GMT: 21/01/20 / 2020-01-21 09:37:15 / January 21, 2020 @ 9:37 am. The 2.8-magnitude earthquake was detected at 23:37:15 / 11:37 pm (local time epicenter).

In the past 24 hours, there have been fifteen, in the last 10 days seventeen, in the past 30 days twenty-three and in the last 365 days one hundred and nineteen earthquakes of magnitude 3.0 or greater that has struck near. Each year there are an estimated 1,300,000 minor quakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 62 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 2.8 mb The magnitude for the event.
Longitude 179.2379° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4402° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 63.28 km Depth of the event in kilometers.
Place 62km 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 2020-01-21 09:37:15 Time when the event occurred. UTC/GMT
Updated 2020-02-14 13:57:08 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 121 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 0.074 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.39 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us70007p4c Id of event.
Event Code 70007p4c An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak020yvv5jc,us70007p4c, A comma-separated list of event ids that are associated to an event.

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