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Minor earthquake 2.8 mag, 36 km S of Semisopochnoi Island, Alaska

Earthquake location 51.6246S, 179.5284WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Friday, 36 km S of Semisopochnoi Island, Alaska (22 miles). Event id: ak0204x8vbmk. Ids that are associated to the earthquake: ak0204x8vbmk. Global time and date of event 16/04/20 / 2020-04-16 17:41:14 / April 16, 2020 @ 5:41 pm UTC/GMT. The temblor was detected at 05:41:14 / 5:41 am (local time epicenter). Exact location of earthquake, 179.5284° East, 51.6246° North, depth 79.4 km. The earthquake occurred at a depth of 79.4 km (49 miles) below the earth’s surface.

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been nine, in the last 10 days ten, in the past 30 days thirteen and in the last 365 days ninety-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 1,300,000 minor earthquakes in the world.

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 36 km S of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude 179.5284° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.6246° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 79.4 km Depth of the event in kilometers.
Place 36km S 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 2020-04-16 17:41:14 Time when the event occurred. UTC/GMT
Updated 2020-05-07 03:33:24 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 121 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 0.54 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 ak0204x8vbmk Id of event.
Event Code 0204x8vbmk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak0204x8vbmk, A comma-separated list of event ids that are associated to an event.

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