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Minor earthquake, 2.8 mag has occurred near Semisopochnoi Island in Alaska



Earthquake location 51.1099S, 179.3428WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Tuesday, 95 km S of Semisopochnoi Island, Alaska (59 miles). Exact time and date of event in UTC/GMT: 24/07/17 / 2017-07-24 23:12:36 / July 24, 2017 @ 11:12 pm. Event ids that are associated to the earthquake: ak16375524. Id of event: ak16375524. Exact location of event, longitude 179.3428 East, latitude 51.1099 North, depth = 20.6 km. The 2.8-magnitude earthquake has occurred at 11:12:36 / 11:12 am (local time epicenter). The earthquake was roughly at a depth of 20.6 km (13 miles).

In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days twelve and in the last 365 days one hundred and fifty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor earthquakes in the world each year.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 95 km S of Semisopochnoi Island, Alaska. This data 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 179.3428° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1099° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.6 km Depth of the event in kilometers.
Place 95km 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 2017-07-24 23:12:36 Time when the event occurred. UTC/GMT
Updated 2017-08-14 23:53:58 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 0.24 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 ak16375524 Id of event.
Event Code 16375524 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16375524, A comma-separated list of event ids that are associated to an event.

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