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Minor earthquake: M2.8 quake has struck near Semisopochnoi Island in Alaska



Earthquake location 51.0428S, 179.4479WA minor earthquake magnitude 2.8 (ml/mb) has struck on Thursday, 101 km S of Semisopochnoi Island, Alaska (63 miles). The epicenter of the earthquake was roughly 30.5 km (19 miles) below the earth’s surface. Global time and date of event 14/03/18 / 2018-03-14 20:24:50 / March 14, 2018 @ 8:24 pm UTC/GMT. Id of earthquake: us1000d7qi. Event ids that are associated: ak18696315, us1000d7qi. The 2.8-magnitude earthquake was detected at 08:24:50 / 8:24 am (local time epicenter). Exact location of event, depth 30.5 km, 179.4479° East, 51.0428° North.

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

Did you feel it?

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: 101 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 179.4479° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.0428° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.5 km Depth of the event in kilometers.
Place 101km 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 2018-03-14 20:24:50 Time when the event occurred. UTC/GMT
Updated 2018-04-10 20:19:16 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 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 0.347 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 257 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 us1000d7qi Id of event.
Event Code 1000d7qi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18696315,us1000d7qi, A comma-separated list of event ids that are associated to an event.

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