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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.8 quake has struck near Amukta Island in Alaska

Earthquake location 50.8448S, -170.9696WA minor earthquake magnitude 3.8 (ml/mb) has struck on Wednesday, 183 km S of Amukta Island, Alaska (114 miles). Exact location of event, depth 14.67 km, -170.9696° West, 50.8448° North. The earthquake was roughly at a depth of 14.67 km (9 miles). Exact time and date of event in UTC/GMT: 28/02/18 / 2018-02-28 21:07:14 / February 28, 2018 @ 9:07 pm. The 3.8-magnitude earthquake was detected at 10:07:14 / 10:07 am (local time epicenter). Id of earthquake: us1000d15b. Event ids that are associated: ak18616454, us1000d15b.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days eleven and in the last 365 days thirty-two earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 183 km S of Amukta Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.8 mb The magnitude for the event.
Longitude -170.9696° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 50.8448° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.67 km Depth of the event in kilometers.
Place 183km S of Amukta 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 2018-02-28 21:07:14 Time when the event occurred. UTC/GMT
Updated 2018-03-15 00:54:39 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 222 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 2.09 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 231 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000d15b Id of event.
Event Code 1000d15b An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18616454,us1000d15b, A comma-separated list of event ids that are associated to an event.

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