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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.9 mag strikes near Semisopochnoi Island in Alaska


Earthquake location 52.105S, -179.669WA minor earthquake with magnitude 3.9 (ml/mb) was reported 52 km ENE of Semisopochnoi Island, Alaska (32 miles) on Thursday. Unique identifier: us1000j9lc. Ids that are associated to the event: ak01922pzxaq, us1000j9lc. The epicenter was at a depth of 153.77 km (96 miles). Global time and date of event 14/02/19 / 2019-02-14 18:16:27 / February 14, 2019 @ 6:16 pm UTC/GMT. The 3.9-magnitude earthquake was detected at 06:16:27 / 6:16 am (local time epicenter). Exact location of event, depth 153.77 km, -179.669° West, 52.105° North.

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days six, in the past 30 days seven and in the last 365 days fifty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 52 km ENE of Semisopochnoi Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude -179.669° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.105° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 153.77 km Depth of the event in kilometers.
Place 52km ENE 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 2019-02-14 18:16:27 Time when the event occurred. UTC/GMT
Updated 2019-03-14 18:14:19 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 234 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 0.606 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 263 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 us1000j9lc Id of event.
Event Code 1000j9lc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak01922pzxaq,us1000j9lc, A comma-separated list of event ids that are associated to an event.

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